{"id":1092,"date":"2025-08-05T00:04:55","date_gmt":"2025-08-04T16:04:55","guid":{"rendered":"http:\/\/www.cmd137blog.top\/?p=1092"},"modified":"2025-08-10T17:37:30","modified_gmt":"2025-08-10T09:37:30","slug":"%e8%bd%ae%e5%ad%90%e9%a1%b9%e7%9b%ae%ef%bc%9amini-spring-%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"http:\/\/www.cmd137blog.top\/?p=1092","title":{"rendered":"\u8f6e\u5b50\u9879\u76ee\uff1amini-spring \u7b14\u8bb0-\u5bb9\u5668\u7bc7\uff1a"},"content":{"rendered":"\n

\u5b66\u4e60xfg\u7684\u7248\u672c\uff1afuzhengwei\/small-spring: \ud83c\udf31\u300a Spring \u624b\u64b8\u4e13\u680f\u300b\uff0c\u672c\u4e13\u680f\u4ee5 Spring \u6e90\u7801\u5b66\u4e60\u4e3a\u76ee\u7684\uff0c\u901a\u8fc7\u624b\u5199\u7b80\u5316\u7248 Spring \u6846\u67b6\uff0c\u4e86\u89e3 Spring \u6838\u5fc3\u539f\u7406\u3002\u5728\u624b\u5199\u7684\u8fc7\u7a0b\u4e2d\u4f1a\u7b80\u5316 Spring \u6e90\u7801\uff0c\u6458\u53d6\u6574\u4f53\u6846\u67b6\u4e2d\u7684\u6838\u5fc3\u903b\u8f91\uff0c\u7b80\u5316\u4ee3\u7801\u5b9e\u73b0\u8fc7\u7a0b\uff0c\u4fdd\u7559\u6838\u5fc3\u529f\u80fd\uff0c\u4f8b\u5982\uff1aIOC\u3001AOP\u3001Bean\u751f\u547d\u5468\u671f\u3001\u4e0a\u4e0b\u6587\u3001\u4f5c\u7528\u57df\u3001\u8d44\u6e90\u5904\u7406\u7b49\u5185\u5bb9\u5b9e\u73b0\u3002<\/a><\/p>\n\n\n\n

\u7b2c01\u7ae0\uff1a\u5f00\u7bc7\u4ecb\u7ecd\uff0c\u6211\u8981\u5e26\u4f60\u64b8 Spring \u5566\uff01 | \u5c0f\u5085\u54e5 bugstack \u866b\u6d1e\u6808<\/a><\/a><\/p>\n\n\n\n

\u6211\u7684\u4ed3\u5e93\uff1ahttps:\/\/github.com\/CMD137\/mini-spring<\/a><\/p>\n\n\n\n

Step 1\uff1a\u521b\u5efa\u7b80\u5355\u7684Bean\u5bb9\u5668\uff1a<\/h1>\n\n\n\n

spring \u7684\u7279\u6027IOC\u7684\u6838\u5fc3\u5c31\u662fBean\u5bb9\u5668\uff0cSpring \u5bb9\u5668\u8d1f\u8d23\u521b\u5efa\u3001\u914d\u7f6e\u548c\u7ba1\u7406 Bean \u5bf9\u8c61\u3002<\/p>\n\n\n\n

\u5728 Spring Bean \u5bb9\u5668\u7684\u573a\u666f\u4e0b\uff0c\u6211\u4eec\u9700\u8981\u4e00\u79cd\u53ef\u4ee5\u7528\u4e8e\u5b58\u653e\u548c\u540d\u79f0\u7d22\u5f15\u5f0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u6240\u4ee5\u9009\u62e9HashMap\uff08ConcurrentHashMap\uff09\u3002<\/p>\n\n\n\n

\u672c\u8282\u5b9e\u73b0Bean \u7684\u5b9a\u4e49\u3001\u6ce8\u518c\u3001\u83b7\u53d6\u4e09\u4e2a\u57fa\u672c\u6b65\u9aa4\u3002<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
public class BeanDefinition {
     private Object bean;

     public BeanDefinition(Object bean){
          this.bean = bean;
     }

     public Object getBean(){
          return bean;
     }
}<\/code><\/pre>\n\n\n\n
public interface BeanFactory {

    public Object getBean(String name);

    public void registerBeanDefinition(String name, BeanDefinition beanDefinition);
    
}<\/code><\/pre>\n\n\n\n
public class DefaultBeanFactory implements BeanFactory{

    private ConcurrentMap<String, BeanDefinition> beanDefinitionMap = new ConcurrentHashMap<String, BeanDefinition>();

    @Override
    public Object getBean(String name) {
        Object bean = beanDefinitionMap.get(name).getBean();
        if (bean == null){
            throw new RuntimeException(\"bean not found\");
        }
        return bean;
    }

    @Override
    public void registerBeanDefinition(String name, BeanDefinition beanDefinition) {
        if (beanDefinitionMap.containsKey(name)){
            throw new RuntimeException(\"bean already exists\");
        }
        beanDefinitionMap.put(name,beanDefinition);
    }
}<\/code><\/pre>\n\n\n\n
\u6b64\u8282\u7684BeanDefinition \u4f7f\u7528Object\u7ba1\u7406\uff0c\u6240\u4ee5\u5728\u6ce8\u518c\u65f6\u5148\u5f97\u5b9e\u4f8b\u5316\u3002\u8981\u628a\u5b9e\u4f8b\u5316\u4e5f\u4ea4\u7ed9spring\u5bb9\u5668\uff0c\u5c31\u8981\u7528class\u800c\u975eObject\u3002\u4e0b\u8282\u8fdb\u884c\u6539\u9020\u3002<\/p>\n\n\n\n
Step 2\uff1a\u5b9e\u73b0Bean \u7684\u5b9a\u4e49\u3001\u6ce8\u518c\u3001\u83b7\u53d6\uff1a<\/h1>\n\n\n\n
\u76ee\u6807\uff1a<\/h2>\n\n\n\n
    \n
  • \u628a Bean \u7684\u521b\u5efa\u4ea4\u7ed9\u5bb9\u5668\uff0c\u800c\u4e0d\u662f\u6211\u4eec\u5728\u8c03\u7528\u65f6\u5019\u4f20\u9012\u4e00\u4e2a\u5b9e\u4f8b\u5316\u597d\u7684 Bean \u5bf9\u8c61\uff0c<\/li>\n\n\n\n
  • \u4f7f\u7528\u5355\u4f8b\u6a21\u5f0f\u3001\u521b\u5efa\u5355\u4f8b\u5bf9\u8c61\uff0c\u5728\u5bf9\u8c61\u7684\u4e8c\u6b21\u83b7\u53d6\u65f6\u662f\u53ef\u4ee5\u4ece\u5185\u5b58\uff08\u5b9e\u4f8b\u6c60\u3001\u5b9e\u4f8b\u8868\uff09\u4e2d\u83b7\u53d6\u5bf9\u8c61\u7684\u3002<\/li>\n\n\n\n
  • \u4f7f\u7528\u6a21\u677f\u6a21\u5f0f\uff0c\u4e3a\u5c06\u6765\u6269\u5bb9\u5176\u4ed6\u529f\u80fd\u505a\u597d\u6269\u5c55\u6027\u9ad8\u7684\u67b6\u6784\u3002<\/li>\n<\/ul>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    Spring Bean \u5bb9\u5668\u7c7b\u5173\u7cfb\uff1a
    <\/h2>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n
    \u5177\u4f53\u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
    0.\u5f02\u5e38\u7c7b\uff1a<\/h3>\n\n\n\n
    \u5de5\u5177\uff0c\u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684\u3002<\/p>\n\n\n\n
    public class BeansException extends RuntimeException{
        public BeansException(String msg) {
            super(msg);
        }

        public BeansException(String msg, Throwable cause) {
            super(msg, cause);
        }
    }<\/code><\/pre>\n\n\n\n
    1.BeanDefinition \u5b9a\u4e49\uff1a<\/h3>\n\n\n\n
    BeanDefinition<\/code> \u662f IoC \u5bb9\u5668\u7684\u6838\u5fc3\u5143\u4fe1\u606f\u8f7d\u4f53<\/strong>\uff0c\u5b83\u63cf\u8ff0\u4e86\u4e00\u4e2a bean \u7684\u5b9a\u4e49<\/strong>\uff0c\u5305\u62ec\u5b83\u7684 class \u7c7b\u578b\u3001\u4f5c\u7528\u57df\u3001\u6784\u9020\u53c2\u6570\u3001\u5c5e\u6027\u7b49\u3002
    \u5728\u5f53\u524d\u9636\u6bb5\u7684\u7b80\u5316\u7248\u672c\u4e2d\uff0c\u5b83\u53ea\u5305\u542b\u4e86 beanClass<\/code> \u5b57\u6bb5\uff0c\u7528\u6765\u4fdd\u5b58 bean \u7684 Class<\/code> \u5bf9\u8c61\uff0c\u4ee3\u66ff\u4e86Step1\u7684Object\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u628a Bean \u7684\u5b9e\u4f8b\u5316\u64cd\u4f5c\u653e\u5230\u5bb9\u5668\u4e2d\u5904\u7406\u4e86\u3002<\/p>\n\n\n\n
    public class BeanDefinition {
        private Class beanClass;

        public BeanDefinition(Class beanClass) {
            this.beanClass = beanClass;
        }

        public Class getBeanClass() {
            return beanClass;
        }
    }<\/code><\/pre>\n\n\n\n
    2.\u5355\u4f8b\u6ce8\u518c\u63a5\u53e3\u5b9a\u4e49\u548c\u5b9e\u73b0\uff1a<\/h3>\n\n\n\n
    \u5b9a\u4e49\u4e86\u4e00\u4e2a\u83b7\u53d6\u5355\u4f8b\u5bf9\u8c61\u7684\u63a5\u53e3\uff1a<\/p>\n\n\n\n
    public interface SingletonBeanRegistry {
        Object getSingleton(String beanName);
    }<\/code><\/pre>\n\n\n\n
    \u5728 DefaultSingletonBeanRegistry \u4e2d\u4e3b\u8981\u5b9e\u73b0 getSingleton \u65b9\u6cd5\uff0c\u540c\u65f6\u5b9e\u73b0\u4e86\u4e00\u4e2a\u53d7\u4fdd\u62a4\u7684 addSingleton \u65b9\u6cd5\u3002\u7ef4\u62a4\u4e86\u5355\u4f8b\u5bf9\u8c61\u6c60\u3002\u5b9e\u73b0\u4e86\u6700\u57fa\u7840\u7684\u5355\u4f8b\u5bf9\u8c61\u6ce8\u518c\u4e0e\u83b7\u53d6\u673a\u5236\u3002<\/p>\n\n\n\n
    public class DefaultSingletonBeanRegistry implements SingletonBeanRegistry {\n\n    \/\/\u5355\u4f8b\u5bf9\u8c61\u6c60\n    private Map<String, Object> singletonObjects = new ConcurrentHashMap<>();\n    @Override\n    public Object getSingleton(String beanName) {\n        return singletonObjects.get(beanName);\n    }\n    protected void addSingleton(String beanName, Object singletonObject) {\n        singletonObjects.put(beanName, singletonObject);\n    }\n}<\/code><\/pre>\n\n\n\n
    3.Bean\u521b\u5efa\u5de5\u5382\u7684\u62bd\u8c61\u7c7b AbstractBeanFactory\uff1a<\/h3>\n\n\n\n
    BeanFactory \u7684\u62bd\u8c61\u5b9e\u73b0\uff0c\u5c01\u88c5\u4e86\u201c\u83b7\u53d6 Bean\u201d\u7684\u6574\u4f53\u6d41\u7a0b\uff1a
    * \u5148\u4ece\u5355\u4f8b\u6c60\u83b7\u53d6\uff1b
    * \u5982\u679c\u6ca1\u6709\uff0c\u5c31\u62ff\u5230\u5b9a\u4e49\u3001\u521b\u5efa Bean\u3001\u6ce8\u518c\u5230\u5355\u4f8b\u6c60\u3002
    <\/p>\n\n\n\n
    public abstract class AbstractBeanFactory extends DefaultSingletonBeanRegistry implements BeanFactory {\n    @Override\n    public Object getBean(String beanName) {\n        Object bean = getSingleton(beanName);\n\n        \/\/\u5982\u679cbean\u5b9e\u4f8b\u5df2\u7ecf\u5b58\u5728\uff0c\u76f4\u63a5\u8fd4\u56de\uff1b\n        if (bean != null) {\n            return bean;\n        }\n\n        \/\/\u4e0d\u5b58\u5728\uff0c\u624d\u521b\u5efa\u5e76\u8fd4\u56de\uff1a\n        BeanDefinition beanDefinition = getBeanDefinition(beanName);\n        return createBean(beanName,beanDefinition);\n    }\n\n    protected abstract BeanDefinition getBeanDefinition(String beanName);\n    protected abstract Object createBean(String beanName,BeanDefinition beanDefinition);\n}<\/code><\/pre>\n\n\n\n
    4.\u5b9e\u4f8b\u5316Bean\u7c7b AbstractAutowireCapableBeanFactory\uff1a<\/h3>\n\n\n\n
    \u8d1f\u8d23\u771f\u6b63\u5730\u201cnew \u4e00\u4e2a Bean\u201d\uff0c\u7136\u540e\u52a0\u5165\u5355\u4f8b\u6c60\u3002<\/p>\n\n\n\n
    public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFactory {
        @Override
        protected Object createBean(String beanName, BeanDefinition beanDefinition) {
            Object bean = null;

            try {
                bean = beanDefinition.getBeanClass().newInstance();
            } catch (InstantiationException | IllegalAccessException e) {
                throw new BeansException(\"Instantiation of bean failed\",e);
            }

            addSingleton(beanName,bean);
            return bean;
        }
    }<\/code><\/pre>\n\n\n\n
    \u5728 AbstractAutowireCapableBeanFactory \u7c7b\u4e2d\u5b9e\u73b0\u4e86 Bean \u7684\u5b9e\u4f8b\u5316\u64cd\u4f5c newInstance<\/code>\uff0c\u5176\u5b9e\u8fd9\u5757\u4f1a\u57cb\u4e0b\u4e00\u4e2a\u5751\uff0c\u6709\u6784\u9020\u51fd\u6570\u5165\u53c2\u7684\u5bf9\u8c61\u600e\u4e48\u5904\u7406<\/strong>\uff1f<\/p>\n\n\n\n
    5.\u6ce8\u518cBeanDefinition\u7684\u63a5\u53e3 BeanDefinitionRegistry\uff1a<\/h3>\n\n\n\n
    public interface BeanDefinitionRegistry {
        void registerBeanDefinition(String beanName, BeanDefinition beanDefinition);
    }<\/code><\/pre>\n\n\n\n
    \u4e3a\u4ec0\u4e48\u8fd9\u91cc\u6709\u8fd9\u4e2a\u63a5\u53e3\uff1f\u65e2\u7136\u662f\u6ce8\u518c\uff0c\u4e3a\u4ec0\u4e48\u4e0d\u628a\u6ce8\u518c\u8868\u5199\u8fdb\u6765\uff0c\u53d8\u6210\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff0c\u8ba9\u6700\u7ec8\u7c7b\u7ee7\u627f\uff1f
    \u7b54\uff1a\u201c\u201c\u5b9a\u4e49\u201d\u5c5e\u4e8e Registry\uff0c\u201c\u521b\u5efa\u3001\u7ba1\u7406\u201d\u5c5e\u4e8e Factory<\/strong>\u3002\u201d\u53e6\u5916\uff0c\u4ece\u8bed\u8a00\u89d2\u5ea6\u6765\u8bf4\uff0cjava\u4e0d\u652f\u6301\u591a\u7ee7\u627f\uff0c\u4f46\u53ef\u4ee5\u540c\u65f6 \u7ee7\u627f+\u5b9e\u73b0\u63a5\u53e3\u3002<\/p>\n\n\n\n
    6.\u6838\u5fc3\u7c7b\u5b9e\u73b0(DefaultListableBeanFactory)\uff1a<\/h3>\n\n\n\n
      \n
    • \u65e2\u662f Bean \u5de5\u5382\u7684\u5177\u4f53\u5b9e\u73b0\u7c7b<\/strong>\uff0c\u53c8\u662f BeanDefinition \u6ce8\u518c\u8868\u7684\u5b9e\u73b0<\/strong>\u3002<\/li>\n\n\n\n
    • \u5b83\u6301\u6709\u5e76\u7ba1\u7406\u6240\u6709\u7684 BeanDefinition\uff08Bean \u7684\u5143\u4fe1\u606f\uff09\uff0c\u4fdd\u8bc1 Bean \u6ce8\u518c\u7684\u552f\u4e00\u6027\u3002<\/li>\n\n\n\n
    • \u901a\u8fc7\u5b9e\u73b0 BeanDefinitionRegistry<\/code> \u63a5\u53e3\uff0c\u5b9e\u73b0\u4e86\u5411\u5bb9\u5668\u4e2d\u6ce8\u518c Bean \u5b9a\u4e49\u7684\u80fd\u529b\u3002<\/li>\n\n\n\n
    • \u7ee7\u627f\u4e86 AbstractAutowireCapableBeanFactory<\/code>\uff0c\u83b7\u5f97\u4e86\u6839\u636e BeanDefinition \u521b\u5efa Bean \u5b9e\u4f8b\u7684\u80fd\u529b\u3002<\/li>\n<\/ul>\n\n\n\n
      public class DefaultListableBeanFactory extends  AbstractAutowireCapableBeanFactory implements  BeanDefinitionRegistry{\n\n    \/\/bean\u6ce8\u518c\u8868\n    private Map<String, BeanDefinition> beanDefinitionMap =new ConcurrentHashMap<>();\n    \n    @Override\n    protected BeanDefinition getBeanDefinition(String beanName) {\n        BeanDefinition beanDefinition = beanDefinitionMap.get(beanName);\n        if (beanDefinition == null){\n            throw new BeansException(\"No bean named '\" + beanName + \"' is defined\");\n        }\n        return beanDefinition;\n    }\n    @Override\n    public void registerBeanDefinition(String beanName, BeanDefinition beanDefinition) {\n        if (beanDefinitionMap.containsKey(beanName)){\n            throw new BeansException(beanName + \"already exists\");\n        }\n        beanDefinitionMap.put(beanName,beanDefinition);\n    }\n}<\/code><\/pre>\n\n\n\n
      \u6838\u5fc3\u7684\u4e24\u4e2amap\uff1a<\/h2>\n\n\n\n
      \u5bf9\u8c61\u540d<\/th>beanDefinitionMap
      Bean\u6ce8\u518c\u8868<\/th>      		singletonObjects
      Bean\u5355\u4f8b\u6c60<\/th><\/tr><\/thead>
      \u5b58\u50a8\u5185\u5bb9<\/td>Bean \u7684\u5b9a\u4e49\u4fe1\u606f\uff08BeanDefinition\uff09<\/td>\u5df2\u521b\u5efa\u7684\u5355\u4f8b Bean \u5b9e\u4f8b\uff08Object\uff09<\/td><\/tr>
      \u6240\u5728\u7c7b<\/td>DefaultListableBeanFactory<\/td>DefaultSingletonBeanRegistry<\/td><\/tr>
      \u4f5c\u7528<\/td>\u7ba1\u7406 Bean \u6ce8\u518c\u4fe1\u606f\uff0c\u544a\u8bc9\u5bb9\u5668\u5982\u4f55\u521b\u5efa Bean<\/td>\u7f13\u5b58\u5355\u4f8b\u5b9e\u4f8b\uff0c\u4fdd\u8bc1 Bean \u552f\u4e00<\/td><\/tr>
      \u8bbf\u95ee\u65f6\u673a<\/td>\u521b\u5efa Bean \u4e4b\u524d\u83b7\u53d6\u5b9a\u4e49<\/td>\u53d6\u7528\u5df2\u521b\u5efa\u7684 Bean \u5b9e\u4f8b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
      @org.junit.jupiter.api.Test\npublic void test_BeanFactory(){\n\n    \/\/ 1.\u521d\u59cb\u5316 BeanFactory\n    DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();\n    \/\/ 2.\u6ce8\u518c bean\n    BeanDefinition beanDefinition = new BeanDefinition(UserService.class);\n    beanFactory.registerBeanDefinition(\"userService\", beanDefinition);\n    \/\/ 3.\u7b2c\u4e00\u6b21\u83b7\u53d6 bean:\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u3002\n    UserService userService = (UserService) beanFactory.getBean(\"userService\");\n    userService.queryUserInfo();\n    \/\/ 4.\u7b2c\u4e8c\u6b21\u83b7\u53d6 bean from Singleton\uff0c\u4ece\u5b9e\u4f8bmap\u8868\u91cc\u53d6\u5f97\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002\n    UserService userService_singleton = (UserService) beanFactory.getBean(\"userService\");\n    userService_singleton.queryUserInfo();\n    \/\/ 5.\u89c2\u5bdf\u4e8c\u8005\u7684hashCode,\u9a8c\u8bc1\u662f\u5426\u662f\u4e00\u4e2a\u5b9e\u4f8b\uff1a\n    System.out<\/em>.println(\"userService.hashCode:\"+userService.hashCode());\n    System.out<\/em>.println(\"userService_singleton.hashCode:\"+userService_singleton.hashCode());\n}<\/code><\/pre>\n\n\n\n
      \u7ed3\u679c\uff1a<\/p>\n\n\n\n
      \u67e5\u8be2\u7528\u6237\u4fe1\u606f
      \u67e5\u8be2\u7528\u6237\u4fe1\u606f
      userService.hashCode:945591847
      userService_singleton.hashCode:945591847<\/code><\/pre>\n\n\n\n
      Step 3\uff1a\u57fa\u4e8eCglib\u5b9e\u73b0\u542b\u53c2\u6784\u9020\u51fd\u6570\u7684\u7c7b\u7684\u5b9e\u4f8b\u5316\u7b56\u7565\uff1a<\/h1>\n\n\n\n
      \u76ee\u6807\uff1a<\/h2>\n\n\n\n
      \u6dfb\u52a0\u542b\u53c2\u6784\u9020\u51fd\u6570\u7684\u5b9e\u4f8b\u5316\u65b9\u5f0f<\/strong>\u3002<\/p>\n\n\n\n
      \u4e24\u4e2a\u95ee\u9898\uff1a<\/p>\n\n\n\n
        \n
      • \u4ece\u54ea\u5408\u7406\u7684\u628a\u6784\u9020\u51fd\u6570\u7684\u5165\u53c2\u4fe1\u606f\u4f20\u9012\u5230\u5b9e\u4f8b\u5316\u64cd\u4f5c\u91cc\uff1f<\/strong><\/li>\n<\/ul>\n\n\n\n
        \u53c2\u8003 Spring Bean \u5bb9\u5668\u6e90\u7801\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5728 BeanFactory \u4e2d\u6dfb\u52a0 Object getBean(String name, Object... args)<\/code> \u63a5\u53e3\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5728\u83b7\u53d6 Bean \u65f6\u628a\u6784\u9020\u51fd\u6570\u7684\u5165\u53c2\u4fe1\u606f\u4f20\u9012\u8fdb\u53bb\u4e86\u3002<\/p>\n\n\n\n
          \n
        • \u600e\u4e48\u53bb\u5b9e\u4f8b\u5316\u542b\u6709\u6784\u9020\u51fd\u6570\u7684\u5bf9\u8c61\uff1f<\/strong><\/li>\n<\/ul>\n\n\n\n
          \u4e24\u4e2a\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
            \n
          1. \u57fa\u4e8e Java \u672c\u8eab\u81ea\u5e26\u7684\u65b9\u6cd5 DeclaredConstructor<\/code><\/li>\n\n\n\n
          2. \u4f7f\u7528 Cglib \u6765\u52a8\u6001\u521b\u5efa Bean \u5bf9\u8c61\u3002<\/li>\n<\/ol>\n\n\n\n
            <\/p>\n\n\n\n
            \u771f\u5b9eSpring \u662f\u600e\u4e48\u505a\u7684\uff1f<\/strong><\/p>\n\n\n\n
            Spring \u6709\u4e24\u79cd\u4e3b\u8981\u7684\u7b56\u7565\u7c7b\uff1a<\/p>\n\n\n\n
              \n
            • SimpleInstantiationStrategy<\/code>\uff1a\u7528 Java \u53cd\u5c04\u8c03\u7528\u6784\u9020\u51fd\u6570\u3002<\/li>\n\n\n\n
            • CglibSubclassingInstantiationStrategy<\/code>\uff1a\u5f53\u9700\u8981\u521b\u5efa\u4ee3\u7406\u65f6\u7528\u3002<\/li>\n<\/ul>\n\n\n\n
              Spring \u4e2d BeanDefinition<\/code> \u4f1a\u5305\u542b\u6784\u9020\u53c2\u6570\u4fe1\u606f\uff0c\u6700\u7ec8\u901a\u8fc7 ConstructorResolver<\/code> \u8fdb\u884c\u81ea\u52a8\u5339\u914d\u3002<\/p>\n\n\n\n
              \"\"<\/div><\/figure>\n\n\n\n
              Spring Bean \u5bb9\u5668\u7c7b\u5173\u7cfb\uff1a<\/strong><\/h2>\n\n\n\n
              \"\"<\/div><\/figure>\n\n\n\n
              \u5177\u4f53\u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
              1. \u65b0\u589e getBean \u63a5\u53e3<\/h3>\n\n\n\n
              public interface BeanFactory {\n    Object getBean(String beanName) throws BeansException;\n    Object getBean(String name, Object... args) throws BeansException;\n}<\/code><\/pre>\n\n\n\n
              2.\u4f18\u5316AbstractBeanFactory\uff1a
              <\/h3>\n\n\n\n
                \n
              • \u5f15\u5165\u652f\u6301\u6784\u9020\u53c2\u6570\u7684\u91cd\u8f7d getBean<\/code> \u65b9\u6cd5\u548c\u7edf\u4e00\u7684 doGetBean<\/code> \u5904\u7406\u6d41\u7a0b\uff0c\u5b9e\u73b0\u4e86\u66f4\u7075\u6d3b\u7684\u6709\u53c2\u5b9e\u4f8b\u5316\u80fd\u529b<\/li>\n\n\n\n
              • \u589e\u52a0\u4e86\u6cdb\u578b\u652f\u6301\u4ee5\u63d0\u5347\u7c7b\u578b\u5b89\u5168\uff0c\u5e76\u4e14\u4f7f\u5f97\u83b7\u53d6\u662f\u4e0d\u518d\u624b\u52a8\u7c7b\u578b\u8f6c\u6362<\/li>\n<\/ul>\n\n\n\n
                public abstract class AbstractBeanFactory extends DefaultSingletonBeanRegistry implements BeanFactory {
                    @Override
                    public Object getBean(String name) throws BeansException {
                        return doGetBean(name, null);
                    }

                    @Override
                    public Object getBean(String name, Object... args) throws BeansException {
                        return doGetBean(name, args);
                    }

                    protected <T> T doGetBean(final String name, final Object[] args) {
                        Object bean = getSingleton(name);
                        if (bean != null) {
                            return (T) bean;
                        }
                        BeanDefinition beanDefinition = getBeanDefinition(name);
                        return (T) createBean(name, beanDefinition, args);
                    }

                    protected abstract BeanDefinition getBeanDefinition(String beanName) throws BeansException;

                    protected abstract Object createBean(String beanName, BeanDefinition beanDefinition, Object[] args) throws BeansException;
                }<\/code><\/pre>\n\n\n\n
                3. \u5b9a\u4e49\u5b9e\u4f8b\u5316\u7b56\u7565\u63a5\u53e3<\/h3>\n\n\n\n
                public interface InstantiationStrategy {
                    Object instantiate(BeanDefinition beanDefinition, String beanName, Constructor ctor, Object[] args) throws BeansException;
                }<\/code><\/pre>\n\n\n\n
                \u8865\u5145\uff1aConstructor \u662f\u4ec0\u4e48\uff1f<\/h4>\n\n\n\n
                \u5728 Java \u4e2d\uff0cConstructor<\/code> \u662f\u53cd\u5c04 API \u63d0\u4f9b\u7684\u7c7b\uff0c\u4ee3\u8868\u67d0\u4e2a\u7c7b\u7684\u67d0\u4e2a\u6784\u9020\u51fd\u6570
                \u53ef\u4ee5\u7528\u5b83\u505a\uff1a<\/p>\n\n\n\n
                  \n
                • \u83b7\u53d6\u6784\u9020\u51fd\u6570\u5143\u4fe1\u606f\uff08\u53c2\u6570\u7c7b\u578b\u3001\u6ce8\u89e3\u7b49\uff09<\/li>\n\n\n\n
                • \u8c03\u7528\u6784\u9020\u51fd\u6570\u521b\u5efa\u5bf9\u8c61<\/li>\n<\/ul>\n\n\n\n
                  \u53c2\u6570<\/th>\u89e3\u91ca<\/th><\/tr><\/thead>
                  Constructor ctor<\/code><\/td>\u6307\u5b9a \u7528\u54ea\u4e2a\u6784\u9020\u51fd\u6570<\/strong> \u521b\u5efa Bean \u5b9e\u4f8b<\/td><\/tr>
                  Object[] args<\/code><\/td>\u6784\u9020\u51fd\u6570\u7684 \u5165\u53c2\u503c<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                  4.JDK\u5b9e\u4f8b\u5316\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n
                  SimpleInstantiationStrategy<\/code> \u4f7f\u7528 Java \u539f\u751f\u53cd\u5c04\uff0c\u6839\u636e\u662f\u5426\u4f20\u5165\u6784\u9020\u5668\uff08ctor\uff09\u9009\u62e9\u5408\u9002\u65b9\u5f0f new \u51fa\u5bf9\u8c61\uff0c\u662f\u6700\u57fa\u7840\u7684\u5b9e\u4f8b\u5316\u7b56\u7565\u3002spring\u9ed8\u8ba4\u7b56\u7565\u3002<\/p>\n\n\n\n
                  public class SimpleInstantiationStrategy implements InstantiationStrategy {
                      @Override
                      public Object instantiate(BeanDefinition beanDefinition, String beanName, Constructor ctor, Object[] args) throws BeansException {
                          Class clazz = beanDefinition.getBeanClass();
                          try {
                              if (null != ctor) {
                                  return ctor.newInstance(args);
                              } else {
                                  return clazz.getDeclaredConstructor().newInstance();
                              }
                          } catch (NoSuchMethodException | InstantiationException | IllegalAccessException | InvocationTargetException e) {
                              throw new BeansException(\"Failed to instantiate [\" + clazz.getName() + \"]\", e);
                          }
                      }
                  }<\/code><\/pre>\n\n\n\n
                  5. Cglib \u5b9e\u4f8b\u5316\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n
                  \u8bb0\u5f97\u5bfc\u5305\uff1a<\/p>\n\n\n\n
                  <dependencies>\n    <dependency>\n        <groupId>cglib<\/groupId>\n        <artifactId>cglib<\/artifactId>\n        <version>3.3.0<\/version>\n    <\/dependency>\n<\/dependencies><\/code><\/pre>\n\n\n\n
                  public class CglibSubclassingInstantiationStrategy implements InstantiationStrategy {\n    @Override\n    public Object instantiate(BeanDefinition beanDefinition, String beanName, Constructor ctor, Object[] args) throws BeansException {\n\n        \/\/CGLIB \u7684\u6838\u5fc3\u7c7b\uff0c\u7528\u6765\u751f\u6210\u5b50\u7c7b\u5bf9\u8c61\u7684\u5de5\u5177\u3002\n        Enhancer enhancer = new Enhancer();\n\n        \/\/\u8bbe\u7f6e\u201c\u76ee\u6807\u7c7b\u201d\u4e3a\u88ab\u4ee3\u7406\u7684\u7236\u7c7b\uff08\u4e5f\u5c31\u662f\u4f60\u7684 Bean \u539f\u59cb\u7c7b\uff09,CGLIB \u662f\u901a\u8fc7 \u7ee7\u627f\uff08\u5b50\u7c7b\uff09\u65b9\u5f0f\u4ee3\u7406\u7684\n        enhancer.setSuperclass(beanDefinition.getBeanClass());\n\n        \/\/\u8bbe\u7f6e\u56de\u8c03\u5bf9\u8c61\uff08Callback\uff09\uff0c\u5373\u5f53\u4ee3\u7406\u7c7b\u7684\u65b9\u6cd5\u88ab\u8c03\u7528\u65f6\uff0c\u5982\u4f55\u8fdb\u884c\u201c\u62e6\u622a\u201d\u5904\u7406\u3002\n        enhancer.setCallback(new NoOp() {\n            \/\/NoOp \u662f CGLIB \u5185\u7f6e\u7684\u4e00\u4e2a\u56de\u8c03\u5b9e\u73b0\uff0c\u8868\u793a\u201c\u4e0d\u505a\u4efb\u4f55\u589e\u5f3a\u201d\u3002\u8fd9\u91cc\u53ea\u662f\u5728\u6f14\u793a\u3002\u53ef\u66ff\u6362\u4e3a\u52a8\u6001\u4ee3\u7406\u3001\u61d2\u52a0\u8f7d\u7b49...\n            @Override\n            public int hashCode() {\n                return super.hashCode();\n            }\n        });\n\n        \/*\n        \u5224\u65ad\u662f\u5426\u6709\u6784\u9020\u5668\uff1a\n            \u5982\u679c\u6ca1\u6709\uff0c\u8c03\u7528\u9ed8\u8ba4\u6784\u9020\u65b9\u6cd5 enhancer.create()\n            \u5982\u679c\u6709\u53c2\u6570\u6784\u9020\u65b9\u6cd5\uff0c\u5219\u901a\u8fc7 enhancer.create(ctor.getParameterTypes(), args) \u521b\u5efa\u5bf9\u8c61\n         *\/\n        if (null == ctor) return enhancer.create();\n        return enhancer.create(ctor.getParameterTypes(), args);\n    }\n}<\/code><\/pre>\n\n\n\n
                  \u5728\u9700\u8981\u201c\u751f\u6210\u5b50\u7c7b\u201d\u6765\u5b9e\u73b0\u66f4\u9ad8\u7ea7\u884c\u4e3a\u65f6\uff08\u5982\uff1a\u65b9\u6cd5\u6ce8\u5165\u3001\u52a8\u6001\u4ee3\u7406\u3001AOP\uff09\uff0c\u5c31\u4f7f\u7528\u8fd9\u4e2a\u7b56\u7565\u3002<\/p>\n\n\n\n
                  6\u4f18\u5316\u4e3a\u521b\u5efabean\u65f6\u4f7f\u7528Cglib \u5b9e\u4f8b\u5316\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n
                  AbstractAutowireCapableBeanFactory\u5f15\u5165\u4e86\u201c\u5b9e\u4f8b\u5316\u7b56\u7565\u201d\u6a21\u5f0f\uff0c\u5c06\u5177\u4f53\u521b\u5efa\u5bf9\u8c61\u7684\u8fc7\u7a0b\u59d4\u6258\u7ed9\u7b56\u7565\u7c7b<\/p>\n\n\n\n
                  public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFactory {\n\n    \/\/\u5b9a\u4e49\u4e86\u4e00\u4e2a\u521b\u5efa\u5bf9\u8c61\u7684\u5b9e\u4f8b\u5316\u7b56\u7565\u5c5e\u6027\u7c7b InstantiationStrategy instantiationStrategy\uff0c\u8fd9\u91cc\u6211\u4eec\u9009\u62e9\u4e86 Cglib \u7684\u5b9e\u73b0\u7c7b\n    private InstantiationStrategy instantiationStrategy = new CglibSubclassingInstantiationStrategy();\n\n    @Override\n    protected Object createBean(String beanName, BeanDefinition beanDefinition, Object[] args) throws BeansException {\n        Object bean = null;\n        try {\n            bean = createBeanInstance(beanDefinition, beanName, args);\n        } catch (Exception e) {\n            throw new BeansException(\"Instantiation of bean failed\", e);\n        }\n\n        addSingleton(beanName, bean);\n        return bean;\n    }\n\n    protected Object createBeanInstance(BeanDefinition beanDefinition, String beanName, Object[] args) {\n        Constructor constructorToUse = null;\n        Class beanClass = beanDefinition.getBeanClass();\n        \/\/\u901a\u8fc7 beanClass.getDeclaredConstructors() \u65b9\u5f0f\u53ef\u4ee5\u83b7\u53d6\u5230\u4f60\u6240\u6709\u7684\u6784\u9020\u51fd\u6570\uff0c\u662f\u4e00\u4e2a\u96c6\u5408\n        Constructor[] declaredConstructors = beanClass.getDeclaredConstructors();\n\n        \/\/\u5faa\u73af\u6bd4\u5bf9\u5339\u914d\u6784\u9020\u51fd\u6570\u4e0eargs\uff0c\u6b64\u5904\u7b80\u5316\u4e3a\u6570\u91cf\u5bf9\u6bd4\uff0c\u5b9e\u9645\u8fd8\u9700\u6bd4\u5bf9\u5165\u53c2\u7c7b\u578b\n        for (Constructor ctor : declaredConstructors) {\n            if (null != args && ctor.getParameterTypes().length == args.length) {\n                constructorToUse = ctor;\n                break;\n            }\n        }\n        \n        return getInstantiationStrategy().instantiate(beanDefinition, beanName, constructorToUse, args);\n    }\n\n    public InstantiationStrategy getInstantiationStrategy() {\n        return instantiationStrategy;\n    }\n\n    public void setInstantiationStrategy(InstantiationStrategy instantiationStrategy) {\n        this.instantiationStrategy = instantiationStrategy;\n    }\n\n}<\/code><\/pre>\n\n\n\n
                  \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
                  \u6539\u9020\u6d4b\u8bd5bean\uff1a<\/p>\n\n\n\n
                  public class UserService {\n\n    private String name;\n\n    public UserService(String name) {\n        this.name = name;\n    }\n\n    public void queryUserInfo() {\n        System.out.println(\"\u67e5\u8be2\u7528\u6237\u4fe1\u606f\uff1a\" + name);\n    }\n\n    @Override\n    public String toString() {\n        final StringBuilder sb = new StringBuilder(\"\");\n        sb.append(\"\").append(name);\n        return sb.toString();\n    }\n}<\/code><\/pre>\n\n\n\n
                  \u6d4b\u8bd51\uff1a<\/p>\n\n\n\n
                  @org.junit.jupiter.api.Test\npublic void test_BeanFactory() {\n\n    \/\/ 1.\u521d\u59cb\u5316 BeanFactory\n    DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();\n\n    \/\/ 2. \u6ce8\u5165bean\n    BeanDefinition beanDefinition = new BeanDefinition(UserService.class);\n    beanFactory.registerBeanDefinition(\"userService\", beanDefinition);\n\n    \/\/ 3.\u83b7\u53d6bean\n    UserService userService = (UserService) beanFactory.getBean(\"userService\", \"CMD137\");\n    userService.queryUserInfo();\n}<\/code><\/pre>\n\n\n\n
                  \u7ed3\u679c\uff1a<\/p>\n\n\n\n
                  \u67e5\u8be2\u7528\u6237\u4fe1\u606f\uff1aCMD137\n<\/code><\/pre>\n\n\n\n
                  Step 4\uff1a\u6ce8\u5165\u5c5e\u6027\u548c\u4f9d\u8d56\u5bf9\u8c61\uff1a<\/h1>\n\n\n\n
                  \u76ee\u6807\uff1a<\/h2>\n\n\n\n
                    \n
                  • \u901a\u8fc7\u53cd\u5c04\u673a\u5236\u5c06 Bean \u5bf9\u8c61\u7684\u5b57\u6bb5\u8fdb\u884c\u8d4b\u503c\uff08\u5c5e\u6027\u6ce8\u5165\uff09\u3002<\/li>\n\n\n\n
                  • \u8bc6\u522b\u5b57\u6bb5\u4e0a\u7684 @Value<\/code> \u548c @Autowired<\/code> \u6ce8\u89e3\uff0c\u6267\u884c\u5bf9\u5e94\u6ce8\u5165\u903b\u8f91\u3002\n
                      \n
                    • @Value<\/code>: \u6ce8\u5165\u57fa\u672c\u7c7b\u578b\u503c\uff08\u5982\u5b57\u7b26\u4e32\u3001\u6570\u5b57\uff09\u3002<\/li>\n\n\n\n
                    • @Autowired<\/code>: \u6ce8\u5165\u53e6\u4e00\u4e2a Bean\uff08\u4f9d\u8d56\u6ce8\u5165\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
                      \u8bbe\u8ba1\uff1a<\/h2>\n\n\n\n
                        \n
                      • Spring \u7684\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u6d41\u7a0b\u662f\uff1a\u5148\u521b\u5efa\u5bf9\u8c61\uff08\u5b9e\u4f8b\u5316\uff09\uff0c\u518d\u7ed9\u5b83\u6ce8\u5165\u5c5e\u6027\uff08\u4f9d\u8d56\uff09<\/strong>\u3002\u5728 createBean()<\/code> \u65b9\u6cd5\u4e2d\uff0c\u5148\u5b9e\u4f8b\u5316 Bean\uff0c\u518d\u6267\u884c applyPropertyValues()<\/code> \u65b9\u6cd5\u6765\u586b\u5145\u5c5e\u6027<\/strong>\u3002applyPropertyValues()<\/code> \u5c31\u662f\u6267\u884c\u4f9d\u8d56\u6ce8\u5165\u7684\u5173\u952e\u6b65\u9aa4\u3002<\/li>\n\n\n\n
                      • \u8981\u7ed9 Bean \u6ce8\u5165\u54ea\u4e9b\u5c5e\u6027\uff0c\u662f\u5728 Bean \u5b9a\u4e49\uff08BeanDefinition<\/code>\uff09\u4e2d\u9884\u5148\u63cf\u8ff0\u597d\u7684\u3002\u6240\u4ee5\u5fc5\u987b\u7ed9 BeanDefinition<\/code> \u7c7b\u52a0\u4e00\u4e2a\u5c5e\u6027\uff1aPropertyValues<\/code>\uff0c\u7528\u4e8e\u8bb0\u5f55\u6240\u6709\u8981\u6ce8\u5165\u7684\u5b57\u6bb5\u53ca\u5176\u503c\u3002PropertyValues<\/code> \u7c7b\u4e2d\u5305\u542b\u591a\u4e2a PropertyValue<\/code> \u5bf9\u8c61\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u4ee3\u8868\u4e00\u4e2a\u5b57\u6bb5\u540d\u548c\u503c\uff08\u6216\u8005\u662f\u5f15\u7528 Bean\uff09\u3002<\/li>\n\n\n\n
                      • \u6709\u4e9b\u5c5e\u6027\u8981\u6ce8\u5165\u7684\u662f\u53e6\u4e00\u4e2a Bean\uff08\u5bf9\u8c61\uff09<\/strong>\uff0c\u800c\u4e0d\u662f\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u6216\u6574\u6570\u3002\u6bd4\u5982\uff1a@Autowired private UserService userService;<\/code>\u5728\u914d\u7f6e\u4e2d\uff08\u6216\u6ce8\u89e3\u89e3\u6790\u4e2d\uff09\u8fd9\u7c7b\u5c5e\u6027\u4f1a\u4ee5 \"userService\"<\/code> \u8fd9\u6837\u7684 Bean \u540d\u79f0\u51fa\u73b0\uff0c\u800c\u4e0d\u662f\u5177\u4f53\u7684\u5bf9\u8c61\u3002\u6240\u4ee5\u5f15\u5165\u4e86\u4e00\u4e2a BeanReference<\/code> \u7c7b<\/strong>\uff1a\u5b83\u4e0d\u662f\u76f4\u63a5\u4fdd\u5b58\u5bf9\u8c61\uff0c\u800c\u662f\u4fdd\u5b58\u8981\u6ce8\u5165\u7684 Bean \u7684\u540d\u79f0\u3002\u5f53\u6ce8\u5165\u65f6\uff0c\u6839\u636e\u8fd9\u4e2a\u540d\u79f0\u518d\u53bb\u5bb9\u5668\u91cc\u627e\u5bf9\u5e94\u7684 Bean \u2014\u2014 \u5982\u679c\u6ca1\u6709\uff0c\u5c31\u9012\u5f52\u521b\u5efa\u5b83\u3002<\/li>\n<\/ul>\n\n\n\n
                        Spring Bean \u5bb9\u5668\u7c7b\u5173\u7cfb\uff1a<\/strong><\/h2>\n\n\n\n
                        \"\"<\/div><\/figure>\n\n\n\n
                        \u5177\u4f53\u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
                        1.\u5b9a\u4e49\u5c5e\u6027\u7c7b\u53ca\u5c5e\u6027\u96c6\u5408\u7c7b\uff1a<\/h3>\n\n\n\n
                        public class PropertyValue {\n    private final String name;\n    private final Object value;\n    public PropertyValue(String name, Object value) {\n        this.name = name;\n        this.value = value;\n    }\n    public String getName() {\n        return name;\n    }\n    public Object getValue() {\n        return value;\n    }\n}<\/code><\/pre>\n\n\n\n
                        public class PropertyValues {
                            private final List<PropertyValue> propertyValueList = new ArrayList<>();

                            public void addPropertyValue(PropertyValue pv) {
                                this.propertyValueList.add(pv);
                            }

                            public PropertyValue[] getPropertyValues() {
                                return this.propertyValueList.toArray(new PropertyValue[0]);
                            }

                            public PropertyValue getPropertyValue(String propertyName) {
                                for (PropertyValue pv : this.propertyValueList) {
                                    if (pv.getName().equals(propertyName)) {
                                        return pv;
                                    }
                                }
                                return null;
                            }
                        }<\/code><\/pre>\n\n\n\n
                        2.\u6dfb\u52a0\u5c5e\u6027\u7c7b\u5230Bean\u5b9a\u4e49\uff1a<\/h3>\n\n\n\n
                        public class BeanDefinition {\n\n    private Class beanClass;\n\n    private PropertyValues propertyValues;\n\n    public BeanDefinition(Class beanClass) {\n        this.beanClass = beanClass;\n\n        \/\/\u7b80\u5355\u7684\u4f18\u5316\uff0c\u907f\u514d\u540e\u9762 for \u5faa\u73af\u65f6\u8fd8\u5f97\u5224\u65ad\u5c5e\u6027\u586b\u5145\u662f\u5426\u4e3a\u7a7a\n        this.propertyValues = new PropertyValues();\n    }\n\n    public BeanDefinition(Class beanClass, PropertyValues propertyValues) {\n        this.beanClass = beanClass;\n\n        \/\/\u7b80\u5355\u7684\u4f18\u5316\uff0c\u907f\u514d\u540e\u9762 for \u5faa\u73af\u65f6\u8fd8\u5f97\u5224\u65ad\u5c5e\u6027\u586b\u5145\u662f\u5426\u4e3a\u7a7a\n        this.propertyValues = propertyValues != null ? propertyValues : new PropertyValues();\n    }\n    \n    \/\/ ...get\/set\n}\n<\/code><\/pre>\n\n\n\n
                        3.BeanReference<\/code><\/strong>\uff0cBean \u7684\u5f15\u7528\uff1a<\/h3>\n\n\n\n
                        public class BeanReference {

                            private final String beanName;

                            public BeanReference(String beanName) {
                                this.beanName = beanName;
                            }

                            public String getBeanName() {
                                return beanName;
                            }

                        }<\/code><\/pre>\n\n\n\n
                        BeanReference<\/code> \u662f\u7528\u6765\u6807\u8bc6\u4e00\u4e2a\u5c5e\u6027\u4f9d\u8d56\u4e8e\u53e6\u4e00\u4e2a Bean\uff0c\u5bb9\u5668\u5728\u6ce8\u5165\u9636\u6bb5\u4f1a\u636e\u6b64\u8c03\u7528 getBean()<\/code> \u83b7\u53d6\u76ee\u6807\u5b9e\u4f8b\u8fdb\u884c\u586b\u5145\u3002<\/p>\n\n\n\n
                        \u4e5f\u5c31\u662f\u8bf4\uff0cBeanReference<\/code> \u662f\u4e00\u4e2a\u4e2d\u4ecb\u7b26\u53f7\uff1a\u5b83\u5728\u6ce8\u5165\u5c5e\u6027\u65f6\u544a\u8bc9\u5bb9\u5668\u201c\u8fd9\u91cc\u4e0d\u662f\u666e\u901a\u503c\uff0c\u800c\u662f\u53e6\u4e00\u4e2a Bean\uff0c\u8981\u5148\u53bb getBean\u201d<\/strong>\u3002<\/p>\n\n\n\n
                        \u8fd9\u4e2a\u8bbe\u8ba1\u4e3a\u5bb9\u5668\u5b9e\u73b0\u4f9d\u8d56\u6ce8\u5165\u3001\u61d2\u52a0\u8f7d\u3001\u9012\u5f52\u521b\u5efa\u3001\u5faa\u73af\u4f9d\u8d56\u5904\u7406<\/strong>\u6253\u4e0b\u4e86\u57fa\u7840\uff0c\u662f\u4e00\u4e2a\u5173\u952e\u7684\u5efa\u6a21\u5de5\u5177\u3002<\/p>\n\n\n\n
                        4. Bean \u5c5e\u6027\u586b\u5145\u90e8\u5206\uff1a<\/h3>\n\n\n\n
                        AbstractAutowireCapableBeanFactory\u5185\uff1a
                        <\/p>\n\n\n\n
                        @Override\nprotected Object createBean(String beanName, BeanDefinition beanDefinition, Object[] args) throws BeansException {\n    Object bean = null;\n    try {\n        \/\/\u521b\u5efa\u5b9e\u4f8b\n        bean = createBeanInstance(beanDefinition, beanName, args);\n        \/\/\u6ce8\u5165\u5c5e\u6027\n        applyPropertyValues(bean, beanName, beanDefinition);\n    } catch (Exception e) {\n        throw new BeansException(\"Instantiation of bean failed\", e);\n    }\n\n    addSingleton(beanName, bean);\n    return bean;\n}\n.......\nprivate void applyPropertyValues(Object bean, String beanName, BeanDefinition beanDefinition) {\n\n        \/\/\u4ecebeanDefinition\u5f97\u5230\u8fd9\u4e2abean\u7684propertyValues\u3002\u4f9d\u6b21\u6ce8\u5165\u3002\u5982\u679c\u8981\u6ce8\u5165\u7684\u5c5e\u6027\u65f6\u53e6\u4e00\u4e2abean\uff0c\u5c31getBean\uff08\u521b\u5efa\u6216\u83b7\u53d6\uff09\u3002\n        try {\n            PropertyValues propertyValues = beanDefinition.getPropertyValues();\n            for (PropertyValue propertyValue : propertyValues.getPropertyValues()) {\n\n                String name = propertyValue.getName();\n                Object value = propertyValue.getValue();\n\n                \/\/instanceof\uff1a\u5224\u65advalue\u8fd9\u4e2a\u5bf9\u8c61\u662f\u5426\u4e3aBeanReference\u7684\u5b9e\u4f8b\n                if (value instanceof BeanReference) {\n\n                    \/\/\u6ce8\u610f\u6682\u65f6\u6ca1\u6709\u53bb\u5904\u7406\u5faa\u73af\u4f9d\u8d56\u7684\u95ee\u9898\uff0c\u540e\u7eed\u8865\u5145\n                    BeanReference beanReference = (BeanReference) value;\n                    value = getBean(beanReference.getBeanName());\n                }\n\n                \/\/ \u5c5e\u6027\u586b\u5145(BeanUtil\u662fhutool\u7684)\n                BeanUtil.setFieldValue(bean, name, value);\n            }\n        } catch (Exception e) {\n            throw new BeansException(\"Error setting property values\uff1a\" + beanName);\n        }\n    }<\/code><\/pre>\n\n\n\n
                        \u6d4b\u8bd5\uff1a
                        <\/h2>\n\n\n\n
                        \u6d4b\u8bd5bean\uff1a<\/h3>\n\n\n\n
                        public class UserDao {
                            private static Map<String, String> hashMap <\/em>= new HashMap<>();
                            static {
                                hashMap<\/em>.put(\"10001\", \"CMD137\");
                                hashMap<\/em>.put(\"10002\", \"CMD138\");
                                hashMap<\/em>.put(\"10003\", \"CMD139\");
                            }
                            public String queryUserName(String uId) {
                                return hashMap<\/em>.get(uId);
                            }
                        }<\/code><\/pre>\n\n\n\n
                        public class UserService {

                            private String name;

                            public UserService() {
                                \/\/ \u5fc5\u987b\u6709\u8fd9\u4e2a\u65e0\u53c2\u6784\u9020\u5668\uff0cCGLIB \u9700\u8981\u5b83
                            }

                            public UserService(String name) {
                                this.name = name;
                            }

                            private String uId;

                            private UserDao userDao;

                            public void queryUserInfo() {
                                System.out<\/em>.println(\"\u67e5\u8be2\u7528\u6237\u4fe1\u606f\uff1a\" + userDao.queryUserName(uId));
                            }

                            public String getuId() {
                                return uId;
                            }

                            public void setuId(String uId) {
                                this.uId = uId;
                            }

                            public UserDao getUserDao() {
                                return userDao;
                            }

                            public void setUserDao(UserDao userDao) {
                                this.userDao = userDao;
                            }

                            @Override
                            public String toString() {
                                final StringBuilder sb = new StringBuilder(\"\");
                                sb.append(\"\").append(name);
                                return sb.toString();
                            }
                        }<\/code><\/pre>\n\n\n\n
                        test\uff1a
                        <\/p>\n\n\n\n
                        public void test_BeanFactory() {
                            \/\/ 1.\u521d\u59cb\u5316 BeanFactory
                            DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();

                            \/\/ 2. UserDao \u6ce8\u518c
                            beanFactory.registerBeanDefinition(\"userDao\", new BeanDefinition(UserDao.class));

                            \/\/ 3. UserService \u8bbe\u7f6e\u5c5e\u6027[uId\u3001userDao]
                            PropertyValues propertyValues = new PropertyValues();
                            propertyValues.addPropertyValue(new PropertyValue(\"uId\", \"10001\"));
                            propertyValues.addPropertyValue(new PropertyValue(\"userDao\",new BeanReference(\"userDao\")));

                            \/\/ 4. UserService \u6ce8\u5165bean
                            BeanDefinition beanDefinition = new BeanDefinition(UserService.class, propertyValues);
                            beanFactory.registerBeanDefinition(\"userService\", beanDefinition);

                            \/\/ 5. UserService \u83b7\u53d6bean
                            UserService userService = (UserService) beanFactory.getBean(\"userService\");
                            userService.queryUserInfo();
                        }<\/code><\/pre>\n\n\n\n
                        \u7ed3\u679c\uff1a<\/p>\n\n\n\n
                        \u67e5\u8be2\u7528\u6237\u4fe1\u606f\uff1aCMD137\n\nProcess finished with exit code 0<\/code><\/pre>\n\n\n\n
                        Step 5\uff1a\u8d44\u6e90\u52a0\u8f7d\u5668\u89e3\u6790\u6587\u4ef6\u6ce8\u518c\u5bf9\u8c61\uff1a<\/h1>\n\n\n\n
                        \u76ee\u6807\uff1a<\/h2>\n\n\n\n
                        \u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u7684\u65b9\u5f0f\u5c06 \u6ce8\u518cbean\u3001\u8bbe\u7f6e\u5c5e\u6027\u3001\u5bf9bean\u7684\u6ce8\u5165\u4ea4\u7531\u6846\u67b6\u5b9e\u73b0\u3002<\/p>\n\n\n\n
                        \u8bbe\u8ba1\uff1a<\/h2>\n\n\n\n
                        \u672c\u7ae0\u8282\u4e3b\u8981\u5b9e\u73b0\u4e86\u5c06 Bean \u7684\u5b9a\u4e49\u3001\u6ce8\u518c\u548c\u521d\u59cb\u5316\u901a\u8fc7 spring.xml<\/code> \u914d\u7f6e\u6587\u4ef6\u6765\u5904\u7406\uff0c\u6838\u5fc3\u5206\u4e3a\u4e24\u90e8\u5206\uff1a<\/p>\n\n\n\n
                        \u8d44\u6e90\u52a0\u8f7d\u90e8\u5206<\/strong>\uff1a
                        \u5b9e\u73b0\u4e86 Resource<\/code> \u548c ResourceLoader<\/code> \u63a5\u53e3\uff0c\u652f\u6301\u4ece\u7c7b\u8def\u5f84\uff08Classpath\uff09\u3001\u6587\u4ef6\u7cfb\u7edf\u3001\u4e91\u914d\u7f6e\u7b49\u4f4d\u7f6e\u52a0\u8f7d\u8d44\u6e90\uff0c\u7edf\u4e00\u7531 DefaultResourceLoader<\/code> \u5b9e\u73b0\u5177\u4f53\u903b\u8f91\u3002\u8fd9\u4e00\u8bbe\u8ba1\u4e0e Spring \u6e90\u7801\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n\n\n\n
                        XML \u89e3\u6790\u4e0e\u6ce8\u518c\u90e8\u5206<\/strong>\uff1a<\/p>\n\n\n\n
                          \n
                        • \u4f7f\u7528 BeanDefinitionReader<\/code> \u63a5\u53e3\u8fdb\u884c\u8d44\u6e90\u8bfb\u53d6\u4e0e Bean \u6ce8\u518c\u3002<\/li>\n\n\n\n
                        • \u63a5\u53e3 BeanDefinitionReader<\/code>\uff1a\u5b9a\u4e49\u8bfb\u53d6\u548c\u6ce8\u518c\u7684\u6807\u51c6\u3002<\/li>\n\n\n\n
                        • \u62bd\u8c61\u7c7b AbstractBeanDefinitionReader<\/code>\uff1a\u5b9e\u73b0\u901a\u7528\u903b\u8f91\uff0c\u5982\u52a0\u8f7d\u8d44\u6e90\u3001\u586b\u5145\u7ec4\u4ef6\u3002<\/li>\n\n\n\n
                        • \u5b9e\u73b0\u7c7b XmlBeanDefinitionReader<\/code>\uff1a\u4e13\u6ce8\u4e8e\u89e3\u6790 XML \u6587\u4ef6\u5e76\u6ce8\u518c Bean\u3002<\/li>\n<\/ul>\n\n\n\n
                          \"\"<\/div><\/figure>\n\n\n\n
                          Spring Bean \u5bb9\u5668\u8d44\u6e90\u52a0\u8f7d\u548c\u4f7f\u7528\u7c7b\u5173\u7cfb\uff1a<\/h3>\n\n\n\n
                          \n
                          \"\"<\/div><\/figure>\n<\/figure>\n\n\n\n
                          \u53e6\u5916\u672c\u7ae0\u8282\u8fd8\u53c2\u8003 Spring \u6e90\u7801\uff0c\u505a\u4e86\u76f8\u5e94\u63a5\u53e3\u7684\u96c6\u6210\u548c\u5b9e\u73b0\u7684\u5173\u7cfb\uff0c\u867d\u7136\u8fd9\u4e9b\u63a5\u53e3\u76ee\u524d\u8fd8\u5e76\u6ca1\u6709\u592a\u5927\u7684\u4f5c\u7528\uff0c\u4f46\u968f\u7740\u6846\u67b6\u7684\u9010\u6b65\u5b8c\u5584\uff0c\u5b83\u4eec\u4e5f\u4f1a\u53d1\u6325\u4f5c\u7528\uff1a
                          <\/p>\n\n\n\n
                            \n
                          • BeanFactory\uff0c\u5df2\u7ecf\u5b58\u5728\u7684 Bean \u5de5\u5382\u63a5\u53e3\u7528\u4e8e\u83b7\u53d6 Bean \u5bf9\u8c61\uff0c\u8fd9\u6b21\u65b0\u589e\u52a0\u4e86\u6309\u7167\u7c7b\u578b\u83b7\u53d6 Bean \u7684\u65b9\u6cd5\uff1a<T> T getBean(String name, Class<T> requiredType)<\/code><\/li>\n\n\n\n
                          • ListableBeanFactory\uff0c\u662f\u4e00\u4e2a\u6269\u5c55 Bean \u5de5\u5382\u63a5\u53e3\u7684\u63a5\u53e3\uff0c\u65b0\u589e\u52a0\u4e86 getBeansOfType<\/code>\u3001getBeanDefinitionNames()<\/code> \u65b9\u6cd5\uff0c\u5728 Spring \u6e90\u7801\u4e2d\u8fd8\u6709\u5176\u4ed6\u6269\u5c55\u65b9\u6cd5\u3002<\/li>\n\n\n\n
                          • HierarchicalBeanFactory\uff0c\u5728 Spring \u6e90\u7801\u4e2d\u5b83\u63d0\u4f9b\u4e86\u53ef\u4ee5\u83b7\u53d6\u7236\u7c7b BeanFactory \u65b9\u6cd5\uff0c\u5c5e\u4e8e\u662f\u4e00\u79cd\u6269\u5c55\u5de5\u5382\u7684\u5c42\u6b21\u5b50\u63a5\u53e3\u3002Sub-interface implemented by bean factories that can be part of a hierarchy.<\/em><\/li>\n\n\n\n
                          • AutowireCapableBeanFactory\uff0c\u662f\u4e00\u4e2a\u81ea\u52a8\u5316\u5904\u7406Bean\u5de5\u5382\u914d\u7f6e\u7684\u63a5\u53e3\uff0c\u76ee\u524d\u6848\u4f8b\u5de5\u7a0b\u4e2d\u8fd8\u6ca1\u6709\u505a\u76f8\u5e94\u7684\u5b9e\u73b0\uff0c\u540e\u7eed\u9010\u6b65\u5b8c\u5584\u3002<\/li>\n\n\n\n
                          • ConfigurableBeanFactory\uff0c\u53ef\u83b7\u53d6 BeanPostProcessor\u3001BeanClassLoader\u7b49\u7684\u4e00\u4e2a\u914d\u7f6e\u5316\u63a5\u53e3\u3002<\/li>\n\n\n\n
                          • ConfigurableListableBeanFactory\uff0c\u63d0\u4f9b\u5206\u6790\u548c\u4fee\u6539Bean\u4ee5\u53ca\u9884\u5148\u5b9e\u4f8b\u5316\u7684\u64cd\u4f5c\u63a5\u53e3\uff0c\u4e0d\u8fc7\u76ee\u524d\u53ea\u6709\u4e00\u4e2a getBeanDefinition \u65b9\u6cd5<\/li>\n<\/ul>\n\n\n\n
                            \"\"<\/div><\/figure>\n\n\n\n
                            \u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
                            0.\u5de5\u5177\u7c7bClassUtils\uff1a<\/h3>\n\n\n\n
                            \u6b64\u65b9\u6cd5\u901a\u8fc7\u201c\u4f18\u5148\u7ebf\u7a0b\u4e0a\u4e0b\u6587 + \u515c\u5e95\u7c7b\u52a0\u8f7d\u5668\u201d\u7684\u7b56\u7565\uff0c\u589e\u5f3a\u4e86\u517c\u5bb9\u6027\u548c\u7a33\u5b9a\u6027<\/strong>\u3002\u8fd9\u662f Spring \u7b49\u6846\u67b6\u4e2d\u7684\u6807\u51c6\u505a\u6cd5\u3002<\/p>\n\n\n\n
                            public class ClassUtils {

                                \/**
                            <\/em>     * <\/em>\u83b7\u53d6\u9ed8\u8ba4\u7684\u7c7b\u52a0\u8f7d\u5668
                            <\/em>     <\/em>* <\/em>@return <\/em><\/strong>\u5f53\u524d\u7ebf\u7a0b\u7684\u4e0a\u4e0b\u6587\u7c7b\u52a0\u8f7d\u5668\uff0c\u5982\u679c\u83b7\u53d6\u4e0d\u5230\uff0c\u5219\u8fd4\u56de\u52a0\u8f7d\u672c\u7c7b\u7684\u7c7b\u52a0\u8f7d\u5668
                            <\/em>     <\/em>*\/
                            <\/em>    <\/em>public static ClassLoader getDefaultClassLoader() {
                                    ClassLoader cl = null;

                                    try {
                                        \/\/ \u5c1d\u8bd5\u83b7\u53d6\u5f53\u524d\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u7684\u7c7b\u52a0\u8f7d\u5668\uff08\u6700\u5e38\u7528\u3001\u6700\u7075\u6d3b\uff09
                                        cl = Thread.currentThread<\/em>().getContextClassLoader();
                                    } catch (Throwable ex) {
                                        \/\/ \u83b7\u53d6\u5931\u8d25\u65f6\u6355\u83b7\u5f02\u5e38\uff08\u6bd4\u5982\u5b89\u5168\u6c99\u7bb1\u73af\u5883\u4f1a\u629b\u5f02\u5e38\uff09
                                        \/\/ \u6b64\u5904\u4e0d\u5904\u7406\u5f02\u5e38\uff0c\u53ea\u662f fallback \u5230\u4e0b\u4e00\u4e2a\u65b9\u6848
                                    }

                                    if (cl == null) {
                                        \/\/ \u5982\u679c\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u7c7b\u52a0\u8f7d\u5668\u4e3a null\uff0c\u5219\u4f7f\u7528\u5f53\u524d\u7c7b\uff08ClassUtils\uff09\u81ea\u8eab\u7684\u7c7b\u52a0\u8f7d\u5668
                                        cl = ClassUtils.class.getClassLoader();
                                    }

                                    \/\/ \u8fd4\u56de\u83b7\u53d6\u5230\u7684\u7c7b\u52a0\u8f7d\u5668
                                    return cl;
                                }

                            }<\/code><\/pre>\n\n\n\n
                            1.\u8d44\u6e90\u52a0\u8f7d\u63a5\u53e3\u5b9a\u4e49\u548c\u5b9e\u73b0<\/h3>\n\n\n\n
                            public interface Resource {
                                InputStream getInputStream() throws IOException;

                            }<\/code><\/pre>\n\n\n\n
                            \u5b9a\u4e49 Resource \u63a5\u53e3\uff0c\u63d0\u4f9b\u83b7\u53d6 InputStream \u6d41\u7684\u65b9\u6cd5\uff0c\u63a5\u4e0b\u6765\u518d\u5206\u522b\u5b9e\u73b0\u4e09\u79cd\u4e0d\u540c\u7684\u6d41\u6587\u4ef6\u64cd\u4f5c\uff1aclassPath\u3001FileSystem\u3001URL<\/p>\n\n\n\n
                            ClassPath<\/strong>\uff1a<\/p>\n\n\n\n
                            \/**
                            <\/em> * ClassPathResource <\/em>\u5b9e\u73b0\u4e86 <\/em>Resource <\/em>\u63a5\u53e3\uff0c
                            <\/em> <\/em>* <\/em>\u7528\u4e8e\u4ece <\/em>classpath<\/em>\uff08\u7c7b\u8def\u5f84\uff09\u4e2d\u52a0\u8f7d\u8d44\u6e90\uff0c\u5982\u914d\u7f6e\u6587\u4ef6\u3002
                            <\/em> <\/em>*\/
                            <\/em>public class ClassPathResource implements Resource {

                                \/\/ \u8d44\u6e90\u8def\u5f84\uff0c\u4f8b\u5982 \"application.xml\"
                                private final String path;

                                \/\/ \u7528\u4e8e\u52a0\u8f7d\u8d44\u6e90\u7684\u7c7b\u52a0\u8f7d\u5668
                                private ClassLoader classLoader;

                                \/**
                            <\/em>     * <\/em>\u6784\u9020\u51fd\u6570\uff0c\u53ea\u4f20\u5165\u8def\u5f84\uff0c\u4f7f\u7528\u9ed8\u8ba4\u7c7b\u52a0\u8f7d\u5668
                            <\/em>     <\/em>* <\/em>@param <\/em><\/strong>path <\/em>\u7c7b\u8def\u5f84\u4e0b\u7684\u8d44\u6e90\u8def\u5f84
                            <\/em>     <\/em>*\/
                            <\/em>    <\/em>public ClassPathResource(String path) {
                                    \/\/ \u8c03\u7528\u53e6\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u663e\u5f0f\u4f20\u5165 null\uff0c\u8868\u793a\u4f7f\u7528\u9ed8\u8ba4\u7c7b\u52a0\u8f7d\u5668
                                    \/\/ `(ClassLoader) null` \u662f\u4e00\u79cd\u8bed\u6cd5\u5199\u6cd5\uff0c\u660e\u786e\u6307\u5b9a null \u662f ClassLoader \u7c7b\u578b\uff0c\u9632\u6b62\u7c7b\u578b\u4e0d\u5339\u914d
                                    this(path, (ClassLoader) null);
                                }

                                \/**
                            <\/em>     * <\/em>\u6784\u9020\u51fd\u6570\uff0c\u5141\u8bb8\u6307\u5b9a\u7c7b\u52a0\u8f7d\u5668
                            <\/em>     <\/em>* <\/em>@param <\/em><\/strong>path <\/em>\u8d44\u6e90\u8def\u5f84
                            <\/em>     <\/em>* <\/em>@param <\/em><\/strong>classLoader <\/em>\u7c7b\u52a0\u8f7d\u5668\uff0c\u53ef\u4e3a\u7a7a
                            <\/em>     <\/em>*\/
                            <\/em>    <\/em>public ClassPathResource(String path, ClassLoader classLoader) {
                                    \/\/ \u4f7f\u7528 hutool \u63d0\u4f9b\u7684\u65ad\u8a00\u5de5\u5177\uff0c\u786e\u4fdd path \u4e0d\u4e3a null
                                    \/\/ \u5426\u5219\u4f1a\u629b\u51fa IllegalArgumentException\uff0c\u63d0\u793a\u9519\u8bef\u4fe1\u606f
                                    Assert.notNull<\/em>(path, \"Path must not be null\");

                                    this.path = path;

                                    \/\/ \u5982\u679c\u4f20\u5165\u7684 classLoader \u4e3a null\uff0c\u5219\u4f7f\u7528\u9ed8\u8ba4\u7c7b\u52a0\u8f7d\u5668\uff08\u7531 ClassUtils \u63d0\u4f9b\uff09
                                    this.classLoader = (classLoader != null ? classLoader : ClassUtils.getDefaultClassLoader<\/em>());
                                }

                                \/**
                            <\/em>     * <\/em>\u83b7\u53d6\u8d44\u6e90\u7684\u8f93\u5165\u6d41\uff0c\u4f9b\u540e\u7eed\u89e3\u6790\uff08\u4f8b\u5982 <\/em>XML <\/em>\u914d\u7f6e\u89e3\u6790\uff09
                            <\/em>     <\/em>* <\/em>@return <\/em><\/strong>InputStream <\/em>\u8f93\u5165\u6d41
                            <\/em>     <\/em>* <\/em>@throws <\/em><\/strong>IOException <\/em>\u5982\u679c\u627e\u4e0d\u5230\u8d44\u6e90\u5219\u629b\u51fa\u5f02\u5e38
                            <\/em>     <\/em>*\/
                            <\/em>    <\/em>@Override
                                public InputStream getInputStream() throws IOException {
                                    \/\/ \u4f7f\u7528\u7c7b\u52a0\u8f7d\u5668\u4ece classpath \u4e2d\u52a0\u8f7d\u8d44\u6e90\u4e3a\u8f93\u5165\u6d41
                                    InputStream is = classLoader.getResourceAsStream(path);

                                    \/\/ \u5982\u679c\u52a0\u8f7d\u5931\u8d25\uff0c\u8fd4\u56de null\uff0c\u5219\u629b\u51fa\u6587\u4ef6\u672a\u627e\u5230\u5f02\u5e38
                                    if (is == null) {
                                        throw new FileNotFoundException(
                                                this.path + \" cannot be opened because it does not exist\");
                                    }

                                    return is;
                                }
                            }<\/code><\/pre>\n\n\n\n
                            FileSystem<\/strong>\uff1a<\/p>\n\n\n\n
                            \u901a\u8fc7\u6307\u5b9a\u6587\u4ef6\u8def\u5f84\u7684\u65b9\u5f0f\u8bfb\u53d6\u6587\u4ef6\u4fe1\u606f<\/p>\n\n\n\n
                            public class FileSystemResource implements Resource {

                                private final File file;

                                private final String path;

                                public FileSystemResource(File file) {
                                    this.file = file;
                                    this.path = file.getPath();
                                }

                                public FileSystemResource(String path) {
                                    this.file = new File(path);
                                    this.path = path;
                                }

                                @Override
                                public InputStream getInputStream() throws IOException {
                                    return new FileInputStream(this.file);
                                }

                                public final String getPath() {
                                    return this.path;
                                }

                            }<\/code><\/pre>\n\n\n\n
                            Url<\/strong>\uff1a<\/p>\n\n\n\n
                            \u901a\u8fc7 HTTP \u7684\u65b9\u5f0f\u8bfb\u53d6\u4e91\u670d\u52a1\u7684\u6587\u4ef6\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u628a\u914d\u7f6e\u6587\u4ef6\u653e\u5230 GitHub \u6216\u8005 Gitee \u4e0a\u3002<\/p>\n\n\n\n
                            2.\u5305\u88c5\u8d44\u6e90\u52a0\u8f7d\u5668\uff1a<\/h3>\n\n\n\n
                            \u6309\u7167\u8d44\u6e90\u52a0\u8f7d\u7684\u4e0d\u540c\u65b9\u5f0f\uff0c\u8d44\u6e90\u52a0\u8f7d\u5668\u53ef\u4ee5\u628a\u8fd9\u4e9b\u65b9\u5f0f\u96c6\u4e2d\u5230\u7edf\u4e00\u7684\u7c7b\u670d\u52a1\u4e0b\u8fdb\u884c\u5904\u7406\uff0c\u5916\u90e8\u7528\u6237\u53ea\u9700\u8981\u4f20\u9012\u8d44\u6e90\u5730\u5740\u5373\u53ef\uff0c\u7b80\u5316\u4f7f\u7528\u3002<\/p>\n\n\n\n
                            \u5b9a\u4e49\u63a5\u53e3<\/strong>\uff1a<\/p>\n\n\n\n
                            \/**
                            <\/em> * <\/em>\u8d44\u6e90\u52a0\u8f7d\u5668\u63a5\u53e3\uff0c\u5b9a\u4e49\u7edf\u4e00\u7684\u8d44\u6e90\u52a0\u8f7d\u65b9\u5f0f\u3002
                            <\/em> <\/em>* <\/em>\u6846\u67b6\u4e2d\u6240\u6709\u8d44\u6e90\uff08\u5982 <\/em>XML<\/em>\u3001\u914d\u7f6e\u6587\u4ef6\u7b49\uff09\u90fd\u5e94\u901a\u8fc7\u8be5\u63a5\u53e3\u52a0\u8f7d\u3002
                            <\/em> <\/em>*\/
                            <\/em>public interface ResourceLoader {

                                \/**
                            <\/em>     * <\/em>\u7c7b\u8def\u5f84\u524d\u7f00\uff0c\u7528\u4e8e\u8bc6\u522b\u7c7b\u8def\u5f84\u8d44\u6e90\u3002
                            <\/em>     <\/em>* <\/em>\u4f8b\u5982\uff1a<\/em>classpath:application.xml
                            <\/em>     *\/
                            <\/em>    <\/em>String CLASSPATH_URL_PREFIX <\/em>= \"classpath:\";

                                \/**
                            <\/em>     * <\/em>\u6839\u636e\u7ed9\u5b9a\u8def\u5f84 <\/em>location <\/em>\u8fd4\u56de\u5bf9\u5e94\u7684 <\/em>Resource <\/em>\u5b9e\u4f8b\u3002
                            <\/em>     <\/em>* <\/em>\u8def\u5f84\u53ef\u4ee5\u662f\uff1a
                            <\/em>     <\/em>* - classpath:xxx.xml<\/em>\uff08\u7c7b\u8def\u5f84\uff09
                            <\/em>     <\/em>* - file:\/xxx\/xxx.txt<\/em>\uff08\u6587\u4ef6\u7cfb\u7edf\uff09
                            <\/em>     <\/em>* - http:\/\/xxx.com\/xx.properties<\/em>\uff08\u7f51\u7edc\u5730\u5740\uff09
                            <\/em>     <\/em>*
                            <\/em>     * <\/em>@param <\/em><\/strong>location <\/em>\u8d44\u6e90\u4f4d\u7f6e\u5b57\u7b26\u4e32
                            <\/em>     <\/em>* <\/em>@return <\/em><\/strong>\u5c01\u88c5\u540e\u7684 <\/em>Resource <\/em>\u5bf9\u8c61\uff08\u53ef\u8fdb\u4e00\u6b65\u8bfb\u53d6 <\/em>InputStream<\/em>\uff09
                            <\/em>     <\/em>*\/
                            <\/em>    <\/em>Resource getResource(String location);
                            }<\/code><\/pre>\n\n\n\n
                            \u5b9e\u73b0\u63a5\u53e3<\/strong>\uff1a<\/p>\n\n\n\n
                            public class DefaultResourceLoader implements ResourceLoader {\n\n    @Override\n    public Resource getResource(String location) {\n        Assert.notNull<\/em>(location, \"Location must not be null\");\n\n        if (isClasspathResource(location)) {\n            return getClasspathResource(location);\n        }\n\n        if (isUrl(location)) {\n            return getUrlResource(location);\n        }\n\n        return getFileSystemResource(location);\n    }\n\n    private boolean isClasspathResource(String location) {\n        return location.startsWith(CLASSPATH_URL_PREFIX<\/em>);\n    }\n\n    private Resource getClasspathResource(String location) {\n        String path = location.substring(CLASSPATH_URL_PREFIX<\/em>.length());\n        return new ClassPathResource(path);\n    }\n\n    private boolean isUrl(String location) {\n        try {\n            new URL(location);\n            return true;\n        } catch (MalformedURLException e) {\n            return false;\n        }\n    }\n\n    private Resource getUrlResource(String location) {\n        try {\n            URL url = new URL(location);\n            return new UrlResource(url);\n        } catch (MalformedURLException e) {\n            \n            \/\/ \u7406\u8bba\u4e0a\u8fd9\u91cc\u4e0d\u4f1a\u5f02\u5e38\uff0c\u56e0\u4e3a\u5df2\u7ecf\u5224\u65ad\u8fc7\u4e86\n            throw new IllegalArgumentException(\"Invalid URL: \" + location, e);\n        }\n    }\n\n    private Resource getFileSystemResource(String location) {\n        return new FileSystemResource(location);\n    }\n}<\/code><\/pre>\n\n\n\n
                            3. Bean\u5b9a\u4e49\u8bfb\u53d6\u63a5\u53e3<\/h3>\n\n\n\n
                            \/**\n * BeanDefinitionReader \u662f\u8d1f\u8d23\u8bfb\u53d6 Bean \u5b9a\u4e49\u7684\u63a5\u53e3\uff0c\n * \u5176\u6838\u5fc3\u529f\u80fd\u662f\u4ece\u5404\u79cd\u8d44\u6e90\u4e2d\u52a0\u8f7d Bean \u7684\u914d\u7f6e\u4fe1\u606f\uff0c\n * \u5e76\u5c06 BeanDefinition \u6ce8\u518c\u5230 BeanDefinitionRegistry \u4e2d\u3002\n *\/\n<\/em>public interface BeanDefinitionReader {\n\n    \/**\n     * \u83b7\u53d6\u6ce8\u518c BeanDefinition \u7684\u6ce8\u518c\u8868\n     * <\/em>@return <\/em><\/strong>BeanDefinitionRegistry \u5b9e\u4f8b\n     *\/\n    <\/em>BeanDefinitionRegistry getRegistry();\n\n    \/**\n     * \u83b7\u53d6\u8d44\u6e90\u52a0\u8f7d\u5668\uff0c\u8d1f\u8d23\u5b9a\u4f4d\u548c\u52a0\u8f7d\u8d44\u6e90\u6587\u4ef6\n     * <\/em>@return <\/em><\/strong>ResourceLoader \u5b9e\u4f8b\n     *\/\n    <\/em>ResourceLoader getResourceLoader();\n\n    \/**\n     * \u4ece\u5355\u4e2a Resource\uff08\u8d44\u6e90\uff09\u4e2d\u52a0\u8f7d Bean \u5b9a\u4e49\n     * <\/em>@param <\/em><\/strong>resource \u8d44\u6e90\u5bf9\u8c61\uff0c\u5982 classpath \u4e0b\u7684 XML \u914d\u7f6e\u6587\u4ef6\n     * <\/em>@throws <\/em><\/strong>BeansException \u52a0\u8f7d\u5f02\u5e38\n     *\/\n    <\/em>void loadBeanDefinitions(Resource resource) throws BeansException;\n\n    \/**\n     * \u4ece\u591a\u4e2a Resource\uff08\u8d44\u6e90\uff09\u4e2d\u6279\u91cf\u52a0\u8f7d Bean \u5b9a\u4e49\n     * <\/em>@param <\/em><\/strong>resources \u8d44\u6e90\u6570\u7ec4\uff08\u53ef\u53d8\u53c2\u6570\uff09\uff0c\u652f\u6301\u4f20\u5165\u591a\u4e2a Resource\n     * <\/em>@throws <\/em><\/strong>BeansException \u52a0\u8f7d\u5f02\u5e38\n     *\/\n    <\/em>void loadBeanDefinitions(Resource... resources) throws BeansException;\n\n    \/**\n     * \u4ece\u8d44\u6e90\u8def\u5f84\u5b57\u7b26\u4e32\uff08location\uff09\u52a0\u8f7d Bean \u5b9a\u4e49\n     * <\/em>@param <\/em><\/strong>location \u8d44\u6e90\u8def\u5f84\uff0c\u5982 \"classpath:beans.xml\"\n     * <\/em>@throws <\/em><\/strong>BeansException \u52a0\u8f7d\u5f02\u5e38\n     *\/\n    <\/em>void loadBeanDefinitions(String location) throws BeansException;\n\n     \/**\n     * \u4ece\u591a\u4e2a\u8d44\u6e90\u8def\u5f84\u5b57\u7b26\u4e32\uff08location\uff09\u6279\u91cf\u52a0\u8f7d Bean \u5b9a\u4e49\n     * @param locations \u8d44\u6e90\u8def\u5f84\u6570\u7ec4\uff08\u53ef\u53d8\u53c2\u6570\uff09\uff0c\u652f\u6301\u4f20\u5165\u591a\u4e2a Resource\n     * @throws BeansException \u52a0\u8f7d\u5f02\u5e38\n     *\/\n    void loadBeanDefinitions(String... locations) throws BeansException;\n\n}<\/code><\/pre>\n\n\n\n
                            \u53e6\u5916\uff1aResource... resources<\/code> \u662f\u7528\u6cd5\uff1f<\/p>\n\n\n\n
                              \n
                            • Resource... resources<\/code> \u662f Java \u4e2d\u7684**\u53ef\u53d8\u53c2\u6570\uff08varargs\uff09**\u8bed\u6cd5\uff0c\u8868\u793a\u8be5\u65b9\u6cd5\u53ef\u4ee5\u63a5\u6536\u4efb\u610f\u6570\u91cf\u7684 Resource<\/code> \u5bf9\u8c61\uff0c\u751a\u81f3\u53ef\u4ee5\u4e0d\u4f20\u3002<\/li>\n\n\n\n
                            • \u8c03\u7528\u65f6\u53ef\u4ee5\u8fd9\u6837\u7528\uff1a<\/li>\n<\/ul>\n\n\n\n
                              java\u590d\u5236\u7f16\u8f91loadBeanDefinitions(res1);\nloadBeanDefinitions(res1, res2, res3);\nloadBeanDefinitions();  \/\/ \u4f20\u7a7a\u53c2\u6570\u4e5f\u5408\u6cd5\uff08\u5177\u4f53\u770b\u5b9e\u73b0\uff09\n<\/code><\/pre>\n\n\n\n
                              \u7f16\u8bd1\u5668\u4f1a\u628a\u53ef\u53d8\u53c2\u6570\u5f53\u6210\u6570\u7ec4\u5904\u7406\uff0c\u65b9\u6cd5\u5185\u90e8\u53ef\u4ee5\u50cf\u5904\u7406\u6570\u7ec4\u4e00\u6837\u8bbf\u95ee resources<\/code>\u3002<\/p>\n\n\n\n
                              4.Bean\u5b9a\u4e49\u62bd\u8c61\u7c7b\u5b9e\u73b0<\/h3>\n\n\n\n
                              \u5c0f\u77e5\u8bc6\u70b9\uff1a\u62bd\u8c61\u7c7b\u5b9e\u73b0\u63a5\u53e3\u53ef\u4ee5\u4e0d\u5168\u90e8\u5b9e\u73b0\u3002<\/p>\n\n\n\n
                              public abstract class AbstractBeanDefinitionReader implements BeanDefinitionReader {\n\n    private final BeanDefinitionRegistry registry;\n\n    private ResourceLoader resourceLoader;\n\n    protected AbstractBeanDefinitionReader(BeanDefinitionRegistry registry) {\n        this(registry, new DefaultResourceLoader());\n    }\n\n    public AbstractBeanDefinitionReader(BeanDefinitionRegistry registry, ResourceLoader resourceLoader) {\n        this.registry = registry;\n        this.resourceLoader = resourceLoader;\n    }\n\n    @Override\n    public BeanDefinitionRegistry getRegistry() {\n        return registry;\n    }\n\n    @Override\n    public ResourceLoader getResourceLoader() {\n        return resourceLoader;\n    }\n\n}<\/code><\/pre>\n\n\n\n
                              \u62bd\u8c61\u7c7b\u628a BeanDefinitionReader \u63a5\u53e3\u7684\u524d\u4e24\u4e2a\u65b9\u6cd5\u5168\u90e8\u5b9e\u73b0\u5b8c\u4e86\uff0c\u5e76\u63d0\u4f9b\u4e86\u6784\u9020\u51fd\u6570\uff0c\u8ba9\u5916\u90e8\u7684\u8c03\u7528\u4f7f\u7528\u65b9\uff0c\u628aBean\u5b9a\u4e49\u6ce8\u5165\u7c7b\u4f20\u9012\u8fdb\u6765\u3002<\/p>\n\n\n\n
                              5.\u8865\u5145containsBeanDefinition\uff1a<\/h3>\n\n\n\n
                              \u5728BeanDefinitionRegistry\u8fd9\u4e2a\u63a5\u53e3\u4e2d\u6dfb\u52a0\u5b9a\u4e49\uff1a<\/p>\n\n\n\n
                              \/**
                              <\/em> * <\/em>\u5224\u65ad\u662f\u5426\u5305\u542b\u6307\u5b9a\u540d\u79f0\u7684<\/em>BeanDefinition
                              <\/em> * <\/em>@param <\/em><\/strong>beanName
                              <\/em> <\/em>* <\/em>@return
                              <\/em><\/strong> <\/em><\/strong>*\/
                              <\/em>boolean containsBeanDefinition(String beanName);<\/code><\/pre>\n\n\n\n
                              \u5728\u5b9e\u73b0\u7c7bDefaultListableBeanFactory\u4e2d\u5b9e\u73b0\uff1a<\/p>\n\n\n\n
                              @Override
                              public boolean containsBeanDefinition(String beanName) {
                              return beanDefinitionMap.containsKey(beanName);
                              }<\/code><\/pre>\n\n\n\n
                              <\/p>\n\n\n\n
                              6.\u5b9e\u73b0\u89e3\u6790XML\u5904\u7406Bean\u6ce8\u518c\u7c7b\uff1a<\/h3>\n\n\n\n
                              \/**\n * XmlBeanDefinitionReader \u7ee7\u627f\u81ea AbstractBeanDefinitionReader\uff0c\n * \u8d1f\u8d23\u4ece XML \u8d44\u6e90\u4e2d\u8bfb\u53d6\u5e76\u89e3\u6790 Bean \u5b9a\u4e49\u4fe1\u606f\uff0c\n * \u7136\u540e\u6ce8\u518c\u5230 BeanDefinitionRegistry \u4e2d\u3002\n *\/\npublic class XmlBeanDefinitionReader extends AbstractBeanDefinitionReader {\n\n    \/**\n     * \u6784\u9020\u51fd\u6570\uff0c\u53ea\u4f20\u5165 BeanDefinition \u6ce8\u518c\u8868\uff0c\u4f7f\u7528\u9ed8\u8ba4\u8d44\u6e90\u52a0\u8f7d\u5668\n     * @param registry BeanDefinition \u6ce8\u518c\u8868\n     *\/\n    public XmlBeanDefinitionReader(BeanDefinitionRegistry registry) {\n        super(registry);\n    }\n\n    \/**\n     * \u6784\u9020\u51fd\u6570\uff0c\u4f20\u5165 BeanDefinition \u6ce8\u518c\u8868\u548c\u8d44\u6e90\u52a0\u8f7d\u5668\n     * @param registry BeanDefinition \u6ce8\u518c\u8868\n     * @param resourceLoader \u8d44\u6e90\u52a0\u8f7d\u5668\n     *\/\n    public XmlBeanDefinitionReader(BeanDefinitionRegistry registry, ResourceLoader resourceLoader) {\n        super(registry, resourceLoader);\n    }\n\n    \/**\n     * \u4ece\u5355\u4e2a Resource \u8d44\u6e90\u4e2d\u52a0\u8f7d Bean \u5b9a\u4e49\n     * @param resource \u8d44\u6e90\uff0c\u5982 classpath \u4e0b\u7684 XML \u6587\u4ef6\n     * @throws BeansException \u52a0\u8f7d\u6216\u89e3\u6790\u5f02\u5e38\n     *\/\n    @Override\n    public void loadBeanDefinitions(Resource resource) throws BeansException {\n        try {\n            \/\/ \u901a\u8fc7 try-with-resources \u81ea\u52a8\u5173\u95ed\u8f93\u5165\u6d41\n            try (InputStream inputStream = resource.getInputStream()) {\n                \/\/ \u59d4\u6258\u7ed9\u5177\u4f53\u7684\u52a0\u8f7d\u65b9\u6cd5\u8fdb\u884c XML \u89e3\u6790\n                doLoadBeanDefinitions(inputStream);\n            }\n        } catch (IOException | ClassNotFoundException e) {\n            \/\/ \u5305\u88c5\u5f02\u5e38\uff0c\u629b\u51fa\u81ea\u5b9a\u4e49 BeansException\n            throw new BeansException(\"IOException parsing XML document from \" + resource, e);\n        }\n    }\n\n    \/**\n     * \u6279\u91cf\u4ece\u591a\u4e2a Resource \u8d44\u6e90\u4e2d\u52a0\u8f7d Bean \u5b9a\u4e49\n     * @param resources \u591a\u4e2a\u8d44\u6e90\u6570\u7ec4\uff08\u53ef\u53d8\u53c2\u6570\uff09\n     * @throws BeansException \u52a0\u8f7d\u5f02\u5e38\n     *\/\n    @Override\n    public void loadBeanDefinitions(Resource... resources) throws BeansException {\n        for (Resource resource : resources) {\n            \/\/ \u5faa\u73af\u8c03\u7528\u5355\u4e2a\u8d44\u6e90\u52a0\u8f7d\u65b9\u6cd5\n            loadBeanDefinitions(resource);\n        }\n    }\n\n    \/**\n     * \u901a\u8fc7\u8d44\u6e90\u8def\u5f84\u5b57\u7b26\u4e32\u52a0\u8f7d Bean \u5b9a\u4e49\n     * @param location \u8d44\u6e90\u8def\u5f84\uff0c\u5982 \"classpath:beans.xml\"\n     * @throws BeansException \u52a0\u8f7d\u5f02\u5e38\n     *\/\n    @Override\n    public void loadBeanDefinitions(String location) throws BeansException {\n        ResourceLoader resourceLoader = getResourceLoader();\n        \/\/ \u4f7f\u7528\u8d44\u6e90\u52a0\u8f7d\u5668\u5c06\u8def\u5f84\u8f6c\u6210 Resource \u5bf9\u8c61\n        Resource resource = resourceLoader.getResource(location);\n        \/\/ \u8c03\u7528 Resource \u7248\u672c\u7684\u52a0\u8f7d\u65b9\u6cd5\n        loadBeanDefinitions(resource);\n    }\n\n\/**\n     * \u6279\u91cf\u4ece\u591a\u4e2a\u8d44\u6e90\u8def\u5f84\u5b57\u7b26\u4e32\u4e2d\u52a0\u8f7d Bean \u5b9a\u4e49\n     * @param locations \u591a\u4e2a\u8d44\u6e90\u8def\u5f84\u5b57\u7b26\u4e32\u6570\u7ec4\n     * @throws BeansException \u52a0\u8f7d\u5f02\u5e38\n     *\/\n    @Override\n    public void loadBeanDefinitions(String... locations) throws BeansException {\n        for (String location : locations) {\n            loadBeanDefinitions(location);\n        }\n    }\n\n    \/**\n     * \u89e3\u6790 XML \u8f93\u5165\u6d41\uff0c\u8bfb\u53d6 Bean \u5b9a\u4e49\u4fe1\u606f\u5e76\u6ce8\u518c\n     * @param inputStream XML \u914d\u7f6e\u6587\u4ef6\u8f93\u5165\u6d41\n     * @throws ClassNotFoundException \u627e\u4e0d\u5230\u6307\u5b9a\u7c7b\u5f02\u5e38\n     *\/\n    protected void doLoadBeanDefinitions(InputStream inputStream) throws ClassNotFoundException {\n        \/\/ \u89e3\u6790 XML \u6587\u6863\n        Document doc = XmlUtil.readXML(inputStream);\n        Element root = doc.getDocumentElement();\n        NodeList childNodes = root.getChildNodes();\n\n        \/\/ \u904d\u5386\u6839\u8282\u70b9\u7684\u6240\u6709\u5b50\u8282\u70b9\n        for (int i = 0; i < childNodes.getLength(); i++) {\n            \/\/ \u8fc7\u6ee4\u975e Element \u7c7b\u578b\u8282\u70b9\n            if (!(childNodes.item(i) instanceof Element)) continue;\n            \/\/ \u53ea\u5904\u7406 <bean> \u6807\u7b7e\n            if (!\"bean\".equals(childNodes.item(i).getNodeName())) continue;\n\n            \/\/ \u5f3a\u8f6c\u6210 Element \u65b9\u4fbf\u64cd\u4f5c\n            Element bean = (Element) childNodes.item(i);\n            \/\/ \u83b7\u53d6 bean \u7684 id\u3001name\u3001class \u5c5e\u6027\n            String id = bean.getAttribute(\"id\");\n            String name = bean.getAttribute(\"name\");\n            String className = bean.getAttribute(\"class\");\n\n            \/\/ \u52a0\u8f7d bean \u5bf9\u5e94\u7684 Class \u5bf9\u8c61\n            Class<?> clazz = Class.forName(className);\n\n            \/\/ \u786e\u5b9a bean \u540d\u79f0\uff0c\u4f18\u5148\u4f7f\u7528 id\uff0c\u518d\u4f7f\u7528 name\uff0c\u6700\u540e\u9ed8\u8ba4\u4f7f\u7528\u7c7b\u540d\u9996\u5b57\u6bcd\u5c0f\u5199\n            String beanName = StrUtil.isNotEmpty(id) ? id : name;\n            if (StrUtil.isEmpty(beanName)) {\n                beanName = StrUtil.lowerFirst(clazz.getSimpleName());\n            }\n\n            \/\/ \u521b\u5efa BeanDefinition\uff0c\u4fdd\u5b58 Class \u4fe1\u606f\n            BeanDefinition beanDefinition = new BeanDefinition(clazz);\n\n            \/\/ \u89e3\u6790 <property> \u5b50\u6807\u7b7e\uff0c\u586b\u5145 Bean \u5c5e\u6027\u4fe1\u606f\n            for (int j = 0; j < bean.getChildNodes().getLength(); j++) {\n                if (!(bean.getChildNodes().item(j) instanceof Element)) continue;\n                if (!\"property\".equals(bean.getChildNodes().item(j).getNodeName())) continue;\n\n                Element property = (Element) bean.getChildNodes().item(j);\n                String attrName = property.getAttribute(\"name\");\n                String attrValue = property.getAttribute(\"value\");\n                String attrRef = property.getAttribute(\"ref\");\n\n                \/\/ \u5224\u65ad\u5c5e\u6027\u503c\u662f\u666e\u901a\u503c\u8fd8\u662f\u5f15\u7528\u5176\u4ed6 Bean\n                Object value = StrUtil.isNotEmpty(attrRef) ? new BeanReference(attrRef) : attrValue;\n\n                \/\/ \u521b\u5efa PropertyValue \u5bf9\u8c61\uff0c\u5c01\u88c5\u5c5e\u6027\u540d\u548c\u503c\n                PropertyValue propertyValue = new PropertyValue(attrName, value);\n                \/\/ \u6dfb\u52a0\u5230 BeanDefinition \u4e2d\u7684\u5c5e\u6027\u96c6\u5408\n                beanDefinition.getPropertyValues().addPropertyValue(propertyValue);\n            }\n\n            \/\/ \u5224\u65ad\u662f\u5426\u6709\u91cd\u590d BeanName\uff0c\u9632\u6b62\u8986\u76d6\n            if (getRegistry().containsBeanDefinition(beanName)) {\n                throw new BeansException(\"Duplicate beanName[\" + beanName + \"] is not allowed\");\n            }\n\n            \/\/ \u6ce8\u518c BeanDefinition \u5230\u6ce8\u518c\u8868\u4e2d\n            getRegistry().registerBeanDefinition(beanName, beanDefinition);\n        }\n    }<\/code><\/pre>\n\n\n\n
                              7.\u5176\u5b83\u8865\u5145\u548c\u4f18\u5316\uff1a<\/h3>\n\n\n\n
                              BeanFactory\uff1a<\/h4>\n\n\n\n
                              \u6dfb\u52a0\uff1a<\/p>\n\n\n\n
                              <T> T getBean(String name, Class<T> requiredType) throws BeansException;<\/code><\/pre>\n\n\n\n
                              ListableBeanFactory\uff0c\u662f\u4e00\u4e2a\u6269\u5c55 Bean \u5de5\u5382\u63a5\u53e3\u7684\u63a5\u53e3\uff1a<\/h4>\n\n\n\n
                              \/**\n * \t\u5728\u53ea\u6709getBean()\u7684BeanFactory\u57fa\u7840\u4e0a\uff0c\u589e\u52a0\u4e86\u6279\u91cf\u67e5\u8be2\u548c\u5217\u51fa\u6240\u6709 Bean \u7684\u529f\u80fd\n *\/\npublic interface ListableBeanFactory extends BeanFactory{\n\n    \/**\n     * \u6309\u7167\u7c7b\u578b\u8fd4\u56de Bean \u5b9e\u4f8b\n     * <\/em>@param <\/em><\/strong>type\n     * <\/em>@param <\/em><\/strong><T<\/em>>\n     * <\/em>@return\n     <\/em><\/strong>* <\/em>@throws <\/em><\/strong>BeansException\n     *\/\n    <\/em><T> Map<String, T> getBeansOfType(Class<T> type) throws BeansException;\n\n    \/**\n     * Return the names of all beans defined in this registry.\n     *\n     * \u8fd4\u56de\u6ce8\u518c\u8868\u4e2d\u6240\u6709\u7684Bean\u540d\u79f0\n     *\/\n    <\/em>String[] getBeanDefinitionNames();\n}<\/code><\/pre>\n\n\n\n
                              HierarchicalBeanFactory\uff1a\u63d0\u4f9b\u4e86\u53ef\u4ee5\u83b7\u53d6\u7236\u7c7b BeanFactory \u65b9\u6cd5<\/h4>\n\n\n\n
                              \/**\n * \u7531\u53ef\u4ee5\u6210\u4e3a\u5c42\u7ea7\u7ed3\u6784\u4e00\u90e8\u5206\u7684 BeanFactory \u5b9e\u73b0\u7684\u5b50\u63a5\u53e3\n *\/\n<\/em>public interface HierarchicalBeanFactory extends BeanFactory{\n}<\/code><\/pre>\n\n\n\n
                              ConfigurableBeanFactory\uff0c\u53ef\u83b7\u53d6 BeanPostProcessor\u3001BeanClassLoader\u7b49\u7684\u4e00\u4e2a\u914d\u7f6e\u5316\u63a5\u53e3\uff1a<\/h4>\n\n\n\n
                              \/**
                              <\/em> * <\/em>\u914d\u7f6e\u578b <\/em>Bean <\/em>\u5de5\u5382\u63a5\u53e3\uff0c\u901a\u5e38\u7531\u5927\u591a\u6570 <\/em>BeanFactory <\/em>\u5b9e\u73b0\u3002
                              <\/em> <\/em>*
                              <\/em> * <\/em>\u5b83\u5728 <\/em>BeanFactory <\/em>\u7684\u57fa\u7840\u4e0a\uff0c\u6269\u5c55\u4e86\u5bf9 <\/em>Bean <\/em>\u5de5\u5382\u7684\u914d\u7f6e\u80fd\u529b\uff0c\u4f8b\u5982\uff1a
                              <\/em> <\/em>* - <\/em>\u8bbe\u7f6e\u4f5c\u7528\u57df\uff08<\/em>singleton \/ prototype<\/em>\uff09
                              <\/em> <\/em>* - <\/em>\u6ce8\u518c\u5355\u4f8b <\/em>Bean
                              <\/em> * - <\/em>\u652f\u6301\u5c42\u7ea7\u7ed3\u6784\uff08\u7236\u5b50\u5bb9\u5668\uff09
                              <\/em> <\/em>*
                              <\/em> * <\/em>\u7ee7\u627f\u4e86\uff1a
                              <\/em> <\/em>* - HierarchicalBeanFactory<\/em>\uff1a\u63d0\u4f9b\u7236\u5bb9\u5668\u652f\u6301\uff0c\u53ef\u901a\u8fc7 <\/em>getParentBeanFactory() <\/em>\u83b7\u53d6\u7236\u5bb9\u5668\u3002
                              <\/em> <\/em>* - SingletonBeanRegistry<\/em>\uff1a\u5141\u8bb8\u624b\u52a8\u6ce8\u518c<\/em>\/<\/em>\u83b7\u53d6\u5355\u4f8b\u5bf9\u8c61\u3002
                              <\/em> <\/em>*\/
                              <\/em>public interface ConfigurableBeanFactory extends HierarchicalBeanFactory, SingletonBeanRegistry {

                                  \/** <\/em>\u5355\u4f8b\u4f5c\u7528\u57df\uff1a\u5bb9\u5668\u4e2d\u53ea\u521b\u5efa\u4e00\u4e2a\u5171\u4eab\u7684 <\/em>Bean <\/em>\u5b9e\u4f8b <\/em>*\/
                              <\/em>    <\/em>String SCOPE_SINGLETON <\/em>= \"singleton\";

                                  \/** <\/em>\u539f\u578b\u4f5c\u7528\u57df\uff1a\u6bcf\u6b21\u83b7\u53d6 <\/em>Bean <\/em>\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5b9e\u4f8b <\/em>*\/
                              <\/em>    <\/em>String SCOPE_PROTOTYPE <\/em>= \"prototype\";

                              }<\/code><\/pre>\n\n\n\n
                              AutowireCapableBeanFactory\uff0c\u662f\u4e00\u4e2a\u81ea\u52a8\u5316\u5904\u7406Bean\u5de5\u5382\u914d\u7f6e\u7684\u63a5\u53e3\uff0c\u76ee\u524d\u6848\u4f8b\u5de5\u7a0b\u4e2d\u8fd8\u6ca1\u6709\u505a\u76f8\u5e94\u7684\u5b9e\u73b0\uff0c\u540e\u7eed\u9010\u6b65\u5b8c\u5584\uff1a<\/h4>\n\n\n\n
                              \/**\n * AutowireCapableBeanFactory\uff08\u81ea\u52a8\u88c5\u914d\u80fd\u529b\u7684 Bean \u5de5\u5382\uff09\n *\n * \u8fd9\u662f beans.factory.BeanFactory \u7684\u6269\u5c55\u63a5\u53e3\uff0c\n * \u7528\u4e8e\u5177\u5907\u201c\u81ea\u52a8\u88c5\u914d\u73b0\u6709 Bean \u5b9e\u4f8b\u201d\u80fd\u529b\u7684\u5de5\u5382\u3002\n *\n * \u901a\u5e38\u7528\u4e8e\uff1a\n * - \u5c06\u4e00\u4e2a**\u5df2\u7ecf\u5b58\u5728\u7684\u5bf9\u8c61**\uff08\u4e0d\u662f\u5bb9\u5668\u521b\u5efa\u7684\uff09\u6ce8\u5165\u5176\u4f9d\u8d56\u9879\uff08\u5c5e\u6027\u3001\u6ce8\u89e3\u7b49\uff09\u3002\n * - \u5728\u8fd0\u884c\u65f6\u5bf9\u5bf9\u8c61\u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u3001\u751f\u547d\u5468\u671f\u7ba1\u7406\uff08\u5982\u8c03\u7528\u521d\u59cb\u5316\u65b9\u6cd5\uff09\u3002\n *\n * \u4e3e\u4f8b\u573a\u666f\uff1a\n * - \u624b\u52a8 new \u51fa\u4e00\u4e2a\u5bf9\u8c61\uff0c\u7136\u540e\u4ea4\u7ed9 Spring \u53bb\u5b8c\u6210\u4f9d\u8d56\u6ce8\u5165\uff08\u800c\u4e0d\u662f\u7531\u5bb9\u5668\u521b\u5efa\uff09\n *\n * \u5728 Spring \u4e2d\u7684\u5b9e\u73b0\u7c7b\uff1a\n * - DefaultListableBeanFactory \u5c31\u5b9e\u73b0\u4e86\u8fd9\u4e2a\u63a5\u53e3\u3002\n *\/\npublic interface AutowireCapableBeanFactory extends BeanFactory {\n}<\/code><\/pre>\n\n\n\n
                              ConfigurableListableBeanFactory\uff0c\u63d0\u4f9b\u5206\u6790\u548c\u4fee\u6539Bean\u4ee5\u53ca\u9884\u5148\u5b9e\u4f8b\u5316\u7684\u64cd\u4f5c\u63a5\u53e3\uff0c\u4e0d\u8fc7\u76ee\u524d\u53ea\u6709\u4e00\u4e2a getBeanDefinition \u65b9\u6cd5\uff1a<\/h4>\n\n\n\n
                              \/**\n * \u53ef\u914d\u7f6e\u4e14\u53ef\u5217\u4e3e\u7684 Bean \u5de5\u5382\u63a5\u53e3\u3002\n *\n * \u6b64\u63a5\u53e3\u901a\u5e38\u7531\u652f\u6301\u5217\u51fa\u6240\u6709 Bean \u5b9a\u4e49\u7684 Bean \u5de5\u5382\u5b9e\u73b0\u3002\n * \u76f8\u8f83\u4e8e {@link ConfigurableBeanFactory}\uff0c\u5b83\u8fd8\u63d0\u4f9b\u4e86\u5206\u6790\u548c\u4fee\u6539 BeanDefinition\u3001\n * \u4ee5\u53ca\u9884\u5b9e\u4f8b\u5316\u5355\u4f8b Bean \u7684\u80fd\u529b\u3002\n *\n * Spring \u5bb9\u5668\u5237\u65b0\uff08refresh\uff09\u8fc7\u7a0b\u4e2d\uff0c\u901a\u5e38\u4f1a\u7528\u8fd9\u4e2a\u63a5\u53e3\u5bf9 BeanDefinition \u505a\u7edf\u4e00\u5904\u7406\u3002\n *\/\npublic interface ConfigurableListableBeanFactory\n        extends ListableBeanFactory,                   \/\/ \u53ef\u4ee5\u6309\u7c7b\u578b\u3001\u540d\u79f0\u5217\u51fa Bean\n        AutowireCapableBeanFactory,                     \/\/ \u63d0\u4f9b\u81ea\u52a8\u88c5\u914d\u5df2\u5b58\u5728\u5bf9\u8c61\u7684\u80fd\u529b\n        ConfigurableBeanFactory {                       \/\/ \u63d0\u4f9b\u4f5c\u7528\u57df\u3001\u81ea\u5b9a\u4e49\u7c7b\u578b\u8f6c\u6362\u5668\u3001\u6ce8\u518c\u94a9\u5b50\u7b49\u80fd\u529b\n\n    \/**\n     * \u83b7\u53d6\u6307\u5b9a\u540d\u79f0\u7684 BeanDefinition \u5bf9\u8c61\u3002\n     * \n     * @param beanName Bean \u7684\u540d\u79f0\n     * @return BeanDefinition \u5b9a\u4e49\u4fe1\u606f\uff08\u5982\uff1aclass\u3001\u4f5c\u7528\u57df\u3001\u4f9d\u8d56\u5c5e\u6027\u7b49\uff09\n     * @throws BeansException \u5982\u679c\u672a\u627e\u5230\u5bf9\u5e94\u7684\u5b9a\u4e49\n     *\/\n    BeanDefinition getBeanDefinition(String beanName) throws BeansException;\n\n}<\/code><\/pre>\n\n\n\n
                              DefaultListableBeanFactory\u5b9e\u73b0ConfigurableListableBeanFactory\u63a5\u53e3<\/h4>\n\n\n\n
                              \u6dfb\u52a0\u4e86\uff1a<\/p>\n\n\n\n
                              \/**\n     * \u6839\u636e\u6307\u5b9a\u7c7b\u578b\u83b7\u53d6\u6240\u6709\u5339\u914d\u7684Bean\u5b9e\u4f8b\u6620\u5c04\n     *\n     * @param type \u8981\u83b7\u53d6\u7684Bean\u7c7b\u578b\n     * @param <T>  \u7c7b\u578b\u53c2\u6570\uff0c\u9650\u5b9a\u8fd4\u56de\u503c\u7684\u7c7b\u578b\n     * @return \u5305\u542b\u6240\u6709\u5339\u914d\u7c7b\u578bBean\u7684Map\uff0c\u952e\u4e3aBean\u540d\u79f0\uff0c\u503c\u4e3aBean\u5b9e\u4f8b\n     * @throws BeansException \u5f53\u83b7\u53d6Bean\u8fc7\u7a0b\u4e2d\u53d1\u751f\u5f02\u5e38\u65f6\u629b\u51fa\n     *\/\n    @Override\n    public <T> Map<String, T> getBeansOfType(Class<T> type) throws BeansException {\n        \/\/ \u521b\u5efa\u7528\u4e8e\u5b58\u50a8\u7ed3\u679c\u7684Map\n        Map<String, T> result = new HashMap<>();\n\n        \/\/ \u904d\u5386\u6240\u6709\u5df2\u6ce8\u518c\u7684Bean\u5b9a\u4e49\n        beanDefinitionMap.forEach((beanName, beanDefinition) -> {\n            \/\/ \u83b7\u53d6\u5f53\u524dBean\u5b9a\u4e49\u5bf9\u5e94\u7684Class\u5bf9\u8c61\n            Class beanClass = beanDefinition.getBeanClass();\n\n            \/\/ \u5224\u65ad\u5f53\u524dBean\u7684\u7c7b\u578b\u662f\u5426\u4e0e\u76ee\u6807\u7c7b\u578b\u517c\u5bb9\n            \/\/ isAssignableFrom()\u65b9\u6cd5\u7528\u4e8e\u5224\u65ad\u5f53\u524dClass\u5bf9\u8c61\u6240\u8868\u793a\u7684\u7c7b\u6216\u63a5\u53e3\u662f\u5426\u4e0e\u6307\u5b9a\u7684Class\u53c2\u6570\u8868\u793a\u7684\u7c7b\u6216\u63a5\u53e3\u76f8\u540c\uff0c\u6216\u662f\u5426\u662f\u5176\u8d85\u7c7b\/\u8d85\u63a5\u53e3\n            \/\/ \u5373\uff1atype\u662f\u5426\u662fbeanClass\u7684\u7236\u7c7b\/\u7236\u63a5\u53e3\uff0c\u6216\u8005\u4e24\u8005\u662f\u540c\u4e00\u4e2a\u7c7b\n            if (type.isAssignableFrom(beanClass)) {\n                result.put(beanName, (T) getBean(beanName));\n            }\n        });\n\n        return result;\n    }<\/code><\/pre>\n\n\n\n
                              AbstractBeanFactory\uff1a<\/h4>\n\n\n\n
                              \u5b9e\u73b0getBean\u6cdb\u578b\u91cd\u8f7d\uff0c\u88abDefaultListableBeanFactory\u7ee7\u627f\u3002<\/p>\n\n\n\n
                              @Override
                              public <T> T getBean(String name, Class<T> requiredType) throws BeansException {
                                  return (T) getBean(name);
                              }<\/code><\/pre>\n\n\n\n
                              \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
                              \u914d\u7f6e\u6587\u4ef6\uff1a<\/p>\n\n\n\n
                              important.properties<\/strong>\uff1a\u7528\u4e8e\u6d4b\u8bd5\u8d44\u6e90\u52a0\u8f7d\u5668<\/p>\n\n\n\n
                              # Config File\nsystem.key=OLpj9823dZ\n<\/code><\/pre>\n\n\n\n
                              spring.xml<\/strong>\uff1a\u7528\u4e8e\u6d4b\u8bd5\u6574\u4f53\u7684 Bean \u6ce8\u518c\u529f\u80fd<\/p>\n\n\n\n
                              <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<beans>\n\n    <bean id=\"userDao\" class=\"cn.bugstack.springframework.test.bean.UserDao\"\/>\n\n    <bean id=\"userService\" class=\"cn.bugstack.springframework.test.bean.UserService\">\n        <property name=\"uId\" value=\"10001\"\/>\n        <property name=\"userDao\" ref=\"userDao\"\/>\n    <\/bean>\n\n<\/beans>\n<\/code><\/pre>\n\n\n\n
                              1.\u5355\u5143\u6d4b\u8bd5(\u8d44\u6e90\u52a0\u8f7d)\uff1a<\/p>\n\n\n\n
                              private DefaultResourceLoader resourceLoader;      \n\n@Before\npublic void init() {\n    resourceLoader = new DefaultResourceLoader();\n}   \n\n@Test\npublic void test_classpath() throws IOException {\n    Resource resource = resourceLoader.getResource(\"classpath:important.properties\");\n    InputStream inputStream = resource.getInputStream();\n    String content = IoUtil.readUtf8(inputStream);\n    System.out.println(content);\n}   \n\n@Test\npublic void test_file() throws IOException {\n    Resource resource = resourceLoader.getResource(\"src\/test\/resources\/important.properties\");\n    InputStream inputStream = resource.getInputStream();\n    String content = IoUtil.readUtf8(inputStream);\n    System.out.println(content);\n}    \n\n@Test\npublic void test_url() throws IOException {\n    \/\/ \u7f51\u7edc\u539f\u56e0\u53ef\u80fd\u5bfc\u81f4GitHub\u4e0d\u80fd\u8bfb\u53d6\uff0c\u53ef\u4ee5\u653e\u5230\u81ea\u5df1\u7684Gitee\u4ed3\u5e93\u3002\u8bfb\u53d6\u540e\u53ef\u4ee5\u4ece\u5185\u5bb9\u4e2d\u641c\u7d22\u5173\u952e\u5b57\uff1bOLpj9823dZ\n    Resource resource = resourceLoader.getResource(\"https:\/\/github.com\/fuzhengwei\/small-spring\/blob\/main\/important.properties\") \n    InputStream inputStream = resource.getInputStream();\n    String content = IoUtil.readUtf8(inputStream);\n    System.out.println(content);\n}<\/code><\/pre>\n\n\n\n
                              \u7ed3\u679c\uff1a<\/p>\n\n\n\n
                              # Config File\nsystem.key=OLpj9823dZ\n\n\nProcess finished with exit code 0<\/code><\/pre>\n\n\n\n
                              12 \u5355\u5143\u6d4b\u8bd5(\u914d\u7f6e\u6587\u4ef6\u6ce8\u518cBean)\uff1a<\/p>\n\n\n\n
                              @Test\npublic void test_xml() {\n    \/\/ 1.\u521d\u59cb\u5316 BeanFactory\n    DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();\n\n    \/\/ 2. \u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6&\u6ce8\u518cBean\n    XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(beanFactory);\n    reader.loadBeanDefinitions(\"classpath:spring.xml\");\n\n    \/\/ 3. \u83b7\u53d6Bean\u5bf9\u8c61\u8c03\u7528\u65b9\u6cd5\n    UserService userService = beanFactory.getBean(\"userService\", UserService.class);\n    String result = userService.queryUserInfo();\n    System.out.println(\"\u6d4b\u8bd5\u7ed3\u679c\uff1a\" + result);\n}\n<\/code><\/pre>\n\n\n\n
                              \u7ed3\u679c\uff1a<\/p>\n\n\n\n
                              \u6d4b\u8bd5\u7ed3\u679c\uff1aCMD137<\/code><\/pre>\n\n\n\n
                              Step 6\uff1a\u5b9e\u73b0\u5e94\u7528\u4e0a\u4e0b\u6587\uff1a<\/h1>\n\n\n\n
                              \u76ee\u6807\uff1a<\/h2>\n\n\n\n
                                \n
                              • \u5c01\u88c5\u7edf\u4e00\u7684\u4e0a\u4e0b\u6587\u5165\u53e3\uff08ApplicationContext\uff09\uff0c\u628a Bean \u5bf9\u8c61\u6269\u5c55\u673a\u5236\u529f\u80fd\u548c\u5bf9 Spring \u6846\u67b6\u4e0a\u4e0b\u6587\u7684\u5305\u88c5\u878d\u5408\u8d77\u6765\uff0c\u5bf9\u5916\u63d0\u4f9b\u5b8c\u6574\u7684\u670d\u52a1\uff1b<\/li>\n\n\n\n
                              • \u5f15\u5165\u6269\u5c55\u673a\u5236\uff0c\u652f\u6301\u7528\u6237\u81ea\u5b9a\u4e49 Bean \u4fee\u6539\u4e0e\u589e\u5f3a\uff1b<\/li>\n\n\n\n
                              • \u5b9e\u73b0 Bean \u751f\u547d\u5468\u671f\u4e2d\u5173\u952e\u6269\u5c55\u70b9\u7684\u63d2\u5165\u903b\u8f91\uff1b<\/li>\n<\/ul>\n\n\n\n
                                \u77e5\u8bc6\uff1a<\/h2>\n\n\n\n
                                \u5148\u660e\u786eBean\u7684\u751f\u547d\u5468\u671f\uff1a<\/p>\n\n\n\n
                                Bean \u751f\u547d\u5468\u671f\u9636\u6bb5\uff08\u542b\u6269\u5c55\u70b9\uff09\uff1a\u2b50\u2b50\u2b50\u2b50\u2b50<\/h3>\n\n\n\n
                                  \n
                                1. \u5bb9\u5668\u542f\u52a8<\/li>\n\n\n\n
                                2. \u52a0\u8f7d & \u6ce8\u518c BeanDefinition<\/li>\n\n\n\n
                                3. \ud83d\udd27 \u8c03\u7528 BeanFactoryPostProcessor<\/strong>\u3010\u4fee\u6539 BeanDefinition\u3011<\/li>\n\n\n\n
                                4. \u5b9e\u4f8b\u5316 Bean\uff08new \u5bf9\u8c61\uff09<\/li>\n\n\n\n
                                5. \u5c5e\u6027\u586b\u5145\uff08\u4f9d\u8d56\u6ce8\u5165\uff09<\/li>\n\n\n\n
                                6. \u611f\u77e5\u5bb9\u5668\uff1a\u8c03\u7528 Aware \u63a5\u53e3<\/li>\n\n\n\n
                                7. \u521d\u59cb\u5316 Bean\uff08\u521d\u59cb\u5316\u9636\u6bb5\uff09
                                  \u251c\u2500 \ud83d\udd27 BeanPostProcessor.beforeInit()<\/strong>
                                  \u251c\u2500 InitializingBean.afterPropertiesSet()
                                  \u251c\u2500 init-method
                                  \u2514\u2500\ud83d\udd27  BeanPostProcessor.afterInit()<\/strong><\/li>\n\n\n\n
                                8. Bean \u53ef\u7528\uff08getBean \u83b7\u53d6\uff09<\/li>\n\n\n\n
                                9. \u9500\u6bc1\uff08DisposableBean \/ destroy-method\uff09<\/li>\n<\/ol>\n\n\n\n
                                  \u8bbe\u8ba1\uff1a<\/h2>\n\n\n\n
                                  \"\"<\/div><\/figure>\n\n\n\n
                                  1. ApplicationContext \u7684\u5c01\u88c5<\/h3>\n\n\n\n
                                  \u8bbe\u8ba1\u4e00\u4e2a\u65b0\u7684\u4e0a\u4e0b\u6587\u7c7b ClassPathXmlApplicationContext<\/code>\uff0c\u5b83\u4f5c\u4e3a\u5bf9\u5916\u66b4\u9732\u7684\u5bb9\u5668\u63a5\u53e3\uff0c\u8d1f\u8d23\u6574\u5408\u4ee5\u4e0b\u804c\u8d23\uff1a<\/p>\n\n\n\n
                                    \n
                                  • \u52a0\u8f7d\u548c\u89e3\u6790 XML \u914d\u7f6e\uff1b<\/li>\n\n\n\n
                                  • \u6ce8\u518c BeanDefinition\uff1b<\/li>\n\n\n\n
                                  • \u7ba1\u7406 BeanFactory\uff1b<\/li>\n\n\n\n
                                  • \u8c03\u7528\u6269\u5c55\u63a5\u53e3\uff1b<\/li>\n\n\n\n
                                  • \u63d0\u4f9b Bean \u83b7\u53d6\u5165\u53e3\uff1b<\/li>\n\n\n\n
                                  • \u5b9e\u4f8b\u5316 Bean\u3002<\/li>\n<\/ul>\n\n\n\n
                                    \n
                                    \u6b64\u7c7b\u5c06\u6210\u4e3a\u6211\u4eec\u5b9e\u73b0\u6ce8\u89e3\u626b\u63cf\u3001\u4e8b\u4ef6\u53d1\u5e03\u3001AOP \u7b49\u9ad8\u7ea7\u7279\u6027\u7684\u57fa\u7840\u3002<\/p>\n<\/blockquote>\n\n\n\n
                                    2. \u652f\u6301\u4e24\u79cd\u6269\u5c55\u673a\u5236\u63a5\u53e3<\/h3>\n\n\n\n
                                    \u4e3a\u4e86\u589e\u5f3a Bean \u7684\u5b9a\u4e49\u548c\u5b9e\u4f8b\u5316\u8fc7\u7a0b\uff0c\u6211\u4eec\u5f15\u5165\u4e24\u4e2a\u4e0e Spring \u5b8c\u5168\u4e00\u81f4\u7684\u6269\u5c55\u63a5\u53e3\uff1a<\/p>\n\n\n\n
                                    \uff081\uff09BeanFactoryPostProcessor<\/h4>\n\n\n\n
                                      \n
                                    • \u6267\u884c\u65f6\u673a<\/strong>\uff1a\u5728\u6240\u6709 BeanDefinition \u52a0\u8f7d\u5b8c\u6210\u540e\uff0cBean \u5b9e\u4f8b\u5316\u524d\u3002<\/li>\n\n\n\n
                                    • \u529f\u80fd\u4f5c\u7528<\/strong>\uff1a\u53ef\u4fee\u6539 Bean \u7684\u914d\u7f6e\u4fe1\u606f\uff08\u5982\u5c5e\u6027\u503c\u3001Scope\u3001\u662f\u5426\u61d2\u52a0\u8f7d\u7b49\uff09\u3002<\/li>\n\n\n\n
                                    • \u5e38\u89c1\u7528\u9014<\/strong>\uff1a\u6ce8\u5165\u52a8\u6001\u914d\u7f6e\u3001\u6269\u5c55\u5c5e\u6027\u3001\u4fee\u6539\u6ce8\u518c\u7b56\u7565\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n
                                      \uff082\uff09BeanPostProcessor<\/h4>\n\n\n\n
                                        \n
                                      • \u6267\u884c\u65f6\u673a<\/strong>\uff1a\u5728\u6bcf\u4e2a Bean \u5b9e\u4f8b\u5316\u540e\u3001\u521d\u59cb\u5316\u524d\u540e\u3002<\/li>\n\n\n\n
                                      • \u529f\u80fd\u4f5c\u7528<\/strong>\uff1a\u53ef\u589e\u5f3a Bean \u5b9e\u4f8b\uff0c\u5982\u4ee3\u7406\u5305\u88c5\u3001\u65e5\u5fd7\u6ce8\u5165\u3001AOP \u5b9e\u73b0\u7b49\u3002<\/li>\n\n\n\n
                                      • \u5e38\u89c1\u7528\u9014<\/strong>\uff1a\u5b9e\u73b0\u4ee3\u7406\u3001\u6570\u636e\u6e90\u8def\u7531\u3001\u4e8b\u52a1\u63a7\u5236\u3001\u6743\u9650\u6ce8\u5165\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n
                                        3. \u81ea\u52a8\u6ce8\u518c\u4e0e\u6267\u884c<\/h3>\n\n\n\n
                                          \n
                                        • \u4e0a\u4e0b\u6587\u542f\u52a8\u65f6\u81ea\u52a8\u8bc6\u522b XML \u914d\u7f6e\u4e2d\u7684\u6269\u5c55\u63a5\u53e3 Bean\uff1b<\/li>\n\n\n\n
                                        • \u8c03\u7528 postProcessBeanFactory()<\/code> \u4fee\u6539 BeanDefinition\uff1b<\/li>\n\n\n\n
                                        • \u8c03\u7528 postProcessBefore\/AfterInitialization()<\/code> \u589e\u5f3a Bean \u5b9e\u4f8b\uff1b<\/li>\n\n\n\n
                                        • \u652f\u6301\u591a\u4e2a\u6269\u5c55\u7c7b\u534f\u540c\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n
                                          Spring \u5e94\u7528\u4e0a\u4e0b\u6587\u548c\u5bf9Bean\u5bf9\u8c61\u6269\u5c55\u673a\u5236\u7684\u7c7b\u5173\u7cfb\uff1a<\/h2>\n\n\n\n
                                          \"\"<\/div><\/figure>\n\n\n\n
                                            \n
                                          • \u4ee5\u7ee7\u627f\u4e86 ListableBeanFactory \u63a5\u53e3\u7684 ApplicationContext \u63a5\u53e3\u5f00\u59cb\uff0c\u6269\u5c55\u51fa\u4e00\u7cfb\u5217\u5e94\u7528\u4e0a\u4e0b\u6587\u7684\u62bd\u8c61\u5b9e\u73b0\u7c7b\uff0c\u5e76\u6700\u7ec8\u5b8c\u6210 ClassPathXmlApplicationContext<\/code> \u7c7b\u7684\u5b9e\u73b0\u3002\u800c\u8fd9\u4e2a\u7c7b\u5c31\u662f\u6700\u540e\u4ea4\u7ed9\u7528\u6237\u4f7f\u7528\u7684\u7c7b\u3002<\/li>\n\n\n\n
                                          • \u540c\u65f6\u5728\u5b9e\u73b0\u5e94\u7528\u4e0a\u4e0b\u6587\u7684\u8fc7\u7a0b\u4e2d\uff0c\u901a\u8fc7\u5b9a\u4e49\u63a5\u53e3\uff1aBeanFactoryPostProcessor<\/code>\u3001BeanPostProcessor<\/code> \u4e24\u4e2a\u63a5\u53e3\uff0c\u628a\u5173\u4e8e\u5bf9 Bean \u7684\u6269\u5c55\u673a\u5236\u4e32\u8054\u8fdb\u53bb\u4e86<\/li>\n<\/ul>\n\n\n\n
                                            \u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
                                            1.\u5b9a\u4e49 BeanFactoryPostProcessor\uff1a<\/h3>\n\n\n\n
                                            public interface BeanFactoryPostProcessor {\n\n    \/**\n     * \u5728\u6240\u6709\u7684 BeanDefinition \u52a0\u8f7d\u5b8c\u6210\u540e\uff0c\u5b9e\u4f8b\u5316 Bean \u5bf9\u8c61\u4e4b\u524d\uff0c\u63d0\u4f9b\u4fee\u6539 BeanDefinition \u5c5e\u6027\u7684\u673a\u5236\n     *\n     * <\/em>@param <\/em><\/strong>beanFactory\n     * <\/em>@throws <\/em><\/strong>BeansException\n     *\/\n    <\/em>void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException;\n}<\/code><\/pre>\n\n\n\n
                                            2.\u5b9a\u4e49 BeanPostProcessor\uff1a<\/h3>\n\n\n\n
                                            public interface BeanPostProcessor {\n\n    \/**\n     * \u5728 Bean \u5bf9\u8c61\u6267\u884c\u521d\u59cb\u5316\u65b9\u6cd5\u4e4b\u524d\uff0c\u6267\u884c\u6b64\u65b9\u6cd5\n     *\n     * @param bean\n     * @param beanName\n     * @return\n     * @throws BeansException\n     *\/\n    Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException;\n\n    \/**\n     * \u5728 Bean \u5bf9\u8c61\u6267\u884c\u521d\u59cb\u5316\u65b9\u6cd5\u4e4b\u540e\uff0c\u6267\u884c\u6b64\u65b9\u6cd5\n     *\n     * @param bean\n     * @param beanName\n     * @return\n     * @throws BeansException\n     *\/\n    Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException;\n\n}\n<\/code><\/pre>\n\n\n\n
                                            3.\u5b9a\u4e49\u4e0a\u4e0b\u6587\u63a5\u53e3\uff1a<\/h3>\n\n\n\n
                                            \/**
                                            <\/em> * ApplicationContext <\/em>\u4e3a\u5bb9\u5668\u7684\u6838\u5fc3\u63a5\u53e3\uff08<\/em>Central<\/em>\u63a5\u53e3\uff09\uff0c\u8d1f\u8d23\u7edf\u4e00\u5bf9\u5916\u63d0\u4f9b\u5bb9\u5668\u529f\u80fd\u3002
                                            <\/em> <\/em>*\/
                                            <\/em>public interface ApplicationContext extends ListableBeanFactory {
                                            }<\/code><\/pre>\n\n\n\n
                                            \u76ee\u524d\u8fd9\u4e2a\u63a5\u53e3\u8fd8\u5f88\u7b80\u5316\uff0c\u6ca1\u6709\u589e\u52a0\u83b7\u53d6\u4e0a\u4e0b\u6587 ID \u6216\u7236\u4e0a\u4e0b\u6587\u7b49\u989d\u5916\u65b9\u6cd5\uff0c\u6240\u4ee5\u63a5\u53e3\u5185\u6682\u65f6\u6ca1\u6709\u65b0\u589e\u5b9a\u4e49\u3002<\/p>\n\n\n\n
                                            <\/p>\n\n\n\n
                                            \/**\n *  \u63d0\u4f9b\u4e86\u5bf9 Spring \u5bb9\u5668\u7684\u914d\u7f6e\u548c\u5237\u65b0\u80fd\u529b\uff0c\u662f\u542f\u52a8\u548c\u91cd\u7f6e\u5bb9\u5668\u7684\u5173\u952e\u63a5\u53e3\u3002\n *  \u5b83\u8ba9 ApplicationContext \u4e0d\u4ec5\u662f\u201c\u53ea\u8bfb\u201d\u7684 Bean \u5de5\u5382\uff0c\u66f4\u662f\u53ef\u63a7\u5236\u751f\u547d\u5468\u671f\u7684\u5b8c\u6574\u5bb9\u5668\u3002\n *\/\npublic interface ConfigurableApplicationContext extends ApplicationContext {\n\n    \/**\n     * \u5237\u65b0\uff08\u542f\u52a8\uff09\u5bb9\u5668\n     *\n     * @throws BeansException\n     *\/\n    void refresh() throws BeansException;\n\n}<\/code><\/pre>\n\n\n\n
                                            \u6b64\u5904\u6709\u4e2a\u5c0f\u95ee\u9898\uff1a\u4e3a\u4ec0\u4e48 Spring \u91cc\u7528 refresh() \u800c\u4e0d\u662f start() \u6765\u8868\u793a\u201c\u542f\u52a8\u5bb9\u5668\u201d\u7684\u52a8\u4f5c\uff1f<\/p>\n\n\n\n
                                            \u7b80\u5355\u7406\u89e3\uff1arefresh()<\/code> \u5f3a\u8c03\u5bb9\u5668\u53ef\u91cd\u5efa\u3001\u53ef\u70ed\u52a0\u8f7d\uff08\u5728\u6574\u4e2aspring\u670d\u52a1\u5728\u6ca1\u6709\u5173\u95ed\u7684\u60c5\u51b5\u4e0b\uff0c\u4f5c\u4e3a\u6838\u5fc3\u7684\u5bb9\u5668\u53ef\u4ee5\u5355\u72ec\u5237\u65b0\uff09\uff0c\u800c start()<\/code> \u66f4\u50cf\u662f\u4e00\u6b21\u6027\u7684\u542f\u52a8\uff0c\u4e0d\u7b26\u5408 Spring \u5bb9\u5668\u7684\u8bbe\u8ba1\u7406\u5ff5\u3002<\/p>\n\n\n\n
                                            <\/p>\n\n\n\n
                                            4.\u5e94\u7528\u4e0a\u4e0b\u6587\u62bd\u8c61\u7c7b\u5b9e\u73b0\u524d\u63d0\uff1a
                                            <\/h3>\n\n\n\n
                                            \u5728\u5b9e\u73b0\u5e94\u7528\u4e0a\u4e0b\u6587\u62bd\u8c61\u7c7b\u4e4b\u524d\uff0c\u5148\u8981\u8865\u5145\u4e0a\u4e00\u8282\u62d3\u5c55\u7684\u4e00\u4e9b\u63a5\u53e3\uff1a<\/p>\n\n\n\n
                                            \u6ce8\u610f\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\u6b64\u5904\u6559\u7a0b\u4e2d\u5728ConfigurableBeanFactory\u53ca\u5176\u5b50\u63a5\u53e3ConfigurableListableBeanFactory\u4e2d\u90fd\u5b9a\u4e49\u4e86addBeanPostProcessor\uff0c\u91cd\u590d\u5b9a\u4e49\u4e86\uff0c\u4e8e\u662f\u67e5\u770b\u6e90\u4ee3\u7801\uff0c\u53d1\u73b0addBeanPostProcessor\u53ea\u5b9a\u4e49\u5728ConfigurableBeanFactory\u4e2d\u3002\u6b64\u5904\u6309spring\u6e90\u7801\u5b9e\u73b0\u3002<\/h4>\n\n\n\n
                                            ConfigurableBeanFactory\uff1a<\/h4>\n\n\n\n
                                            \u6dfb\u52a0\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
                                            \/**\n * \u6ce8\u518c BeanPostProcessor\uff0c\u7528\u4e8e\u5728 Bean \u521d\u59cb\u5316\u524d\u540e\u8fdb\u884c\u6269\u5c55\u5904\u7406\u3002\n * \u6240\u6709\u6ce8\u518c\u7684\u540e\u7f6e\u5904\u7406\u5668\u4f1a\u5728\u521b\u5efa\u6bcf\u4e2a Bean \u65f6\u81ea\u52a8\u8c03\u7528\u3002\n *\/\n<\/em>void addBeanPostProcessor(BeanPostProcessor beanPostProcessor);<\/code><\/pre>\n\n\n\n
                                            ConfigurableListableBeanFactory\uff1a<\/h4>\n\n\n\n
                                            \u6dfb\u52a0\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
                                            \/**\n<\/em> * <\/em>\u5b9e\u4f8b\u5316\u6240\u6709\u975e\u61d2\u52a0\u8f7d\u7684\u5355\u4f8b <\/em>Bean<\/em>\uff0c\u786e\u4fdd\u5bb9\u5668\u542f\u52a8\u540e\u8fd9\u4e9b <\/em>Bean <\/em>\u53ef\u7528\u3002\n<\/em> <\/em>* <\/em>\u4f1a\u89e6\u53d1\u5b8c\u6574\u7684 <\/em>Bean <\/em>\u521b\u5efa\u6d41\u7a0b\uff08\u5b9e\u4f8b\u5316\u3001\u4f9d\u8d56\u6ce8\u5165\u3001\u521d\u59cb\u5316\u7b49\uff09\u3002\n<\/em> <\/em>*\/\n<\/em>void preInstantiateSingletons() throws BeansException;\n\n<\/code><\/pre>\n\n\n\n
                                            \u5bf9\u5e94\u7684\uff0c\u5b9e\u73b0\u7c7b\u91cc\u5c31\u8981\u5b9e\u73b0\uff1a<\/p>\n\n\n\n
                                            AbstractBeanFactory\uff1a<\/h4>\n\n\n\n
                                            \u4fee\u6539\uff1aimplements BeanFactory -\u300bimplements ConfigurableBeanFactory\uff1b<\/p>\n\n\n\n
                                            \u6dfb\u52a0\uff1a<\/p>\n\n\n\n
                                            \/\/ \u5b58\u50a8\u6240\u6709\u6ce8\u518c\u7684 BeanPostProcessor\uff0c\u7528\u4e8e\u5728 Bean \u521d\u59cb\u5316\u524d\u540e\u8fdb\u884c\u6269\u5c55\u5904\u7406\n    private final List<BeanPostProcessor> beanPostProcessors = new ArrayList<>();\n\n    \/**\n     * \u6ce8\u518c\u4e00\u4e2a BeanPostProcessor\u3002\n     * \u82e5\u5df2\u5b58\u5728\u76f8\u540c\u5b9e\u4f8b\uff0c\u5219\u5148\u79fb\u9664\u540e\u518d\u6dfb\u52a0\uff0c\u786e\u4fdd\u987a\u5e8f\u6027\uff08\u540e\u6dfb\u52a0\u7684\u5728\u6700\u540e\u6267\u884c\uff09\u3002\n     *\/\n    @Override\n    public void addBeanPostProcessor(BeanPostProcessor beanPostProcessor) {\n        \/\/ \u907f\u514d\u91cd\u590d\u6ce8\u518c\u540c\u4e00\u4e2a\u5904\u7406\u5668\n        this.beanPostProcessors.remove(beanPostProcessor);\n        \/\/ \u6dfb\u52a0\u5230\u5217\u8868\u672b\u5c3e\uff0c\u786e\u4fdd\u8c03\u7528\u987a\u5e8f\n        this.beanPostProcessors.add(beanPostProcessor);\n    }\n\n\n    \/**\n     *\u8fd4\u56de\u5c06\u5728\u8be5\u5de5\u5382\u521b\u5efa\u7684 Bean \u4e0a\u5e94\u7528\u7684 BeanPostProcessor \u5217\u8868\u3002\n     *\/\n    public List<BeanPostProcessor> getBeanPostProcessors() {\n        return this.beanPostProcessors;\n    }<\/code><\/pre>\n\n\n\n
                                            DefaultListableBeanFactory\uff1a\u6dfb\u52a0<\/h4>\n\n\n\n
                                            @Override
                                            public void preInstantiateSingletons() throws BeansException {
                                                for (String beanName : beanDefinitionMap.keySet()) {
                                                    getBean(beanName);
                                                }
                                            }<\/pre>\n\n\n\n

                                            <\/p>\n\n\n\n
                                            4.\u5e94\u7528\u4e0a\u4e0b\u6587\u62bd\u8c61\u7c7b\u5b9e\u73b0\uff1a<\/h3>\n\n\n\n
                                            AbstractApplicationContext<\/code> \u662f\u4e00\u4e2a\u62bd\u8c61\u7c7b\uff0c\u4f5c\u4e3a \u5e94\u7528\u4e0a\u4e0b\u6587\u5bb9\u5668\u7684\u9aa8\u67b6\u5b9e\u73b0<\/strong>\uff0c\u7edf\u4e00\u5b9a\u4e49\u4e86 Spring \u5bb9\u5668\u521d\u59cb\u5316\u7684\u6807\u51c6\u6d41\u7a0b refresh()<\/code>\uff0c\u5e76\u5c06\u5177\u4f53\u7ec6\u8282\u5ef6\u8fdf\u5230\u5b50\u7c7b\u4e2d\u5b9e\u73b0<\/strong>\uff08\u5982 refreshBeanFactory()<\/code>\u3001getBeanFactory()<\/code>\uff09\u3002<\/p>\n\n\n\n
                                            \u65b9\u6cd5\u6838\u5fc3\u6d41\u7a0b\uff1a<\/h4>\n\n\n\n
                                            refresh() {\n    \u2460 refreshBeanFactory();                      \/\/ \u521b\u5efa BeanFactory \u5e76\u52a0\u8f7d BeanDefinition\n    \u2461 getBeanFactory();                          \/\/ \u83b7\u53d6\u5bb9\u5668\u7684 BeanFactory\n    \u2462 invokeBeanFactoryPostProcessors();         \/\/ \u6267\u884c BeanFactoryPostProcessor\uff0c\u4fee\u6539 Bean \u5b9a\u4e49\n    \u2463 registerBeanPostProcessors();              \/\/ \u6ce8\u518c BeanPostProcessor\uff0c\u7528\u4e8e Bean \u521b\u5efa\u8fc7\u7a0b\u4e2d\u7684\u62e6\u622a\n    \u2464 preInstantiateSingletons();                \/\/ \u5b9e\u4f8b\u5316\u6240\u6709\u975e\u61d2\u52a0\u8f7d\u7684\u5355\u4f8b Bean\n}<\/code><\/code><\/pre>\n\n\n\n
                                            \u6b65\u9aa4<\/th>\u4f5c\u7528<\/th>\u6269\u5c55\u70b9<\/th><\/tr><\/thead>
                                            \u2460 \u521b\u5efa BeanFactory<\/td>\u901a\u5e38\u662f DefaultListableBeanFactory\uff0c\u52a0\u8f7d\u5e76\u6ce8\u518c\u6240\u6709 BeanDefinition<\/td>\u652f\u6301\u4e0d\u540c\u914d\u7f6e\u6765\u6e90<\/td><\/tr>
                                            \u2461 \u83b7\u53d6 BeanFactory<\/td>\u63d0\u4f9b\u540e\u7eed Bean \u7684\u6ce8\u518c\u3001\u521b\u5efa\u3001\u83b7\u53d6\u7b49\u64cd\u4f5c\u5165\u53e3<\/td>\u2014\u2014<\/td><\/tr>
                                            \u2462 \u6267\u884c BeanFactoryPostProcessor<\/td>\u5141\u8bb8\u5728 Bean \u5b9e\u4f8b\u5316\u524d\uff0c\u4fee\u6539 BeanDefinition<\/strong>\uff08\u6bd4\u5982\u66ff\u6362\u5c5e\u6027\u503c\u3001\u52a8\u6001\u6ce8\u518c\u65b0 Bean\uff09<\/td>BeanFactory \u6269\u5c55\u70b9<\/strong><\/td><\/tr>
                                            \u2463 \u6ce8\u518c BeanPostProcessor<\/td>\u5728 Bean \u521b\u5efa\u8fc7\u7a0b\uff08\u521d\u59cb\u5316\u524d\u540e\uff09\u63d2\u5165\u903b\u8f91\uff0c\u5982\u4ee3\u7406\u3001\u6ce8\u5165\u7b49<\/td>Bean \u751f\u547d\u5468\u671f\u6269\u5c55\u70b9<\/strong><\/td><\/tr>
                                            \u2464 \u5b9e\u4f8b\u5316\u5355\u4f8b Bean<\/td>\u8c03\u7528 createBean()<\/code> \u6d41\u7a0b\uff0c\u5305\u62ec\u4f9d\u8d56\u6ce8\u5165\u3001\u521d\u59cb\u5316\u65b9\u6cd5\u3001AOP\u7b49<\/td>Bean \u7684\u5b8c\u6574\u751f\u547d\u5468\u671f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                                            AbstractApplicationContext \u7ee7\u627f DefaultResourceLoader \u662f\u4e3a\u4e86\u5904\u7406 spring.xml<\/code> \u914d\u7f6e\u8d44\u6e90\u7684\u52a0\u8f7d\u3002<\/p>\n\n\n\n
                                            \/**\n * \u62bd\u8c61\u7684\u5e94\u7528\u4e0a\u4e0b\u6587\uff0c\u5b9e\u73b0\u4e86\u5bb9\u5668\u7684\u5237\u65b0\u673a\u5236\uff0c\u662f\u5bb9\u5668\u542f\u52a8\u7684\u6838\u5fc3\u5165\u53e3\u3002\n * \u7ee7\u627f DefaultResourceLoader\uff0c\u5177\u5907\u8d44\u6e90\u52a0\u8f7d\u80fd\u529b\uff1b\u5b9e\u73b0 ConfigurableApplicationContext\uff0c\u53ef\u914d\u7f6e\u4e0a\u4e0b\u6587\u3002\n *\/\npublic abstract class AbstractApplicationContext extends DefaultResourceLoader implements ConfigurableApplicationContext {\n\n    @Override\n    public void refresh() throws BeansException {\n        \/\/ 1. \u521b\u5efa BeanFactory\uff0c\u5e76\u52a0\u8f7d BeanDefinition\uff08\u4ece\u914d\u7f6e\u6587\u4ef6\u6216\u6ce8\u89e3\u4e2d\u89e3\u6790\u51fa Bean \u5b9a\u4e49\uff09\n        refreshBeanFactory();\n\n        \/\/ 2. \u83b7\u53d6\u5f53\u524d\u4e0a\u4e0b\u6587\u4f7f\u7528\u7684 BeanFactory\n        ConfigurableListableBeanFactory beanFactory = getBeanFactory();\n\n        \/\/ 3. \u6267\u884c\u6240\u6709 BeanFactoryPostProcessor\uff0c\u5141\u8bb8\u4fee\u6539 BeanDefinition\n        \/\/ \uff08\u6b64\u65f6\u8fd8\u672a\u5b9e\u4f8b\u5316\u4efb\u4f55 Bean\uff09\n        invokeBeanFactoryPostProcessors(beanFactory);\n\n        \/\/ 4. \u6ce8\u518c\u6240\u6709 BeanPostProcessor\uff0c\u4e3a\u540e\u7eed Bean \u5b9e\u4f8b\u5316\u8fc7\u7a0b\u6dfb\u52a0\u6269\u5c55\u903b\u8f91\uff08\u5982 AOP\u3001\u4f9d\u8d56\u6ce8\u5165\u7b49\uff09\n        registerBeanPostProcessors(beanFactory);\n\n        \/\/ 5. \u63d0\u524d\u5b9e\u4f8b\u5316\u6240\u6709\u975e\u61d2\u52a0\u8f7d\u7684\u5355\u4f8b Bean\uff08\u89e6\u53d1\u5b8c\u6574\u7684 Bean \u521b\u5efa\u6d41\u7a0b\uff09\n        beanFactory.preInstantiateSingletons();\n    }\n\n    \/**\n     * \u5237\u65b0 BeanFactory \u7684\u62bd\u8c61\u65b9\u6cd5\uff0c\u7531\u5b50\u7c7b\u5b9e\u73b0\uff0c\u8d1f\u8d23\u521b\u5efa BeanFactory \u548c\u52a0\u8f7d BeanDefinition\u3002\n     *\/\n    protected abstract void refreshBeanFactory() throws BeansException;\n\n    \/**\n     * \u83b7\u53d6\u5f53\u524d\u4e0a\u4e0b\u6587\u6301\u6709\u7684 BeanFactory\uff0c\u7531\u5b50\u7c7b\u5b9e\u73b0\u3002\n     *\/\n    protected abstract ConfigurableListableBeanFactory getBeanFactory();\n\n    \/**\n     * \u6267\u884c\u6240\u6709\u6ce8\u518c\u7684 BeanFactoryPostProcessor\uff0c\u5141\u8bb8\u7528\u6237\u5728 Bean \u5b9e\u4f8b\u5316\u524d\u4fee\u6539 BeanDefinition\u3002\n     *\/\n    private void invokeBeanFactoryPostProcessors(ConfigurableListableBeanFactory beanFactory) {\n        \/\/ \u83b7\u53d6\u6240\u6709\u5b9e\u73b0\u4e86 BeanFactoryPostProcessor \u7684 Bean\n        Map<String, BeanFactoryPostProcessor> beanFactoryPostProcessorMap =\n                beanFactory.getBeansOfType(BeanFactoryPostProcessor.class);\n\n        \/\/ \u4f9d\u6b21\u6267\u884c\u6bcf\u4e2a BeanFactoryPostProcessor \u7684\u540e\u7f6e\u5904\u7406\u65b9\u6cd5\n        for (BeanFactoryPostProcessor beanFactoryPostProcessor : beanFactoryPostProcessorMap.values()) {\n            beanFactoryPostProcessor.postProcessBeanFactory(beanFactory);\n        }\n    }\n\n    \/**\n     * \u6ce8\u518c\u6240\u6709 BeanPostProcessor\uff0c\u5728 Bean \u521b\u5efa\u8fc7\u7a0b\u4e2d\u8fdb\u884c\u6269\u5c55\u5904\u7406\uff08\u5982 AOP\u3001\u5c5e\u6027\u6ce8\u5165\u3001\u4ee3\u7406\u5305\u88c5\u7b49\uff09\u3002\n     * BeanPostProcessor \u4f1a\u4f5c\u7528\u4e8e\u6bcf\u4e00\u4e2a\u540e\u7eed\u521b\u5efa\u7684 Bean\u3002\n     *\/\n    private void registerBeanPostProcessors(ConfigurableListableBeanFactory beanFactory) {\n        \/\/ \u83b7\u53d6\u6240\u6709 BeanPostProcessor \u7c7b\u578b\u7684 Bean\n        Map<String, BeanPostProcessor> beanPostProcessorMap =\n                beanFactory.getBeansOfType(BeanPostProcessor.class);\n\n        \/\/ \u5c06\u5b83\u4eec\u6ce8\u518c\u5230 BeanFactory \u4e2d\uff0c\u4fbf\u4e8e\u540e\u7eed\u5728 Bean \u521b\u5efa\u8fc7\u7a0b\u4e2d\u56de\u8c03\n        for (BeanPostProcessor beanPostProcessor : beanPostProcessorMap.values()) {\n            beanFactory.addBeanPostProcessor(beanPostProcessor);\n        }\n    }\n\n    \/\/ \u4ee5\u4e0b\u662f\u5bf9 ApplicationContext \u4e2d\u90e8\u5206 getBean \u65b9\u6cd5\u7684\u9ed8\u8ba4\u5b9e\u73b0\uff0c\u5747\u59d4\u6258\u7ed9 BeanFactory\n\n    @Override\n    public <T> Map<String, T> getBeansOfType(Class<T> type) throws BeansException {\n        return getBeanFactory().getBeansOfType(type);\n    }\n\n    @Override\n    public String[] getBeanDefinitionNames() {\n        return getBeanFactory().getBeanDefinitionNames();\n    }\n\n    @Override\n    public Object getBean(String name) throws BeansException {\n        return getBeanFactory().getBean(name);\n    }\n\n    @Override\n    public Object getBean(String name, Object... args) throws BeansException {\n        return getBeanFactory().getBean(name, args);\n    }\n\n    @Override\n    public <T> T getBean(String name, Class<T> requiredType) throws BeansException {\n        return getBeanFactory().getBean(name, requiredType);\n    }\n}<\/code><\/pre>\n\n\n\n
                                            5.\u53ef\u83b7\u53d6Bean\u5de5\u5382\u548c\u52a0\u8f7d\u8d44\u6e90\u7684\u4e0a\u4e0b\u6587\u5b9e\u73b0\u7c7b\uff1aAbstractRefreshableApplicationContext<\/h3>\n\n\n\n
                                            \/**\n * \u62bd\u8c61\u7684\u53ef\u5237\u65b0\u7684\u5e94\u7528\u4e0a\u4e0b\u6587\u5b9e\u73b0\u7c7b\u3002\n * \u83b7\u53d6\u4e86 DefaultListableBeanFactory \u7684\u5b9e\u4f8b\u5316\n * \u5b9a\u4e49\u4e86\u5bf9\u8d44\u6e90\u914d\u7f6e\u7684\u52a0\u8f7d\u64cd\u4f5c loadBeanDefinitions(beanFactory)\u3002\n *\/\npublic abstract class AbstractRefreshableApplicationContext extends AbstractApplicationContext {\n\n    \/\/ \u6301\u6709\u5f53\u524d\u4e0a\u4e0b\u6587\u4f7f\u7528\u7684 BeanFactory \u5b9e\u4f8b\n    private DefaultListableBeanFactory beanFactory;\n\n    \/**\n     * \u5237\u65b0 BeanFactory\uff1a\u6bcf\u6b21 refresh() \u65f6\u90fd\u4f1a\u521b\u5efa\u65b0\u7684 BeanFactory \u5e76\u52a0\u8f7d BeanDefinition\u3002\n     *\/\n    @Override\n    protected void refreshBeanFactory() throws BeansException {\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u7684 BeanFactory \u5b9e\u4f8b\n        DefaultListableBeanFactory beanFactory = createBeanFactory();\n\n        \/\/ \u5c06\u914d\u7f6e\u4fe1\u606f\uff08\u5982 XML \u6216\u6ce8\u89e3\uff09\u52a0\u8f7d\u5230\u65b0\u521b\u5efa\u7684 BeanFactory \u4e2d\n        loadBeanDefinitions(beanFactory);\n\n        \/\/ \u7528\u65b0 BeanFactory \u66ff\u6362\u65e7\u7684\uff08\u76f8\u5f53\u4e8e\u5b8c\u6210\u4e00\u6b21\u201c\u4e0a\u4e0b\u6587\u5237\u65b0\u201d\uff09\n        this.beanFactory = beanFactory;\n    }\n\n    \/**\n     * \u521b\u5efa\u4e00\u4e2a\u65b0\u7684 BeanFactory \u5b9e\u4f8b\u3002\n     *\/\n    private DefaultListableBeanFactory createBeanFactory() {\n        return new DefaultListableBeanFactory();\n    }\n\n    \/**\n     * \u62bd\u8c61\u65b9\u6cd5\uff0c\u7531\u5b50\u7c7b\u5b9e\u73b0\uff0c\u7528\u4e8e\u52a0\u8f7d BeanDefinition\uff08\u5373 Bean \u7684\u914d\u7f6e\u4fe1\u606f\uff09\u3002\n     * \u4f8b\u5982\uff1aXmlApplicationContext \u4f1a\u4ece XML \u4e2d\u89e3\u6790 BeanDefinition\u3002\n     *\/\n    protected abstract void loadBeanDefinitions(DefaultListableBeanFactory beanFactory);\n\n    \/**\n     * \u83b7\u53d6\u5f53\u524d\u5e94\u7528\u4e0a\u4e0b\u6587\u6301\u6709\u7684 BeanFactory\u3002\n     *\/\n    @Override\n    protected ConfigurableListableBeanFactory getBeanFactory() {\n        return beanFactory;\n    }\n}<\/code><\/pre>\n\n\n\n
                                            6.\u5bf9\u914d\u7f6e\u4fe1\u606f\u7684\u52a0\u8f7d\u7684\u5b9e\u73b0\uff1a<\/h3>\n\n\n\n
                                            \/**
                                            <\/em> * <\/em>\u57fa\u4e8e <\/em>XML <\/em>\u914d\u7f6e\u6587\u4ef6\u7684\u62bd\u8c61\u5e94\u7528\u4e0a\u4e0b\u6587\uff0c\u5b9e\u73b0\u4e86\u4ece\u914d\u7f6e\u8def\u5f84\u4e2d\u52a0\u8f7d <\/em>Bean <\/em>\u5b9a\u4e49\u7684\u529f\u80fd\u3002
                                            <\/em> <\/em>* <\/em>\u7ee7\u627f\u81ea <\/em>AbstractRefreshableApplicationContext<\/em>\uff0c\u5177\u5907<\/em>\u201c<\/em>\u53ef\u5237\u65b0 <\/em>BeanFactory\u201d<\/em>\u7684\u80fd\u529b\u3002
                                            <\/em> <\/em>*
                                            <\/em> * <\/em>\u8be5\u7c7b\u7684\u4e3b\u8981\u804c\u8d23\u662f\u8c03\u7528 <\/em>XmlBeanDefinitionReader <\/em>\u4ece <\/em>XML <\/em>\u6587\u4ef6\u4e2d\u8bfb\u53d6 <\/em>BeanDefinition<\/em>\u3002
                                            <\/em> <\/em>* <\/em>\u5b50\u7c7b\u9700\u8981\u63d0\u4f9b\u914d\u7f6e\u6587\u4ef6\u7684\u8def\u5f84\uff08\u5982 <\/em>ClassPathXmlApplicationContext<\/em>\uff09\u3002
                                            <\/em> <\/em>*\/
                                            <\/em>public abstract class AbstractXmlApplicationContext extends AbstractRefreshableApplicationContext {

                                                \/**
                                            <\/em>     * <\/em>\u52a0\u8f7d <\/em>Bean <\/em>\u5b9a\u4e49\uff1a\u4f7f\u7528 <\/em>XmlBeanDefinitionReader <\/em>\u89e3\u6790 <\/em>XML <\/em>\u914d\u7f6e\u6587\u4ef6\uff0c
                                            <\/em>     <\/em>* <\/em>\u5e76\u5c06\u89e3\u6790\u7ed3\u679c\u6ce8\u518c\u5230\u4f20\u5165\u7684 <\/em>BeanFactory <\/em>\u4e2d\u3002
                                            <\/em>     <\/em>*
                                            <\/em>     * <\/em>@param <\/em><\/strong>beanFactory <\/em>\u7528\u4e8e\u6ce8\u518c\u89e3\u6790\u540e\u7684 <\/em>Bean <\/em>\u5b9a\u4e49
                                            <\/em>     <\/em>*\/
                                            <\/em>    <\/em>@Override
                                                protected void loadBeanDefinitions(DefaultListableBeanFactory beanFactory) {
                                                    \/\/ \u521b\u5efa XML \u89e3\u6790\u5668\uff0c\u4f20\u5165 BeanFactory \u548c\u8d44\u6e90\u52a0\u8f7d\u5668\uff08ApplicationContext \u672c\u8eab\uff09
                                                    XmlBeanDefinitionReader beanDefinitionReader = new XmlBeanDefinitionReader(beanFactory, this);

                                                    \/\/ \u83b7\u53d6\u914d\u7f6e\u6587\u4ef6\u8def\u5f84
                                                    String[] configLocations = getConfigLocations();

                                                    \/\/ \u52a0\u8f7d XML \u914d\u7f6e\u4e2d\u7684 Bean \u5b9a\u4e49
                                                    if (null != configLocations){
                                                        beanDefinitionReader.loadBeanDefinitions(configLocations);
                                                    }
                                                }

                                                \/**
                                            <\/em>     * <\/em>\u83b7\u53d6\u914d\u7f6e\u6587\u4ef6\u8def\u5f84\uff08\u5982 <\/em>classpath:spring.xml<\/em>\uff09
                                            <\/em>     <\/em>* <\/em>\u8be5\u65b9\u6cd5\u4ea4\u7531\u5b50\u7c7b\u5b9e\u73b0\uff0c\u5141\u8bb8\u7075\u6d3b\u6307\u5b9a\u4e0d\u540c\u7684\u914d\u7f6e\u8d44\u6e90\u3002
                                            <\/em>     <\/em>*
                                            <\/em>     * <\/em>@return <\/em><\/strong>\u5305\u542b\u914d\u7f6e\u6587\u4ef6\u8def\u5f84\u7684\u5b57\u7b26\u4e32\u6570\u7ec4
                                            <\/em>     <\/em>*\/
                                            <\/em>    <\/em>protected abstract String[] getConfigLocations();
                                            }<\/code><\/pre>\n\n\n\n
                                            7.\u5e94\u7528\u4e0a\u4e0b\u6587\u5b9e\u73b0\u7c7b\uff1aClassPathXmlApplicationContext\uff1a<\/h3>\n\n\n\n
                                            \/**\n * \u5e94\u7528\u4e0a\u4e0b\u6587\u5b9e\u73b0\u7c7b\uff0c\u4ece\u7c7b\u8def\u5f84\u4e0b\u7684 XML \u6587\u4ef6\u4e2d\u52a0\u8f7d Bean \u5b9a\u4e49\u3002\n * \u7ee7\u627f\u81ea AbstractXmlApplicationContext\uff0c\u5177\u4f53\u5b9e\u73b0\u4e86\u914d\u7f6e\u8def\u5f84\u7684\u83b7\u53d6\u65b9\u5f0f\u3002\n *\n * \u4e00\u65e6\u6784\u9020\u65b9\u6cd5\u63a5\u6536\u5230\u914d\u7f6e\u8def\u5f84\uff0c\u4f1a\u7acb\u5373\u8c03\u7528 refresh() \u65b9\u6cd5\uff0c\u5b8c\u6210\u6574\u4e2a IoC \u5bb9\u5668\u7684\u521b\u5efa\u4e0e\u521d\u59cb\u5316\u6d41\u7a0b\u3002\n *\/\npublic class ClassPathXmlApplicationContext extends AbstractXmlApplicationContext {\n\n    \/\/ \u914d\u7f6e\u6587\u4ef6\u8def\u5f84\u5217\u8868\uff08\u5982 \"classpath:spring.xml\"\uff09\n    private String[] configLocations;\n\n    public ClassPathXmlApplicationContext() {\n    }\n\n    \/**\n     * \u6784\u9020\u51fd\u6570\uff1a\u63a5\u6536\u5355\u4e2a\u914d\u7f6e\u8def\u5f84\uff0c\u8f6c\u6362\u4e3a\u6570\u7ec4\u5f62\u5f0f\n     * \u5e76\u7acb\u5373\u89e6\u53d1\u4e0a\u4e0b\u6587\u5237\u65b0\u6d41\u7a0b\uff08\u52a0\u8f7d BeanDefinition + \u521d\u59cb\u5316\u5bb9\u5668\uff09\n     *\n     * @param configLocations XML \u914d\u7f6e\u6587\u4ef6\u8def\u5f84\uff08\u5355\u4e2a\uff09\n     * @throws BeansException \u5f02\u5e38\u5904\u7406\n     *\/\n    public ClassPathXmlApplicationContext(String configLocations) throws BeansException {\n        this(new String[]{configLocations});\n    }\n\n    \/**\n     * \u6784\u9020\u51fd\u6570\uff1a\u63a5\u6536\u591a\u4e2a\u914d\u7f6e\u8def\u5f84\n     * \u5e76\u7acb\u5373\u89e6\u53d1\u4e0a\u4e0b\u6587\u5237\u65b0\u6d41\u7a0b\uff08\u52a0\u8f7d BeanDefinition + \u521d\u59cb\u5316\u5bb9\u5668\uff09\n     *\n     * @param configLocations XML \u914d\u7f6e\u6587\u4ef6\u8def\u5f84\u6570\u7ec4\n     * @throws BeansException \u5f02\u5e38\u5904\u7406\n     *\/\n    public ClassPathXmlApplicationContext(String[] configLocations) throws BeansException {\n        \/\/ \u8bbe\u7f6e\u914d\u7f6e\u8def\u5f84\n        this.configLocations = configLocations;\n\n        \/\/ \u5237\u65b0\u5bb9\u5668\uff1a\u5b8c\u6210 BeanFactory \u521b\u5efa\u3001\u52a0\u8f7d\u914d\u7f6e\u3001\u6ce8\u518c Bean \u7b49\u4e00\u7cfb\u5217\u52a8\u4f5c\n        refresh();\n    }\n\n    \/**\n     * \u63d0\u4f9b\u914d\u7f6e\u6587\u4ef6\u8def\u5f84\u7ed9\u62bd\u8c61\u7236\u7c7b\u7528\u4e8e\u52a0\u8f7d BeanDefinition\n     *\n     * @return \u914d\u7f6e\u8def\u5f84\u6570\u7ec4\n     *\/\n    @Override\n    protected String[] getConfigLocations() {\n        return configLocations;\n    }\n}<\/code><\/pre>\n\n\n\n
                                            \u6d41\u7a0b\u8bf4\u660e<\/h4>\n\n\n\n
                                              \n
                                            1. ClassPathXmlApplicationContext<\/code> \u6784\u9020\u65b9\u6cd5<\/strong>\n
                                                \n
                                              • \u63a5\u6536 configLocations<\/code>\uff08XML \u914d\u7f6e\u8def\u5f84\uff09\u5b57\u7b26\u4e32\u6216\u6570\u7ec4\u3002<\/li>\n\n\n\n
                                              • \u6784\u9020\u5b8c\u6210\u540e\u7acb\u5373\u8c03\u7528 refresh()<\/code> \u65b9\u6cd5\u521d\u59cb\u5316\u4e0a\u4e0b\u6587\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                              • refresh()<\/code><\/strong>\uff08\u5b9a\u4e49\u4e8e AbstractApplicationContext<\/code>\uff09\n
                                                  \n
                                                • \u662f\u6574\u4e2a\u4e0a\u4e0b\u6587\u5237\u65b0\u8fc7\u7a0b\u7684\u6838\u5fc3\u65b9\u6cd5\uff0c\u7edf\u4e00\u63a7\u5236\u6574\u4e2a Spring \u5bb9\u5668\u521d\u59cb\u5316\u6d41\u7a0b\u3002<\/li>\n\n\n\n
                                                • \u5185\u90e8\u4f1a\u8c03\u7528 refreshBeanFactory()<\/code> \u548c\u5176\u4ed6\u6ce8\u518c\u3001\u5b9e\u4f8b\u5316\u76f8\u5173\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                • refreshBeanFactory()<\/code><\/strong>\uff08\u5b9a\u4e49\u4e8e AbstractRefreshableApplicationContext<\/code>\uff09\n
                                                    \n
                                                  • \u521b\u5efa\u4e00\u4e2a\u65b0\u7684 BeanFactory\uff08\u901a\u5e38\u662f DefaultListableBeanFactory<\/code>\uff09\u3002<\/li>\n\n\n\n
                                                  • \u8c03\u7528 loadBeanDefinitions()<\/code> \u8bfb\u53d6\u5e76\u6ce8\u518c XML \u4e2d\u5b9a\u4e49\u7684 Bean\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                  • loadBeanDefinitions()<\/code><\/strong>\uff08\u5b9a\u4e49\u4e8e AbstractXmlApplicationContext<\/code>\uff09\n
                                                      \n
                                                    • \u5b9e\u4f8b\u5316 XmlBeanDefinitionReader<\/code>\u3002<\/li>\n\n\n\n
                                                    • \u8c03\u7528 getConfigLocations()<\/code> \u83b7\u53d6 XML \u6587\u4ef6\u8def\u5f84\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                    • getConfigLocations()<\/code><\/strong>\uff08\u5b9e\u73b0\u4e8e ClassPathXmlApplicationContext<\/code>\uff09\n
                                                        \n
                                                      • \u8fd4\u56de\u6784\u9020\u65f6\u4f20\u5165\u7684\u914d\u7f6e\u8def\u5f84\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                      • XmlBeanDefinitionReader.loadBeanDefinitions()<\/code><\/strong>\n
                                                          \n
                                                        • \u8bfb\u53d6 XML \u6587\u4ef6\u5e76\u5c06\u5176\u4e2d\u5b9a\u4e49\u7684 Bean \u4fe1\u606f\u6ce8\u518c\u5230 BeanFactory \u4e2d<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                                                          8.\u5728Bean\u521b\u5efa\u65f6\u5b8c\u6210\u524d\u7f6e\u548c\u540e\u7f6e\u5904\u7406\uff1a<\/h3>\n\n\n\n
                                                          \u8865\u5145AbstractAutowireCapableBeanFactory<\/strong>\u8fd9\u4e2aBean\u751f\u547d\u5468\u671f\u7ba1\u7406\u7684\u6838\u5fc3\u5b9e\u73b0\u7c7b\u3002<\/p>\n\n\n\n
                                                          \u9996\u5148\u8981\u586b\u524d\u9762\u7684\u5751\uff1a<\/p>\n\n\n\n
                                                          \u8865\u5145AutowireCapableBeanFactory\u63a5\u53e3\uff0c\u7136\u540e\u8ba9AbstractAutowireCapableBeanFactory<\/strong>\u5b9e\u73b0\u3002<\/p>\n\n\n\n
                                                          public interface AutowireCapableBeanFactory extends BeanFactory {
                                                              \/**
                                                          <\/em>     * <\/em>\u6267\u884c <\/em>BeanPostProcessors <\/em>\u63a5\u53e3\u5b9e\u73b0\u7c7b\u7684 <\/em>postProcessBeforeInitialization <\/em>\u65b9\u6cd5
                                                          <\/em>     <\/em>*
                                                          <\/em>     * <\/em>@param <\/em><\/strong>existingBean
                                                          <\/em>     <\/em>* <\/em>@param <\/em><\/strong>beanName
                                                          <\/em>     <\/em>* <\/em>@return
                                                          <\/em><\/strong>     <\/em><\/strong>* <\/em>@throws <\/em><\/strong>BeansException
                                                          <\/em>     *\/
                                                          <\/em>    <\/em>Object applyBeanPostProcessorsBeforeInitialization(Object existingBean, String beanName) throws BeansException;

                                                              \/**
                                                          <\/em>     * <\/em>\u6267\u884c <\/em>BeanPostProcessors <\/em>\u63a5\u53e3\u5b9e\u73b0\u7c7b\u7684 <\/em>postProcessorsAfterInitialization <\/em>\u65b9\u6cd5
                                                          <\/em>     <\/em>*
                                                          <\/em>     * <\/em>@param <\/em><\/strong>existingBean
                                                          <\/em>     <\/em>* <\/em>@param <\/em><\/strong>beanName
                                                          <\/em>     <\/em>* <\/em>@return
                                                          <\/em><\/strong>     <\/em><\/strong>* <\/em>@throws <\/em><\/strong>BeansException
                                                          <\/em>     *\/
                                                          <\/em>    <\/em>Object applyBeanPostProcessorsAfterInitialization(Object existingBean, String beanName) throws BeansException;
                                                          }<\/code><\/pre>\n\n\n\n
                                                          AbstractAutowireCapableBeanFactory<\/strong>\uff1a<\/p>\n\n\n\n
                                                          \u4fee\u6539\u548c\u8865\u5145\uff1a<\/p>\n\n\n\n
                                                          @Override
                                                          protected Object createBean(String beanName, BeanDefinition beanDefinition, Object[] args) throws BeansException {
                                                              Object bean = null;
                                                              try {
                                                                  \/\/\u521b\u5efa\u5b9e\u4f8b
                                                                  bean = createBeanInstance(beanDefinition, beanName, args);
                                                                  \/\/\u6ce8\u5165\u5c5e\u6027
                                                                  applyPropertyValues(bean, beanName, beanDefinition);
                                                                  \/\/ \u6267\u884c Bean \u7684\u521d\u59cb\u5316\u65b9\u6cd5\u548c BeanPostProcessor \u7684\u524d\u7f6e\u548c\u540e\u7f6e\u5904\u7406\u65b9\u6cd5
                                                                  bean = initializeBean(beanName, bean, beanDefinition);
                                                              } catch (Exception e) {
                                                                  throw new BeansException(\"Instantiation of bean failed\", e);
                                                              }

                                                              addSingleton(beanName, bean);
                                                              return bean;
                                                          }

                                                          \/**
                                                          <\/em> *<\/em>\u521d\u59cb\u5316 <\/em>Bean<\/em>\uff1a\u6267\u884c\u521d\u59cb\u5316\u524d\u540e\u5904\u7406\u5668\u3001\u8c03\u7528\u521d\u59cb\u5316\u65b9\u6cd5<\/em>invokeInitMethods
                                                          <\/em> *\/
                                                          <\/em>private Object initializeBean(String beanName, Object bean, BeanDefinition beanDefinition) {
                                                              \/\/ 1. \u6267\u884c BeanPostProcessor Before \u5904\u7406
                                                              \/\/    \u6bd4\u5982\uff1a@PostConstruct \u6216 Aware \u63a5\u53e3\u5904\u7406\u53ef\u4ee5\u5728\u8fd9\u91cc\u63d2\u5165
                                                              Object wrappedBean = applyBeanPostProcessorsBeforeInitialization(bean, beanName);

                                                              \/\/ \u5f85\u5b8c\u6210\u5185\u5bb9\uff1ainvokeInitMethods(beanName, wrappedBean, beanDefinition);
                                                              invokeInitMethods(beanName, wrappedBean, beanDefinition);

                                                              \/\/ 2. \u6267\u884c BeanPostProcessor After \u5904\u7406
                                                              \/\/    \u6bd4\u5982\uff1a@PostConstruct \u6216 Aware \u63a5\u53e3\u5904\u7406\u53ef\u4ee5\u5728\u8fd9\u91cc\u63d2\u5165
                                                              wrappedBean = applyBeanPostProcessorsAfterInitialization(bean, beanName);

                                                              \/\/ \u8fd4\u56de\u6700\u7ec8\u521d\u59cb\u5316\u5b8c\u6210\u7684 Bean
                                                              return wrappedBean;
                                                          }

                                                          \/**
                                                          <\/em> * <\/em>\u8c03\u7528 <\/em>Bean <\/em>\u7684\u521d\u59cb\u5316\u65b9\u6cd5
                                                          <\/em> <\/em>*\/
                                                          <\/em>private void invokeInitMethods(String beanName, Object wrappedBean, BeanDefinition beanDefinition) {
                                                              \/\/TODO<\/em>\uff1a\u540e\u7eed\u8865\u5145
                                                          <\/em>}

                                                          @Override
                                                          public Object applyBeanPostProcessorsBeforeInitialization(Object existingBean, String beanName) throws BeansException {
                                                              Object result = existingBean;
                                                              for (BeanPostProcessor processor : getBeanPostProcessors()) {
                                                                  Object current = processor.postProcessBeforeInitialization(result, beanName);
                                                                  if (null == current) return result;
                                                                  result = current;
                                                              }
                                                              return result;
                                                          }

                                                          \/*
                                                           * \u6267\u884c\u6240\u6709\u6ce8\u518c\u7684 BeanPostProcessor \u7684 postProcessBeforeInitialization \u65b9\u6cd5
                                                           * \u7528\u4e8e\u5728 Bean \u521d\u59cb\u5316\u65b9\u6cd5\u6267\u884c\u524d\uff0c\u505a\u4e00\u4e9b\u9884\u5904\u7406\u64cd\u4f5c
                                                           *\/
                                                          @Override
                                                          public Object applyBeanPostProcessorsAfterInitialization(Object existingBean, String beanName) throws BeansException {
                                                              Object result = existingBean;
                                                              for (BeanPostProcessor processor : getBeanPostProcessors()) {
                                                                  Object current = processor.postProcessAfterInitialization(result, beanName);
                                                                  if (null == current) return result;
                                                                  result = current;
                                                              }
                                                              return result;
                                                          }<\/code><\/pre>\n\n\n\n
                                                          \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
                                                          \u9664\u4e86\u7ecf\u5178\u7684UserDao<\/strong>\u548cUserService<\/strong>\uff08\u65b0\u589e\u52a0\u4e86 company\u3001location\uff0c\u4e24\u4e2a\u5c5e\u6027\u4fe1\u606f\uff0c\u4fbf\u4e8e\u6d4b\u8bd5 BeanPostProcessor\u3001BeanFactoryPostProcessor \u4e24\u4e2a\u63a5\u53e3\u5bf9 Bean \u5c5e\u6027\u4fe1\u606f\u6269\u5c55\u7684\u4f5c\u7528\uff09\uff0c\u6dfb\u52a0\uff1a<\/p>\n\n\n\n
                                                          \u5b9e\u73b0 BeanPostProcessor \u548c BeanFactoryPostProcessor\uff1a<\/h3>\n\n\n\n
                                                          public class MyBeanPostProcessor implements BeanPostProcessor {

                                                              @Override
                                                              public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
                                                                  if (\"userService\".equals(beanName)) {
                                                                      UserService userService = (UserService) bean;
                                                                      userService.setLocation(\"\u6539\u4e3a\uff1a\u5317\u4eac\");
                                                                  }
                                                                  return bean;
                                                              }

                                                              @Override
                                                              public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
                                                                  return bean;
                                                              }

                                                          }<\/code><\/pre>\n\n\n\n
                                                          public class MyBeanFactoryPostProcessor implements BeanFactoryPostProcessor {

                                                              @Override
                                                              public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {

                                                                  BeanDefinition beanDefinition = beanFactory.getBeanDefinition(\"userService\");
                                                                  PropertyValues propertyValues = beanDefinition.getPropertyValues();

                                                                  propertyValues.addPropertyValue(new PropertyValue(\"company\", \"\u6539\u4e3a\uff1a\u5b57\u8282\u8df3\u52a8\"));
                                                              }

                                                          }<\/code><\/pre>\n\n\n\n
                                                          \u914d\u7f6e\u6587\u4ef6\uff1a<\/h3>\n\n\n\n
                                                          \u57fa\u7840\u914d\u7f6e\uff0c\u65e0BeanFactoryPostProcessor\u3001BeanPostProcessor\uff0c\u5b9e\u73b0\u7c7b<\/strong>\uff1a<\/p>\n\n\n\n
                                                          <?xml version=\"1.0\" encoding=\"UTF-8\"?>
                                                          <beans>

                                                              <bean id=\"userDao\" class=\"cn.bugstack.springframework.test.bean.UserDao\"\/>

                                                              <bean id=\"userService\" class=\"cn.bugstack.springframework.test.bean.UserService\">
                                                                  <property name=\"uId\" value=\"10001\"\/>
                                                                  <property name=\"company\" value=\"\u817e\u8baf\"\/>
                                                                  <property name=\"location\" value=\"\u6df1\u5733\"\/>
                                                                  <property name=\"userDao\" ref=\"userDao\"\/>
                                                              <\/bean>

                                                          <\/beans><\/code><\/pre>\n\n\n\n
                                                          \u589e\u5f3a\u914d\u7f6e\uff0c\u6709BeanFactoryPostProcessor\u3001BeanPostProcessor\uff0c\u5b9e\u73b0\u7c7b<\/strong>\uff1a<\/p>\n\n\n\n
                                                          <?xml version=\"1.0\" encoding=\"UTF-8\"?>
                                                          <beans>

                                                              <bean id=\"userDao\" class=\"cn.bugstack.springframework.test.bean.UserDao\"\/>

                                                              <bean id=\"userService\" class=\"cn.bugstack.springframework.test.bean.UserService\">
                                                                  <property name=\"uId\" value=\"10001\"\/>
                                                                  <property name=\"company\" value=\"\u817e\u8baf\"\/>
                                                                  <property name=\"location\" value=\"\u6df1\u5733\"\/>
                                                                  <property name=\"userDao\" ref=\"userDao\"\/>
                                                              <\/bean>

                                                              <bean class=\"cn.bugstack.springframework.test.common.MyBeanPostProcessor\"\/>
                                                              <bean class=\"cn.bugstack.springframework.test.common.MyBeanFactoryPostProcessor\"\/>

                                                          <\/beans><\/code><\/pre>\n\n\n\n
                                                          \u8fd9\u91cc\u63d0\u4f9b\u4e86\u4e24\u4e2a\u914d\u7f6e\u6587\u4ef6\uff0c\u4e00\u4e2a\u662f\u4e0d\u5305\u542bBeanFactoryPostProcessor\u3001BeanPostProcessor\uff0c\u53e6\u5916\u4e00\u4e2a\u662f\u5305\u542b\u7684\u3002\u4e4b\u6240\u4ee5\u8fd9\u6837\u914d\u7f6e\u4e3b\u8981\u5bf9\u7167\u9a8c\u8bc1\uff0c\u5728\u8fd0\u7528 Spring \u65b0\u589e\u52a0\u7684\u5e94\u7528\u4e0a\u4e0b\u6587\u548c\u4e0d\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u90fd\u662f\u600e\u4e48\u64cd\u4f5c\u7684\u3002<\/p>\n\n\n\n
                                                          \u4e0d\u7528\u5e94\u7528\u4e0a\u4e0b\u6587\uff1a<\/h3>\n\n\n\n
                                                          @Test\npublic void test_BeanFactoryPostProcessorAndBeanPostProcessor(){\n    \/\/ 1.\u521d\u59cb\u5316 BeanFactory\n    DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();\n\n    \/\/ 2. \u8bfb\u53d6\u914d\u7f6e\u6587\u4ef6&\u6ce8\u518cBean\n    XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(beanFactory);\n    reader.loadBeanDefinitions(\"classpath:spring.xml\");\n\n    \/\/ 3. BeanDefinition \u52a0\u8f7d\u5b8c\u6210 & Bean\u5b9e\u4f8b\u5316\u4e4b\u524d\uff0c\u4fee\u6539 BeanDefinition \u7684\u5c5e\u6027\u503c\n    MyBeanFactoryPostProcessor beanFactoryPostProcessor = new MyBeanFactoryPostProcessor();\n    beanFactoryPostProcessor.postProcessBeanFactory(beanFactory);\n\n    \/\/ 4. Bean\u5b9e\u4f8b\u5316\u4e4b\u540e\uff0c\u4fee\u6539 Bean \u5c5e\u6027\u4fe1\u606f\n    MyBeanPostProcessor beanPostProcessor = new MyBeanPostProcessor();\n    beanFactory.addBeanPostProcessor(beanPostProcessor);\n\n    \/\/ 5. \u83b7\u53d6Bean\u5bf9\u8c61\u8c03\u7528\u65b9\u6cd5\n    UserService userService = beanFactory.getBean(\"userService\", UserService.class);\n    String result = userService.queryUserInfo();\n    System.out<\/em>.println(\"\u6d4b\u8bd5\u7ed3\u679c\uff1a\" + result);\n}<\/code><\/pre>\n\n\n\n
                                                          \u6d4b\u8bd5\u7ed3\u679c\uff1a<\/p>\n\n\n\n
                                                          \u6d4b\u8bd5\u7ed3\u679c\uff1aCMD137,\u6539\u4e3a\uff1a\u5b57\u8282\u8df3\u52a8,\u6539\u4e3a\uff1a\u5317\u4eac\n\nProcess finished with exit code 0<\/code><\/pre>\n\n\n\n
                                                          \u901a\u8fc7\u6d4b\u8bd5\u7ed3\u679c\u53ef\u4ee5\u770b\u5230\uff0c\u6211\u4eec\u914d\u7f6e\u7684\u5c5e\u6027\u4fe1\u606f\u5df2\u7ecf\u4e0e spring.xml \u914d\u7f6e\u6587\u4ef6\u4e2d\u4e0d\u4e00\u6837\u4e86\u3002<\/p>\n\n\n\n
                                                          \u4f7f\u7528\u5e94\u7528\u4e0a\u4e0b\u6587\uff1a<\/h3>\n\n\n\n
                                                          @Test
                                                          public void test_xml() {
                                                              \/\/ 1.\u521d\u59cb\u5316 BeanFactory
                                                              ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(\"classpath:springPostProcessor.xml\");

                                                              \/\/ 2. \u83b7\u53d6Bean\u5bf9\u8c61\u8c03\u7528\u65b9\u6cd5
                                                              UserService userService = applicationContext.getBean(\"userService\", UserService.class);
                                                              String result = userService.queryUserInfo();
                                                              System.out<\/em>.println(\"\u6d4b\u8bd5\u7ed3\u679c\uff1a\" + result);
                                                          }<\/code><\/pre>\n\n\n\n
                                                          \u6d4b\u8bd5\u7ed3\u679c\uff1a<\/p>\n\n\n\n
                                                          \u6d4b\u8bd5\u7ed3\u679c\uff1aCMD137,\u6539\u4e3a\uff1a\u5b57\u8282\u8df3\u52a8,\u6539\u4e3a\uff1a\u5317\u4eac\n\nProcess finished with exit code 0<\/code><\/pre>\n\n\n\n
                                                          \u4f7f\u7528\u65b0\u589e\u52a0\u7684 ClassPathXmlApplicationContext \u5e94\u7528\u4e0a\u4e0b\u6587\u7c7b\uff0c\u518d\u64cd\u4f5c\u8d77\u6765\u5c31\u65b9\u4fbf\u591a\u4e86\uff0c\u8fd9\u624d\u662f\u9762\u5411\u7528\u6237\u4f7f\u7528\u7684\u7c7b<\/em>\uff0c\u5728\u8fd9\u91cc\u53ef\u4ee5\u4e00\u6b65\u628a\u914d\u7f6e\u6587\u4ef6\u4ea4\u7ed9 ClassPathXmlApplicationContext\uff0c\u4e5f\u4e0d\u9700\u8981\u7ba1\u7406\u4e00\u4e9b\u81ea\u5b9a\u4e49\u5b9e\u73b0\u7684 Spring \u63a5\u53e3\u7684\u7c7b\u3002<\/p>\n\n\n\n
                                                          Step 7\uff1a\u521d\u59cb\u5316\u548c\u9500\u6bc1\u65b9\u6cd5\uff1a<\/h1>\n\n\n\n
                                                          \u76ee\u6807\uff1a<\/h2>\n\n\n\n
                                                          Spring \u5bb9\u5668\u7ba1\u7406 Bean \u65f6\uff0c\u5e0c\u671b\u8ba9\u7528\u6237\u80fd\u5728 Bean \u521b\u5efa\u4e0e\u9500\u6bc1\u7684\u7279\u5b9a\u65f6\u673a\u6267\u884c\u81ea\u5b9a\u4e49\u52a8\u4f5c\uff0c\u6bd4\u5982\u6570\u636e\u52a0\u8f7d\u3001\u8d44\u6e90\u6e05\u7406\u6216\u8fde\u63a5\u5173\u95ed\u3002\u8fd9\u4e9b\u903b\u8f91\u5982\u679c\u4ea4\u7531 Spring \u7ba1\u7406\uff0c\u4f1a\u66f4\u52a0\u4f18\u96c5\u3001\u5b89\u5168\u3002<\/p>\n\n\n\n
                                                          \u8bbe\u8ba1\uff1a<\/h2>\n\n\n\n
                                                          \u4e24\u79cd\u65b9\u5f0f\u58f0\u660e\u521d\u59cb\u5316\/\u9500\u6bc1\u903b\u8f91<\/h3>\n\n\n\n
                                                            \n
                                                          • \u63a5\u53e3\u65b9\u5f0f<\/strong>\uff1a\u5b9e\u73b0 InitializingBean.afterPropertiesSet()<\/code> \u4e0e DisposableBean.destroy()<\/code>\u3002<\/li>\n\n\n\n
                                                          • \u914d\u7f6e\u65b9\u5f0f<\/strong>\uff1a\u5728 XML \u4e2d\u4f7f\u7528 init-method=\"\u2026\u201d<\/code> \u4e0e destroy-method=\"\u2026\u201d<\/code>\uff0cSpring \u901a\u8fc7\u53cd\u5c04\u8c03\u7528\u5bf9\u5e94\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n\n\n\n
                                                            \u4e24\u79cd\u65b9\u5f0f\u90fd\u4f1a\u5b9e\u73b0\u3002<\/p>\n\n\n\n
                                                            \"\"<\/div><\/figure>\n\n\n\n
                                                            \u521d\u59cb\u5316\u903b\u8f91\uff1a<\/h3>\n\n\n\n
                                                            \u5f53 Bean \u5b8c\u6210\u5b9e\u4f8b\u5316\u4e0e\u4f9d\u8d56\u6ce8\u5165\u540e\uff0cSpring \u4f1a\u6ce8\u518c\u521d\u59cb\u5316\u56de\u8c03<\/strong>\uff0c\u8fd9\u91cc\u4e0d\u9700\u8981\u50cf\u9500\u6bc1\u90a3\u6837\u4fdd\u5b58\u5230 disposableBeans<\/code>\uff0c\u800c\u662f\u76f4\u63a5\u5728\u5f53\u524d\u521b\u5efa\u6d41\u7a0b\u91cc\u8c03\u7528<\/strong>\u3002<\/p>\n\n\n\n
                                                            \u56e0\u4e3a\u63a5\u53e3\u8c03\u7528\uff08afterPropertiesSet<\/code>\uff09\u548c\u53cd\u5c04\u8c03\u7528\uff08init-method<\/code>\uff09\u662f\u4e24\u79cd\u65b9\u5f0f\uff0c\u6240\u4ee5 Spring \u4e5f\u6709\u4e00\u4e2a\u9002\u914d\u5668\u7c7b<\/strong>\uff0c\u5728 mini-spring \u91cc\u53eb InitializingBeanAdapter<\/code><\/strong>\uff08\u5728\u771f Spring \u91cc\u662f invokeInitMethods<\/code> \u91cc\u7684\u903b\u8f91\uff09\uff0c\u5b83\u4f1a\u7edf\u4e00\u5904\u7406\uff1a<\/p>\n\n\n\n
                                                              \n
                                                            1. \u5982\u679c Bean \u5b9e\u73b0\u4e86 InitializingBean<\/code>\uff0c\u76f4\u63a5\u8c03\u7528 afterPropertiesSet()<\/code><\/li>\n\n\n\n
                                                            2. \u5982\u679c\u914d\u7f6e\u4e86 init-method<\/code>\uff0c\u901a\u8fc7\u53cd\u5c04\u8c03\u7528\u5bf9\u5e94\u65b9\u6cd5<\/li>\n\n\n\n
                                                            3. \u4e24\u8005\u90fd\u5b58\u5728\u65f6\uff0c\u63a5\u53e3\u8c03\u7528\u4f18\u5148\uff0c\u53cd\u5c04\u8c03\u7528\u540e\u6267\u884c<\/li>\n<\/ol>\n\n\n\n
                                                              \n\n\n\n
                                                              \u9500\u6bc1\u903b\u8f91\uff1a<\/h3>\n\n\n\n
                                                              \u9500\u6bc1\u6ce8\u518c\uff1a<\/h4>\n\n\n\n
                                                              Bean \u521b\u5efa\u5b8c\u4ee5\u540e\uff0c\u5982\u679c\u5b83\u6709\u9500\u6bc1\u903b\u8f91\uff0cSpring \u4f1a\u628a\u5b83\u6ce8\u518c<\/strong>\u5230 DefaultSingletonBeanRegistry<\/code> \u7684 disposableBeans<\/code> \u5bb9\u5668\u91cc\uff1a<\/p>\n\n\n\n
                                                              private final Map<String, DisposableBean> disposableBeans = new LinkedHashMap<>();\n<\/code><\/code><\/pre>\n\n\n\n
                                                              \u6ce8\u518c\u7684\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n
                                                                \n
                                                              1. Spring \u68c0\u67e5\u8fd9\u4e2a Bean \u662f\u5426\u5b9e\u73b0\u4e86 DisposableBean<\/code>\uff0c\u6216\u8005\u5b9a\u4e49\u4e86 destroy-method<\/code>\u3002<\/li>\n\n\n\n
                                                              2. \u5982\u679c\u6709\uff0c\u5219\u7528 DisposableBeanAdapter<\/code><\/strong> \u5c01\u88c5\u6210\u4e00\u4e2a\u7edf\u4e00\u7684 DisposableBean<\/code> \u5bf9\u8c61\u3002<\/li>\n\n\n\n
                                                              3. \u628a\u8fd9\u4e2a\u9002\u914d\u5668\u5bf9\u8c61\u653e\u8fdb disposableBeans<\/code> \u91cc\uff0ckey \u662f beanName\u3002<\/li>\n<\/ol>\n\n\n\n
                                                                \n
                                                                \u8fd9\u6837\u505a\u7684\u597d\u5904\uff1a
                                                                \u540e\u7eed\u9500\u6bc1\u65f6\uff0c\u53ea\u8981\u904d\u5386 disposableBeans<\/code>\uff0c\u4f9d\u6b21\u8c03\u7528 .destroy()<\/code>\uff0c\u4e0d\u9700\u8981\u7ba1\u5177\u4f53\u662f\u63a5\u53e3\u8fd8\u662f\u53cd\u5c04\u3002<\/p>\n<\/blockquote>\n\n\n\n
                                                                \u89e6\u53d1\u9500\u6bc1\uff08\u5173\u95ed\u5bb9\u5668\u65f6\uff09<\/h4>\n\n\n\n
                                                                \u9500\u6bc1\u6709\u4e24\u79cd\u89e6\u53d1\u65b9\u5f0f\uff1a<\/p>\n\n\n\n
                                                                  \n
                                                                • \u81ea\u52a8\u89e6\u53d1<\/strong>\uff1a\u6ce8\u518c JVM \u94a9\u5b50<\/strong>\uff08Runtime.getRuntime().addShutdownHook(...)<\/code>\uff09\n
                                                                    \n
                                                                  • \u5f53 JVM \u6b63\u5e38\u9000\u51fa\u65f6\u4f1a\u81ea\u52a8\u8c03\u7528\u5bb9\u5668\u7684 close()<\/code> \u65b9\u6cd5\uff0c\u4ece\u800c\u6267\u884c\u9500\u6bc1\u903b\u8f91\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                                  • \u624b\u52a8\u89e6\u53d1<\/strong>\uff1a\u663e\u5f0f\u8c03\u7528 ApplicationContext.close()<\/code>\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                    \u65e0\u8bba\u54ea\u79cd\u65b9\u5f0f\uff0c\u90fd\u4f1a\u8fdb\u5165 AbstractApplicationContext#doClose()<\/code> \u2192 DefaultSingletonBeanRegistry#destroySingletons()<\/code>\uff1a<\/p>\n\n\n\n
                                                                      \n
                                                                    1. \u904d\u5386 disposableBeans<\/code>\uff0c\u4f9d\u6b21\u8c03\u7528\u9002\u914d\u5668\u7684 destroy()<\/code> \u65b9\u6cd5\u3002<\/li>\n\n\n\n
                                                                    2. \u9002\u914d\u5668\u5185\u90e8\uff1a\n
                                                                        \n
                                                                      • \u5982\u679c\u5b9e\u73b0\u4e86 DisposableBean<\/code>\uff0c\u8c03\u7528 destroy()<\/code>\u3002<\/li>\n\n\n\n
                                                                      • \u5982\u679c\u914d\u7f6e\u4e86 destroy-method<\/code>\uff0c\u7528\u53cd\u5c04\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                                                                        \n\n\n\n
                                                                        \u7b80\u5316\u4e3a\uff1a<\/p>\n\n\n\n
                                                                        \u521d\u59cb\u5316<\/strong>\uff1a<\/p>\n\n\n\n
                                                                          \n
                                                                        1. Bean \u521b\u5efa\u5b8c\u6bd5 \u2192 \u5c5e\u6027\u586b\u5145\u5b8c\u6210<\/li>\n\n\n\n
                                                                        2. \u8c03\u7528 afterPropertiesSet()<\/code>\uff08\u63a5\u53e3\u65b9\u5f0f\uff09<\/li>\n\n\n\n
                                                                        3. \u8c03\u7528 init-method<\/code> \u65b9\u6cd5\uff08\u914d\u7f6e\u65b9\u5f0f\uff09<\/li>\n<\/ol>\n\n\n\n
                                                                          \u9500\u6bc1<\/strong>\uff1a<\/p>\n\n\n\n
                                                                            \n
                                                                          1. Bean \u5b9e\u4f8b\u88ab\u6ce8\u518c\u8fdb disposableBeans<\/code><\/li>\n\n\n\n
                                                                          2. \u5173\u95ed\u5bb9\u5668 \u2192 \u904d\u5386 disposableBeans<\/code><\/li>\n\n\n\n
                                                                          3. \u8c03\u7528 destroy()<\/code>\uff08\u63a5\u53e3\u65b9\u5f0f\uff09<\/li>\n\n\n\n
                                                                          4. \u8c03\u7528 destroy-method<\/code>\uff08\u914d\u7f6e\u65b9\u5f0f\uff09<\/li>\n<\/ol>\n\n\n\n
                                                                            \n\n\n\n
                                                                            Spring \u5e94\u7528\u4e0a\u4e0b\u6587\u548c\u5bf9Bean\u5bf9\u8c61\u6269\u5c55\u673a\u5236\u7684\u7c7b\u5173\u7cfb\uff1a<\/h3>\n\n\n\n
                                                                            \"\"<\/div><\/figure>\n\n\n\n
                                                                            \u6b64\u5904Spring \u5728\u63a5\u53e3\u5b9e\u73b0\u4e0a\u7684\u4e00\u79cd\u201c\u5206\u5c42\u89e3\u8026\u201d\u8bbe\u8ba1\u6bd4\u8f83\u7279\u6b8a\uff08\u4e0d\u662f\u5e38\u89c1\u7684\u201c\u8c01\u5b9e\u73b0\u63a5\u53e3\u8c01\u81ea\u5df1\u5199\u5b9e\u73b0\u4ee3\u7801\u201d\u6a21\u5f0f\uff09\uff1a<\/p>\n\n\n\n
                                                                            ConfigurableBeanFactory\uff08\u63a5\u53e3\uff0c\u5b9a\u4e49 destroySingletons \u65b9\u6cd5\uff09
                                                                            \u2191
                                                                            AbstractBeanFactory\uff08\u62bd\u8c61\u7c7b\uff0c\u6ca1\u5b9e\u73b0 destroySingletons\uff09
                                                                            \u2191
                                                                            DefaultSingletonBeanRegistry\uff08\u7236\u7c7b\uff0c\u5b9e\u73b0\u4e86 destroySingletons\uff09<\/p>\n\n\n\n
                                                                            \u7b80\u5355\u6f14\u793a\uff1a<\/p>\n\n\n\n
                                                                            \/\/ \u5b9a\u4e49\u80fd\u529b\npublic interface ConfigurableBeanFactory {\n    void destroySingletons();\n}\n\n\/\/ \u62bd\u8c61\u7c7b\uff1a\u5b9e\u73b0\u4e86\u5f88\u591a\u901a\u7528 BeanFactory \u903b\u8f91\uff0c\u4f46\u4e0d\u7ba1\u9500\u6bc1\u7ec6\u8282\npublic abstract class AbstractBeanFactory implements ConfigurableBeanFactory {\n    \/\/ \u8fd9\u91cc destroySingletons \u6ca1\u6709\u5b9e\u73b0\n}\n\n\/\/ \u771f\u6b63\u5b9e\u73b0\u9500\u6bc1\u903b\u8f91\u7684\u7c7b\uff08\u540c\u65f6\u4e5f\u662f AbstractBeanFactory \u7684\u7236\u7c7b\uff09\npublic class DefaultSingletonBeanRegistry {\n    @Override\n    public void destroySingletons() {\n        \/\/ \u904d\u5386\u5355\u4f8b\u6c60\uff0c\u8c03\u7528 destroy \u65b9\u6cd5\n    }\n}\n<\/code><\/pre>\n\n\n\n
                                                                            \u5173\u952e\u70b9\uff1a\u63a5\u53e3\u65b9\u6cd5\u7684\u5b9e\u73b0\u4e0d\u5728\u76f4\u63a5\u7684\u5b9e\u73b0\u7c7b\u91cc\uff0c\u800c\u662f\u5728\u8fd9\u4e2a\u5b9e\u73b0\u7c7b\u7684\u7236\u7c7b\u4e2d\u5b8c\u6210<\/strong>\u3002<\/p>\n\n\n\n
                                                                            \u4e3a\u4ec0\u4e48\u8fd9\u6837\u8bbe\u8ba1\uff1f<\/p>\n\n\n\n
                                                                            \u8fd9\u662f Spring \u5206\u5c42\u9694\u79bb\u804c\u8d23<\/strong> \u7684\u4f53\u73b0\uff1a<\/p>\n\n\n\n
                                                                            \u5c42\u7ea7<\/th>\u4e3b\u8981\u804c\u8d23<\/th>\u4e3a\u4ec0\u4e48\u653e\u5728\u8fd9\u91cc<\/th><\/tr><\/thead>
                                                                            ConfigurableBeanFactory<\/code>\uff08\u63a5\u53e3\uff09<\/td>\u53ea\u5b9a\u4e49\u201cBeanFactory \u9700\u8981\u652f\u6301\u7684\u53ef\u914d\u7f6e\u80fd\u529b\u201d\uff0c\u6bd4\u5982\u9500\u6bc1<\/td>\u804c\u8d23\u5355\u4e00\uff0c\u544a\u8bc9\u5916\u754c\u201c\u6211\u80fd\u5e72\u5565\u201d<\/td><\/tr>
                                                                            AbstractBeanFactory<\/code>\uff08\u62bd\u8c61\u7c7b\uff09<\/td>\u63d0\u4f9b\u901a\u7528\u7684 Bean \u521b\u5efa\u3001\u83b7\u53d6\u903b\u8f91\uff0c\u4e0d\u5173\u5fc3\u5177\u4f53\u9500\u6bc1\u7ec6\u8282<\/td>\u4fdd\u6301\u9ad8\u5185\u805a\uff0c\u4e0d\u63ba\u6742\u5355\u4f8b\u6ce8\u518c\/\u9500\u6bc1\u7684\u5b9e\u73b0<\/td><\/tr>
                                                                            DefaultSingletonBeanRegistry<\/code>\uff08\u7236\u7c7b\uff09<\/td>\u53ea\u7ba1\u7406\u5355\u4f8b\u6c60\u7684\u589e\u5220\u6539\u67e5 & \u9500\u6bc1<\/td>\u9500\u6bc1\u903b\u8f91\u548c\u5355\u4f8b\u7ba1\u7406\u653e\u4e00\u8d77\uff0c\u89e3\u8026 BeanFactory \u6838\u5fc3\u903b\u8f91<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                                                                            \n\n\n\n
                                                                            \u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
                                                                            1.\u5b9a\u4e49\u521d\u59cb\u5316\u548c\u9500\u6bc1\u65b9\u6cd5\u7684\u63a5\u53e3<\/h3>\n\n\n\n
                                                                            \/\/ \u521d\u59cb\u5316\u63a5\u53e3
                                                                            public interface InitializingBean {
                                                                                \/**
                                                                            <\/em>     * Bean <\/em>\u5904\u7406\u4e86\u5c5e\u6027\u586b\u5145\u540e\u8c03\u7528
                                                                            <\/em>     <\/em>*\/
                                                                            <\/em>    <\/em>void afterPropertiesSet() throws Exception;
                                                                            }<\/code><\/pre>\n\n\n\n
                                                                            \/\/ \u9500\u6bc1\u63a5\u53e3
                                                                            public interface DisposableBean {
                                                                                \/\/ \u9500\u6bc1\u65b9\u6cd5
                                                                                void destroy() throws Exception;

                                                                            }<\/code><\/pre>\n\n\n\n
                                                                            2.Bean\u5c5e\u6027\u5b9a\u4e49\u65b0\u589e\u521d\u59cb\u5316\u548c\u9500\u6bc1\uff1a<\/h3>\n\n\n\n
                                                                            public class BeanDefinition {\n\n    private Class beanClass;\n\n    private PropertyValues propertyValues;\n\n    private String initMethodName;\n    \n    private String destroyMethodName;\n    \n    \/\/ ...get\/set\n}\n<\/code><\/pre>\n\n\n\n
                                                                            \u8fd9\u4e24\u4e2a\u5c5e\u6027\u662f\u4e3a\u4e86\u5728 spring.xml \u914d\u7f6e\u7684 Bean \u5bf9\u8c61\u4e2d\uff0c\u53ef\u4ee5\u914d\u7f6e init-method=\"initDataMethod\" destroy-method=\"destroyDataMethod\"<\/code> \u64cd\u4f5c\u3002<\/p>\n\n\n\n
                                                                            Bean\u5c5e\u6027\u5b9a\u4e49\u589e\u52a0\u521d\u59cb\u5316\u548c\u9500\u6bc1\u540e\uff0c\u8fd8\u9700\u8981\u5728XmlBeanDefinitionReader<\/code>\u7c7b\u4e2d\uff0c\u589e\u52a0\u5bf9\u65b0\u589e\u5c5e\u6027\u7684\u8bfb\u53d6\uff0c\u5e76\u6dfb\u52a0\u5230BeanDefinition\u4e2d\uff1a<\/p>\n\n\n\n
                                                                            public class XmlBeanDefinitionReader extends AbstractBeanDefinitionReader {\n\n     ......\n    \n    \/\/doLoadBeanDefinitions\u4e2d\u589e\u52a0\u5bf9init-method\u3001destroy-method\u7684\u8bfb\u53d6\n    protected void doLoadBeanDefinitions(InputStream inputStream) throws ClassNotFoundException{\n        Document doc = XmlUtil.readXML(inputStream);\n        Element root = doc.getDocumentElement();\n        NodeList childNodes = root.getChildNodes();\n\n        for (int i = 0; i < childNodes.getLength(); i++) {\n            if (!(childNodes.item(i) instanceof Element)) {\n                continue;\n            }\n            if (!\"bean\".equals(childNodes.item(i).getNodeName())) {\n                continue;\n            }\n\n            Element bean = (Element) childNodes.item(i);\n            String id = bean.getAttribute(\"id\");\n            String name = bean.getAttribute(\"name\");\n            String className = bean.getAttribute(\"class\");\n            \n            \/\/\u589e\u52a0\u5bf9init-method\u3001destroy-method\u7684\u8bfb\u53d6\n            String initMethod = bean.getAttribute(\"init-method\");\n            String destroyMethodName = bean.getAttribute(\"destroy-method\");\n\n            Class<?> clazz = Class.forName(className);\n            String beanName = StrUtil.isNotEmpty(id) ? id : name;\n            if (StrUtil.isEmpty(beanName)){\n                beanName = StrUtil.lowerFirst(clazz.getSimpleName());\n            }\n\n            BeanDefinition beanDefinition = new BeanDefinition(clazz);\n            \n            \/\/\u989d\u5916\u8bbe\u7f6e\u5230beanDefinition\u4e2d\n            beanDefinition.setInitMethodName(initMethod);\n            beanDefinition.setDestroyMethodName(destroyMethodName);\n\n            for (int j = 0; j < bean.getChildNodes().getLength(); j++) {\n                if (!(bean.getChildNodes().item(j) instanceof Element)) {\n                    continue;\n                }\n                if (!\"property\".equals(bean.getChildNodes().item(j).getNodeName())) {\n                    continue;\n                }\n                \/\/\u89e3\u6790\u6807\u7b7e\uff1aproperty\n                Element property = (Element) bean.getChildNodes().item(j);\n                String attrName = property.getAttribute(\"name\");\n                String attrValue = property.getAttribute(\"value\");\n                String attrRef = property.getAttribute(\"ref\");\n                Object value = StrUtil.isNotEmpty(attrRef) ? new BeanReference(attrRef) : attrValue;\n                PropertyValue propertyValue = new PropertyValue(attrName, value);\n                beanDefinition.getPropertyValues().addPropertyValue(propertyValue);\n            }\n\n            if (getRegistry().containsBeanDefinition(beanName)) {\n                throw new BeansException(\"Duplicate beanName[\"+beanName+\"] is not allowed\");\n            }\n            getRegistry().registerBeanDefinition(beanName,beanDefinition);\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n
                                                                            3.\u5b9e\u73b0 \u6267\u884c Bean \u5bf9\u8c61\u7684\u521d\u59cb\u5316\u65b9\u6cd5 invokeInitMethods\uff1a<\/h3>\n\n\n\n
                                                                            AbstractAutowireCapableBeanFactory \u4e2d\uff1a<\/p>\n\n\n\n
                                                                            private void invokeInitMethods(String beanName, Object bean, BeanDefinition beanDefinition) throws Exception {\n        \/\/ 1. \u5b9e\u73b0\u63a5\u53e3 InitializingBean\n        if (bean instanceof InitializingBean) {\n            ((InitializingBean) bean).afterPropertiesSet();\n        }\n\n        \/\/ 2. \u914d\u7f6e\u4fe1\u606f init-method\n        String initMethodName = beanDefinition.getInitMethodName();\n        if (StrUtil.isNotEmpty(initMethodName)) {\n            Method initMethod = beanDefinition.getBeanClass().getMethod(initMethodName);\n            if (null == initMethod) {\n                throw new BeansException(\"Could not find an init method named '\" + initMethodName + \"' on bean with name '\" + beanName + \"'\");\n            }\n            initMethod.invoke(bean);\n        }\n    }<\/code><\/pre>\n\n\n\n
                                                                            4.\u5b9a\u4e49\u9500\u6bc1\u65b9\u6cd5\u9002\u914d\u5668(\u63a5\u53e3\u548c\u914d\u7f6e)\uff1a<\/h3>\n\n\n\n
                                                                            \u6ce8\u610f\u539f\u6559\u6750\u7684\u95ee\u9898\uff1a\u8fd9\u91cc\u8bf4\u201c\u5224\u65ad\u662f\u4e3a\u4e86\u907f\u514d\u4e8c\u6b21\u6267\u884c\u9500\u6bc1\u201d\u5e76\u4e0d\u51c6\u786e\u6216\u8005\u8bf4\u662f\u9519\u7684\uff0c\u66f4\u51c6\u786e\u7684\u63cf\u8ff0\u662f\uff1a<\/p>\n\n\n\n
                                                                            \u5224\u65ad\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u907f\u514d\u540c\u4e00\u4e2a\u9500\u6bc1\u65b9\u6cd5\u88ab\u8c03\u7528\u4e24\u6b21\uff0c\u800c\u4e0d\u662f\u907f\u514d\u6574\u4e2a\u9500\u6bc1\u52a8\u4f5c\u6267\u884c\u4e24\u6b21\u3002<\/strong><\/p>\n\n\n\n
                                                                            public class DisposableBeanAdapter implements DisposableBean {\n\n    private final Object bean;\n    private final String beanName;\n    private String destroyMethodName;\n\n    public DisposableBeanAdapter(Object bean, String beanName, BeanDefinition beanDefinition) {\n        this.bean = bean;\n        this.beanName = beanName;\n        this.destroyMethodName = beanDefinition.getDestroyMethodName();\n    }\n\n    @Override\n    public void destroy() throws Exception {\n        \/\/ 1. \u5b9e\u73b0\u63a5\u53e3 DisposableBean\n        if (bean instanceof DisposableBean) {\n            ((DisposableBean) bean).destroy();\n        }\n\n        \/\/ 2. \u914d\u7f6e\u4fe1\u606f destroy-method {\u5224\u65ad\u662f\u4e3a\u4e86\u907f\u514d\u540c\u4e00\u4e2a\u9500\u6bc1\u65b9\u6cd5\u88ab\u8c03\u7528\u4e24\u6b21\uff0c\u4f46\u662fspring\u5141\u8bb8\u6267\u884c\u4e24\u4e2a\u4e0d\u540c\u7684\u9500\u6bc1\u52a8\u4f5c}\n        if (StrUtil.isNotEmpty(destroyMethodName) && !(bean instanceof DisposableBean && \"destroy\".equals(this.destroyMethodName))) {\n            Method destroyMethod = bean.getClass().getMethod(destroyMethodName);\n            if (null == destroyMethod) {\n                throw new BeansException(\"Couldn't find a destroy method named '\" + destroyMethodName + \"' on bean with name '\" + beanName + \"'\");\n            }\n            destroyMethod.invoke(bean);\n        }\n\n    }\n\n}\n<\/code><\/pre>\n\n\n\n
                                                                            5.\u521b\u5efaBean\u65f6\u6ce8\u518c\u9500\u6bc1\u65b9\u6cd5\u5bf9\u8c61\uff1a<\/h3>\n\n\n\n
                                                                            \u5728\u521b\u5efa Bean \u5bf9\u8c61\u7684\u5b9e\u4f8b\u7684\u65f6\u5019\uff0c\u9700\u8981\u6ce8\u518c\u9500\u6bc1\u65b9\u6cd5\uff0c\u65b9\u4fbf\u540e\u7eed\u6267\u884c\u9500\u6bc1\u52a8\u4f5c\u8fdb\u884c\u8c03\u7528\u3002
                                                                            \u6ce8\u518c\u8fd9\u4e2a\u65b9\u6cd5\u5c31\u8981\u6709\u4e00\u4e2a\u5bb9\u5668\uff1aDefaultSingletonBeanRegistry \u4e2d\u65b0\u589e\u52a0\u7684 Map<String, DisposableBean> disposableBeans<\/code>\u3002\u8fd9\u4e2a\u63a5\u53e3\u7684\u65b9\u6cd5\u6700\u7ec8\u53ef\u4ee5\u88ab\u7c7b AbstractApplicationContext \u7684 close \u65b9\u6cd5\u901a\u8fc7 getBeanFactory().destroySingletons()<\/code> \u8c03\u7528\u3002<\/p>\n\n\n\n
                                                                            5.1DefaultSingletonBeanRegistry \u4e2d\u65b0\u589e\u9500\u6bc1\u65b9\u6cd5\u5bf9\u8c61\u5bb9\u5668\u3001\u6ce8\u518c\u65b9\u6cd5\u3001\u5b9e\u73b0destroySingletons<\/code>\u65b9\u6cd5\uff1a<\/h4>\n\n\n\n
                                                                            \u6ce8\u610f\u8fd9\u91cc\u9006\u5e8f\u9500\u6bc1\u7684\u7ec6\u8282\uff1a<\/p>\n\n\n\n
                                                                            \/\/\u6ce8\u518c\u4e86\u9500\u6bc1\u56de\u8c03\u7684 Bean \u5bf9\u8c61\u7684\u5bb9\u5668\n    private final Map<String, DisposableBean> disposableBeans = new HashMap<>();\n\n    public void registerDisposableBean(String beanName, DisposableBean bean) {\n        disposableBeans.put(beanName, bean);\n    }\n\n    \/**\n     * \u9500\u6bc1\u6240\u6709\u5355\u4f8b Bean \u5bf9\u8c61\u3002\n     *\n     * \u8be5\u65b9\u6cd5\u4f1a\u904d\u5386\u5bb9\u5668\u4e2d\u6240\u6709\u5df2\u6ce8\u518c\u7684\u5b9e\u73b0\u4e86 DisposableBean \u63a5\u53e3\u7684 Bean\uff08\u5b58\u50a8\u5728 disposableBeans \u4e2d\uff09\uff0c\n     * \u5e76\u6309\u6ce8\u518c\u987a\u5e8f\u7684\u9006\u5e8f\u4f9d\u6b21\u8c03\u7528\u5b83\u4eec\u7684 destroy() \u65b9\u6cd5\u5b8c\u6210\u9500\u6bc1\u3002\n     *\n     * \u9006\u5e8f\u9500\u6bc1\u662f\u4e3a\u4e86\u4fdd\u8bc1\u4f9d\u8d56\u5173\u7cfb\u6b63\u786e\u91ca\u653e\uff08\u5148\u9500\u6bc1\u4f9d\u8d56\u8005\uff0c\u518d\u9500\u6bc1\u88ab\u4f9d\u8d56\u8005\uff09\u3002\n     *\n     * \u9500\u6bc1\u8fc7\u7a0b\u4e2d\u5982\u679c\u53d1\u751f\u5f02\u5e38\uff0c\u4f1a\u5305\u88c5\u6210 BeansException \u5e76\u629b\u51fa\uff0c\u786e\u4fdd\u8c03\u7528\u8005\u80fd\u611f\u77e5\u9500\u6bc1\u5931\u8d25\u3002\n     *\/\n    public void destroySingletons() {\n        Set<String> keySet = this.disposableBeans.keySet();\n        Object[] disposableBeanNames = keySet.toArray();\n\n        \/\/i\u5012\u5e8f\u904d\u5386\uff1a\u9006\u5e8f\u9500\u6bc1\u65f6\u56e0\u4e3a\u88ab\u52a0\u5165\u5bb9\u5668\u7684\u987a\u5e8f\u5c31\u6697\u542b\u4e86\u4f9d\u8d56\u987a\u5e8f\n        for (int i = disposableBeanNames.length - 1; i >= 0; i--) {\n            Object beanName = disposableBeanNames[i];\n            DisposableBean disposableBean = disposableBeans.remove(beanName);\n            try {\n                disposableBean.destroy();\n            } catch (Exception e) {\n                throw new BeansException(\"Destroy method on bean with name '\" + beanName + \"' threw an exception\", e);\n            }\n        }\n    }<\/code><\/pre>\n\n\n\n
                                                                            5.2  \u5728AbstractAutowireCapableBeanFactory \u4e2d\u6ce8\u518c DisposableBean\u3002<\/h4>\n\n\n\n
                                                                            ......\n@Override\n    protected Object createBean(String beanName, BeanDefinition beanDefinition, Object[] args) throws BeansException {\n        Object bean = null;\n        try {\n            \/\/\u521b\u5efa\u5b9e\u4f8b\n            bean = createBeanInstance(beanDefinition, beanName, args);\n            \/\/\u6ce8\u5165\u5c5e\u6027\n            applyPropertyValues(bean, beanName, beanDefinition);\n            \/\/ \u6267\u884c Bean \u7684\u521d\u59cb\u5316\u65b9\u6cd5\u548c BeanPostProcessor \u7684\u524d\u7f6e\u548c\u540e\u7f6e\u5904\u7406\u65b9\u6cd5\n            bean = initializeBean(beanName, bean, beanDefinition);\n        } catch (Exception e) {\n            throw new BeansException(\"Instantiation of bean failed\", e);\n        }\n\n        \/\/\u6ce8\u518c\u53ef\u9500\u6bc1\u7684 Bean\n        registerDisposableBeanIfNecessary(beanName, bean, beanDefinition);\n\n        addSingleton(beanName, bean);\n        return bean;\n    }\n.......\n\/**\n     * \u82e5 Bean \u5b9e\u73b0\u4e86 DisposableBean \u6216\u914d\u7f6e\u4e86\u9500\u6bc1\u65b9\u6cd5\uff0c\u5219\u6ce8\u518c\u5176\u9500\u6bc1\u9002\u914d\u5668\u3002\n     *\/\n    protected void registerDisposableBeanIfNecessary(String beanName, Object bean, BeanDefinition beanDefinition) {\n        if (bean instanceof DisposableBean || StrUtil.isNotEmpty(beanDefinition.getDestroyMethodName())) {\n            \/\/ \u4f7f\u7528 DisposableBeanAdapter \u9002\u914d\u5668\u5305\u88c5 Bean\n            \/\/ \u9002\u914d\u5668\u5b9e\u73b0\u4e86 DisposableBean \u63a5\u53e3\uff0c\n            \/\/ \u8fd9\u6837\u65e0\u8bba Bean \u662f\u5b9e\u73b0\u63a5\u53e3\u9500\u6bc1\uff0c\u8fd8\u662f\u901a\u8fc7\u914d\u7f6e\u9500\u6bc1\u65b9\u6cd5\uff0c\n            \/\/ \u90fd\u80fd\u7edf\u4e00\u4ee5 DisposableBean \u5f62\u5f0f\u6ce8\u518c\u5230\u5bb9\u5668\uff0c\u65b9\u4fbf\u7edf\u4e00\u7ba1\u7406\u548c\u8c03\u7528\u9500\u6bc1\u903b\u8f91\u3002\n            registerDisposableBean(beanName, new DisposableBeanAdapter(bean, beanName, beanDefinition));\n\n        }\n    }<\/code><\/pre>\n\n\n\n
                                                                            5.3 \u5728\u63a5\u53e3 ConfigurableBeanFactory \u5b9a\u4e49\u4e86 destroySingletons \u9500\u6bc1\u65b9\u6cd5\uff1a<\/h4>\n\n\n\n
                                                                            public interface ConfigurableBeanFactory extends HierarchicalBeanFactory, SingletonBeanRegistry {\n\n    ......\n\n    \/**\n<\/em>     * <\/em>\u9500\u6bc1\u5355\u4f8b\u5bf9\u8c61\n<\/em>     <\/em>*\/\n<\/em>    <\/em>void destroySingletons();\n\n}<\/code><\/pre>\n\n\n\n
                                                                            6.\u865a\u62df\u673a\u5173\u95ed\u94a9\u5b50\u6ce8\u518c\u8c03\u7528\u9500\u6bc1\u65b9\u6cd5\uff1a<\/h3>\n\n\n\n
                                                                            6.1\u5b9a\u4e49\u63a5\u53e3\uff1a<\/h4>\n\n\n\n
                                                                            \u5728 ConfigurableApplicationContext \u63a5\u53e3\u4e2d\u5b9a\u4e49\u6ce8\u518c\u865a\u62df\u673a\u94a9\u5b50\u7684\u65b9\u6cd5 registerShutdownHook<\/code> \u548c\u624b\u52a8\u6267\u884c\u5173\u95ed\u7684\u65b9\u6cd5 close<\/code><\/p>\n\n\n\n
                                                                            \/**
                                                                            <\/em> *  <\/em>\u63d0\u4f9b\u4e86\u5bb9\u5668\u751f\u547d\u5468\u671f\u7ba1\u7406\u548c\u4e0a\u4e0b\u6587\u914d\u7f6e\u7684\u6269\u5c55\u529f\u80fd
                                                                            <\/em> <\/em>*\/
                                                                            <\/em>public interface ConfigurableApplicationContext extends ApplicationContext {

                                                                                \/\/\u5237\u65b0\uff08\u542f\u52a8\uff09\u5bb9\u5668
                                                                                void refresh() throws BeansException;

                                                                                \/\/ \u6ce8\u518c\u4e00\u4e2a\u5173\u95ed\u94a9\u5b50
                                                                                void registerShutdownHook();

                                                                                \/\/ \u5173\u95ed\u5bb9\u5668
                                                                                void close();
                                                                            }<\/code><\/pre>\n\n\n\n
                                                                            6.2\uff1a\u5b9e\u73b0\u6ce8\u518c\u94a9\u5b50\u548c\u5173\u95ed\u5bb9\u5668\u7684\u65b9\u6cd5\uff1a<\/h4>\n\n\n\n
                                                                            public abstract class AbstractApplicationContext extends DefaultResourceLoader implements ConfigurableApplicationContext {\n\n    \/\/ ...\n\n    @Override\n    public void registerShutdownHook() {\n        Runtime.getRuntime().addShutdownHook(new Thread(this::close));\n    }\n\n    @Override\n    public void close() {\n        getBeanFactory().destroySingletons();\n    }\n\n}\n<\/code><\/pre>\n\n\n\n
                                                                            \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
                                                                            \u51c6\u5907\uff1a<\/h3>\n\n\n\n
                                                                            public class UserDao {\n\n    private static Map<String, String> hashMap = new HashMap<>();\n\n    public void initDataMethod(){\n        System.out.println(\"\u6267\u884c\uff1ainit-method\");\n        hashMap.put(\"10001\", \"CMD137\");\n        hashMap.put(\"10002\", \"CMD138\");\n        hashMap.put(\"10003\", \"CMD139\");\n    }\n\n    public void destroyDataMethod(){\n        System.out.println(\"\u6267\u884c\uff1adestroy-method\");\n        hashMap.clear();\n    }\n\n    public String queryUserName(String uId) {\n        return hashMap.get(uId);\n    }\n\n}\n<\/code><\/pre>\n\n\n\n
                                                                            public class UserService implements InitializingBean, DisposableBean {\n\n    private String uId;\n    private String company;\n    private String location;\n    private UserDao userDao;\n\n    @Override\n    public void destroy() throws Exception {\n        System.out.println(\"\u6267\u884c\uff1aUserService.destroy\");\n    }\n\n    @Override\n    public void afterPropertiesSet() throws Exception {\n        System.out.println(\"\u6267\u884c\uff1aUserService.afterPropertiesSet\");\n    }\n\n    \/\/ ...get\/set\n}\n<\/code><\/pre>\n\n\n\n
                                                                            \u914d\u7f6e\u6587\u4ef6\uff1a<\/h3>\n\n\n\n
                                                                            \u57fa\u7840\u914d\u7f6e\uff0c\u65e0BeanFactoryPostProcessor\u3001BeanPostProcessor\uff0c\u5b9e\u73b0\u7c7b<\/strong>\uff1a<\/p>\n\n\n\n
                                                                            <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<beans>\n\n    <bean id=\"userDao\" class=\"com.miniSpring.test.bean.UserDao\" init-method=\"initDataMethod\" destroy-method=\"destroyDataMethod\"\/>\n\n    <bean id=\"userService\" class=\"com.miniSpring.test.bean.UserService\">\n        <property name=\"uId\" value=\"10001\"\/>\n        <property name=\"company\" value=\"\u817e\u8baf\"\/>\n        <property name=\"location\" value=\"\u6df1\u5733\"\/>\n        <property name=\"userDao\" ref=\"userDao\"\/>\n    <\/bean>\n\n<\/beans><\/code><\/pre>\n\n\n\n
                                                                            \u5355\u5143\u6d4b\u8bd5\uff1a<\/h3>\n\n\n\n
                                                                            @Test\npublic void test_xml() {\n    \/\/ 1.\u521d\u59cb\u5316 BeanFactory\n    ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(\"classpath:spring.xml\");\n    applicationContext.registerShutdownHook();      \n\n    \/\/ 2. \u83b7\u53d6Bean\u5bf9\u8c61\u8c03\u7528\u65b9\u6cd5\n    UserService userService = applicationContext.getBean(\"userService\", UserService.class);\n    String result = userService.queryUserInfo();\n    System.out.println(\"\u6d4b\u8bd5\u7ed3\u679c\uff1a\" + result);\n}<\/code><\/pre>\n\n\n\n
                                                                            \u7ed3\u679c\uff1a<\/h3>\n\n\n\n
                                                                            \u6267\u884c\uff1aDao\u7684 init-method\n\u6267\u884c\uff1aUserService.afterPropertiesSet\n\u6d4b\u8bd5\u7ed3\u679c\uff1aCMD137,\u817e\u8baf,\u6df1\u5733\n\u6267\u884c\uff1aUserService.destroy\n\u6267\u884c\uff1aDao\u7684 destroy-method\n\nProcess finished with exit code 0<\/code><\/pre>\n\n\n\n
                                                                            Step8\uff1aAware\u611f\u77e5\u5bb9\u5668\u5bf9\u8c61\uff1a<\/h1>\n\n\n\n
                                                                            \u76ee\u6807\u4e0e\u5fc5\u8981\u6027\uff1a<\/h2>\n\n\n\n
                                                                            \u5728 Spring \u6846\u67b6\u4e2d\uff0cAware \u63a5\u53e3\u65cf<\/strong>\u662f\u4e00\u79cd\u5178\u578b\u7684\u201c\u5bb9\u5668\u611f\u77e5\u673a\u5236\u201d\uff08Container Awareness Mechanism\uff09\uff0c\u5b83\u5141\u8bb8 Bean \u5728\u521d\u59cb\u5316\u9636\u6bb5\u4e3b\u52a8\u83b7\u53d6\u5e76\u5229\u7528\u6846\u67b6\u66b4\u9732\u7684\u91cd\u8981\u7ec4\u4ef6\uff0c\u5982 BeanFactory<\/code>\u3001ApplicationContext<\/code>\u3001ClassLoader<\/code> \u7b49\u3002\u901a\u8fc7\u8fd9\u79cd\u673a\u5236\uff0c\u5f00\u53d1\u8005\u4e0d\u4ec5\u80fd\u591f\u5728 Bean \u5b9e\u4f8b\u5316\u4e4b\u540e\u63a5\u5165\u5bb9\u5668\u7684\u751f\u547d\u5468\u671f\u7ba1\u7406\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u56de\u8c03\u65b9\u5f0f\u589e\u5f3a Bean \u7684\u884c\u4e3a\u80fd\u529b\uff08\u628a\u5bb9\u5668\u4e2d\u7684\u5173\u952e\u5bf9\u8c61\u4f20\u9012\u7ed9 Bean\uff09\uff0c\u4f7f\u5176\u80fd\u591f\u4e0e Spring \u5bb9\u5668\u6df1\u5ea6\u96c6\u6210\u3001\u534f\u540c\u5de5\u4f5c\u3002<\/p>\n\n\n\n
                                                                            \u8bbe\u8ba1\uff1a<\/h2>\n\n\n\n
                                                                            Aware \u63a5\u53e3<\/strong>\u672c\u8eab\u5b9a\u4e49\u4e3a\u7a7a\u63a5\u53e3\uff0c\u65e8\u5728\u4f5c\u4e3a\u6807\u8bb0\u6027\u8d28\u4f7f\u7528\uff1b\u5176\u5177\u4f53\u529f\u80fd\u7531\u7ee7\u627f\u63a5\u53e3\u63d0\u4f9b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
                                                                              \n
                                                                            • BeanFactoryAware<\/code> \u2014\u2014 \u56de\u8c03\u83b7\u53d6 BeanFactory<\/code><\/li>\n\n\n\n
                                                                            • BeanClassLoaderAware<\/code> \u2014\u2014 \u56de\u8c03\u83b7\u53d6 ClassLoader<\/code><\/li>\n\n\n\n
                                                                            • BeanNameAware<\/code> \u2014\u2014 \u56de\u8c03\u83b7\u53d6 Bean \u540d\u79f0<\/li>\n\n\n\n
                                                                            • ApplicationContextAware<\/code> \u2014\u2014 \u56de\u8c03\u83b7\u53d6 ApplicationContext<\/code><\/li>\n<\/ul>\n\n\n\n
                                                                              \u5b9e\u73b0\u673a\u5236\u901a\u8fc7 instanceof<\/code> \u5224\u65ad\u548c\u56de\u8c03\u6267\u884c\uff0c\u4f7f\u5f97 Bean \u5728\u521d\u59cb\u5316\u9636\u6bb5\u80fd\u591f\u83b7\u5f97\u6240\u9700\u5bb9\u5668\u8d44\u6e90\u3002\uff08\u5728createBean()<\/code> \u2192 initializeBean()<\/code> \u8fd9\u6761\u94fe\u8def\u91cc\u5b8c\u6210\uff09<\/p>\n\n\n\n
                                                                              \"\"<\/div><\/figure>\n\n\n\n
                                                                              \u7279\u6b8a\u7684\uff0c\u5bf9\u4e8eApplicationContextAware<\/code>\uff1a<\/h3>\n\n\n\n
                                                                              \u8981\u5c06\u5176\u5305\u88c5\u4e3a\u4e00\u4e2aBeanPostProcessor \uff08\u5728refresh \u64cd\u4f5c\u65f6\uff0c\u6797\u5916\u8fd8\u8981\u63d0\u524d\u6ce8\u518c\uff09\u3002
                                                                              ApplicationContextAwareProcessor<\/code> \u662f\u4e00\u4e2a\u7279\u6b8a\u7684 BeanPostProcessor<\/code>\uff0c\u5b83\u53ea\u8d1f\u8d23\u611f\u77e5\u5e76\u6ce8\u5165 ApplicationContext<\/code>\u3002<\/p>\n\n\n\n
                                                                              \u5b83\u5fc5\u987b\u5728\u4efb\u4f55 Bean \u521b\u5efa\u524d<\/strong>\u5c31\u52a0\u5165\u5230 BeanFactory<\/code> \u7684\u540e\u5904\u7406\u94fe\u4e2d\uff0c\u8fd9\u6837\u540e\u9762\u521b\u5efa\u7684 Bean \u624d\u80fd\u5728\u521d\u59cb\u5316\u9636\u6bb5\u611f\u77e5 ApplicationContext<\/code>\u3002<\/p>\n\n\n\n
                                                                              \u5982\u679c\u5b83\u7b49\u5230 registerBeanPostProcessors(beanFactory)<\/code> \u90a3\u4e00\u6b65\uff08\u7b2c 5 \u6b65\uff09\u624d\u6ce8\u518c\uff0c\u5c31\u6709\u53ef\u80fd\u6f0f\u6389\u5728\u8fd9\u4e4b\u524d\u521b\u5efa\u7684 Bean<\/strong>\uff08\u4f8b\u5982\u67d0\u4e9b\u57fa\u7840\u8bbe\u65bd Bean \u53ef\u80fd\u63d0\u524d\u521b\u5efa\uff09\u3002<\/p>\n\n\n\n
                                                                              \u5176\u4ed6 Aware \u63a5\u53e3\u4e3a\u4ec0\u4e48\u4e0d\u7528\u63d0\u524d\u52a0<\/strong><\/p>\n\n\n\n
                                                                                \n
                                                                              • BeanNameAware<\/code>\u3001BeanFactoryAware<\/code>\u3001EnvironmentAware<\/code> \u7b49\uff0c\u90fd\u662f\u5728 AbstractAutowireCapableBeanFactory.initializeBean()<\/code> \u4e2d\u901a\u8fc7\u56de\u8c03\u76f4\u63a5\u5904\u7406\u7684\uff0c\u4e0d\u4f9d\u8d56\u989d\u5916\u7684 BeanPostProcessor<\/code>\u3002<\/li>\n\n\n\n
                                                                              • \u5b83\u4eec\u90fd\u662fBeanFactory \u5185\u7f6e\u903b\u8f91<\/strong>\u7684\u4e00\u90e8\u5206\uff0c\u800c ApplicationContextAware<\/code> \u7684\u611f\u77e5\u662f ApplicationContext<\/code> \u5c42\u624d\u63d0\u4f9b\u7684\u529f\u80fd\uff0c\u6240\u4ee5\u53ea\u80fd\u901a\u8fc7 ApplicationContextAwareProcessor<\/code> \u8fd9\u79cd\u6865\u63a5\u7c7b\u6765\u505a\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                                Spring \u611f\u77e5\u63a5\u53e3\u7684\u8bbe\u8ba1\u548c\u5b9e\u73b0\u7c7b\u5173\u7cfb\uff1a<\/h2>\n\n\n\n
                                                                                \"\"<\/div><\/figure>\n\n\n\n
                                                                                \u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
                                                                                1.\u5b9a\u4e49\u6807\u8bb0\u63a5\u53e3\uff1a<\/h3>\n\n\n\n
                                                                                \/**
                                                                                <\/em> * <\/em>\u6807\u8bb0\u8d85\u63a5\u53e3\uff0c\u8868\u660e\u67d0\u4e2a <\/em>Bean <\/em>\u6709\u8d44\u683c\u901a\u8fc7\u56de\u8c03\u65b9\u6cd5
                                                                                <\/em> <\/em>* <\/em>\u88ab <\/em>Spring <\/em>\u5bb9\u5668\u901a\u77e5\u7279\u5b9a\u7684\u6846\u67b6\u5bf9\u8c61\u3002
                                                                                <\/em> <\/em>* <\/em>\u5177\u4f53\u7684\u65b9\u6cd5\u7b7e\u540d\u7531\u5404\u4e2a\u5b50\u63a5\u53e3\u5b9a\u4e49\uff0c
                                                                                <\/em> <\/em>* <\/em>\u901a\u5e38\u662f\u4e00\u4e2a\u8fd4\u56de <\/em>void<\/em>\u3001\u63a5\u53d7\u5355\u4e2a\u53c2\u6570\u7684\u65b9\u6cd5\u3002
                                                                                <\/em> <\/em>*
                                                                                <\/em> * <\/em>\u6807\u8bb0\u63a5\u53e3\uff0c\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684 <\/em>Bean <\/em>\u53ef\u4ee5\u88ab <\/em>Spring <\/em>\u5bb9\u5668\u611f\u77e5\u3002
                                                                                <\/em> <\/em>*\/
                                                                                <\/em>
                                                                                <\/em>public interface Aware {
                                                                                }<\/code><\/pre>\n\n\n\n
                                                                                \u901a\u5e38\u548c instanceof \u4e00\u8d77\u642d\u914d\u4f7f\u7528\u3002<\/p>\n\n\n\n
                                                                                2.\u5bb9\u5668\u611f\u77e5\u7c7b<\/h3>\n\n\n\n
                                                                                2.1 BeanFactoryAware<\/h3>\n\n\n\n
                                                                                \/**
                                                                                <\/em> * <\/em>\u4f7f <\/em>Bean <\/em>\u80fd\u611f\u77e5\u6240\u5c5e\u7684 <\/em>BeanFactory <\/em>\u5bb9\u5668\u3002
                                                                                <\/em> <\/em>* <\/em>\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684 <\/em>Bean<\/em>\uff0c\u5728\u521d\u59cb\u5316\u65f6\u4f1a\u88ab\u6ce8\u5165\u5f53\u524d <\/em>BeanFactory<\/em>\u3002
                                                                                <\/em> <\/em>*\/
                                                                                <\/em>public interface BeanFactoryAware extends Aware {
                                                                                    void setBeanFactory(BeanFactory beanFactory) throws BeansException;
                                                                                }<\/code><\/pre>\n\n\n\n
                                                                                2.2 BeanClassLoaderAware\uff1a<\/h3>\n\n\n\n
                                                                                \/**\n * \u4f7f Bean \u80fd\u611f\u77e5\u7528\u4e8e\u52a0\u8f7d Bean \u7c7b\u7684 ClassLoader\u3002\n * \u5b9e\u73b0\u8be5\u63a5\u53e3\u7684 Bean \u5728\u521d\u59cb\u5316\u65f6\u4f1a\u88ab\u6ce8\u5165 ClassLoader\u3002\n *\/\npublic interface BeanClassLoaderAware extends Aware {\n\n    void setBeanClassLoader(ClassLoader classLoader);\n\n}<\/code><\/pre>\n\n\n\n
                                                                                2.3 BeanNameAware\uff1a<\/h3>\n\n\n\n
                                                                                \/**\n * \u4f7f Bean \u80fd\u611f\u77e5\u5176\u5728\u5bb9\u5668\u4e2d\u7684\u540d\u79f0\u3002\n * \u5b9e\u73b0\u8be5\u63a5\u53e3\u7684 Bean \u5728\u521d\u59cb\u5316\u65f6\u4f1a\u88ab\u6ce8\u5165 Bean \u540d\u79f0\u3002\n *\/\n<\/em>public interface BeanNameAware extends Aware {\n    \n    void setBeanName(String name);\n\n}<\/code><\/pre>\n\n\n\n
                                                                                2.4 ApplicationContextAware<\/h3>\n\n\n\n
                                                                                \/**
                                                                                <\/em> * <\/em>\u4f7f <\/em>Bean <\/em>\u80fd\u611f\u77e5\u6240\u5c5e\u7684 <\/em>ApplicationContext<\/em>\u3002
                                                                                <\/em> <\/em>* <\/em>\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684 <\/em>Bean <\/em>\u5728\u521d\u59cb\u5316\u65f6\u4f1a\u88ab\u6ce8\u5165\u5f53\u524d <\/em>ApplicationContext<\/em>\u3002
                                                                                <\/em> <\/em>*\/
                                                                                <\/em>public interface ApplicationContextAware extends Aware {

                                                                                    void setApplicationContext(ApplicationContext applicationContext) throws BeansException;

                                                                                }<\/code><\/pre>\n\n\n\n

                                                                                3. \u5305\u88c5\u5904\u7406\u5668(ApplicationContextAwareProcessor)<\/h3>\n\n\n\n
                                                                                \/**\n * \u8d1f\u8d23\u5904\u7406\u5b9e\u73b0\u4e86 ApplicationContextAware \u63a5\u53e3\u7684 Bean\uff0c\n * \u5728 Bean \u521d\u59cb\u5316\u524d\u5c06\u5f53\u524d\u7684 ApplicationContext \u6ce8\u5165\u5230 Bean \u4e2d\u3002\n *\/\npublic class ApplicationContextAwareProcessor implements BeanPostProcessor {\n\n    private final ApplicationContext applicationContext;\n\n    public ApplicationContextAwareProcessor(ApplicationContext applicationContext) {\n        this.applicationContext = applicationContext;\n    }\n\n    \/**\n     * \u5728 Bean \u521d\u59cb\u5316\u524d\u8c03\u7528\uff0c\u5224\u65ad\u662f\u5426\u5b9e\u73b0\u4e86 ApplicationContextAware\uff0c\n     * \u82e5\u662f\u5219\u6ce8\u5165 ApplicationContext\u3002\n     *\/\n    @Override\n    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {\n        if (bean instanceof ApplicationContextAware) {\n            ((ApplicationContextAware) bean).setApplicationContext(applicationContext);\n        }\n        return bean;\n    }\n\n    \/**\n     * \u521d\u59cb\u5316\u540e\u5904\u7406\uff0c\u9ed8\u8ba4\u76f4\u63a5\u8fd4\u56de Bean \u4e0d\u505a\u4efb\u4f55\u5904\u7406\u3002\n     *\/\n    @Override\n    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {\n        return bean;\n    }\n}\n<\/code><\/pre>\n\n\n\n
                                                                                \u7531\u4e8e ApplicationContext \u7684\u83b7\u53d6\u5e76\u4e0d\u80fd\u76f4\u63a5\u5728\u521b\u5efa Bean \u65f6\u5019\u5c31\u53ef\u4ee5\u62ff\u5230\uff0c\u6240\u4ee5\u9700\u8981\u5728 refresh \u64cd\u4f5c\u65f6\uff0c\u628a ApplicationContext \u5199\u5165\u5230\u4e00\u4e2a\u5305\u88c5\u7684 BeanPostProcessor \u4e2d\u53bb\uff0c\u518d\u7531 AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization \u65b9\u6cd5\u8c03\u7528\u3002<\/p>\n\n\n\n
                                                                                4. \u6ce8\u518c BeanPostProcessor<\/h3>\n\n\n\n
                                                                                public abstract class AbstractApplicationContext extends DefaultResourceLoader implements ConfigurableApplicationContext {

                                                                                    @Override
                                                                                    public void refresh() throws BeansException {

                                                                                        \/\/ 1. \u521b\u5efa BeanFactory\uff0c\u5e76\u52a0\u8f7d BeanDefinition\uff08\u4ece\u914d\u7f6e\u6587\u4ef6\u6216\u6ce8\u89e3\u4e2d\u89e3\u6790\u51fa Bean \u5b9a\u4e49\uff09
                                                                                        refreshBeanFactory();

                                                                                        \/\/ 2. \u83b7\u53d6\u5f53\u524d\u4e0a\u4e0b\u6587\u4f7f\u7528\u7684 BeanFactory
                                                                                        ConfigurableListableBeanFactory beanFactory = getBeanFactory();

                                                                                        \/\/ 3. \u6dfb\u52a0 ApplicationContextAwareProcessor\uff0c\u8fd9\u662f\u4e00\u4e2a\u7279\u6b8a\u7684 BeanPostProcessor\uff0c
                                                                                        \/\/ \u7528\u4e8e\u5728 Bean \u521d\u59cb\u5316\u524d\u81ea\u52a8\u56de\u8c03\u5b9e\u73b0\u4e86 ApplicationContextAware \u63a5\u53e3\u7684 Bean \u7684 setApplicationContext \u65b9\u6cd5\uff0c
                                                                                        \/\/ \u4f7f\u8fd9\u4e9b Bean \u80fd\u591f\u611f\u77e5\u5e76\u6301\u6709\u5f53\u524d ApplicationContext \u5b9e\u4f8b\u3002
                                                                                        \/\/ \u8be5\u5904\u7406\u5668\u5fc5\u987b\u63d0\u524d\u6ce8\u518c\uff0c\u786e\u4fdd\u540e\u7eed\u521b\u5efa\u7684\u6240\u6709\u76f8\u5173 Bean \u90fd\u80fd\u6b63\u786e\u83b7\u5f97 ApplicationContext\u3002
                                                                                        beanFactory.addBeanPostProcessor(new ApplicationContextAwareProcessor(this));


                                                                                        \/\/ 4. \u6267\u884c\u6240\u6709 BeanFactoryPostProcessor\uff0c\u5141\u8bb8\u4fee\u6539 BeanDefinition
                                                                                        \/\/ \uff08\u6b64\u65f6\u8fd8\u672a\u5b9e\u4f8b\u5316\u4efb\u4f55 Bean\uff09
                                                                                        invokeBeanFactoryPostProcessors(beanFactory);

                                                                                        \/\/ 5. \u6ce8\u518c\u6240\u6709 BeanPostProcessor\uff0c\u4e3a\u540e\u7eed Bean \u5b9e\u4f8b\u5316\u8fc7\u7a0b\u6dfb\u52a0\u6269\u5c55\u903b\u8f91\uff08\u5982 AOP\u3001\u4f9d\u8d56\u6ce8\u5165\u7b49\uff09
                                                                                        registerBeanPostProcessors(beanFactory);

                                                                                        \/\/ 6. \u63d0\u524d\u5b9e\u4f8b\u5316\u6240\u6709\u975e\u61d2\u52a0\u8f7d\u7684\u5355\u4f8b Bean\uff08\u89e6\u53d1\u5b8c\u6574\u7684 Bean \u521b\u5efa\u6d41\u7a0b\uff09
                                                                                        beanFactory.preInstantiateSingletons();
                                                                                    }
                                                                                .......
                                                                                }<\/pre>\n\n\n\n
                                                                                5.\u611f\u77e5\u8c03\u7528\u64cd\u4f5c<\/h3>\n\n\n\n
                                                                                5.1AbstractBeanFactory \u65b0\u589e \u7528\u4e8e\u52a0\u8f7d Bean \u7c7b\u7684 ClassLoader<\/code> \u7684\u7ba1\u7406\uff1a <\/h3>\n\n\n\n
                                                                                public abstract class AbstractBeanFactory extends DefaultSingletonBeanRegistry implements ConfigurableBeanFactory {\n\n    \/**\n     * \u7528\u4e8e\u52a0\u8f7d Bean \u7c7b\u540d\u65f6\u6240\u4f7f\u7528\u7684 ClassLoader\uff08\u5982\u679c\u9700\u8981\u7684\u8bdd\uff09\n     *\/\n    private ClassLoader beanClassLoader = ClassUtils.getDefaultClassLoader();\n\n    \/\/...\n\n    public ClassLoader getBeanClassLoader() {\n        return this.beanClassLoader;\n    }\n}<\/code><\/pre>\n\n\n\n
                                                                                5.2 \u5b9e\u73b0\u611f\u77e5\u8c03\u7528\uff1a<\/h3>\n\n\n\n
                                                                                AbstractAutowireCapableBeanFactory\u4e2d\uff1a<\/pre>\n\n\n\n
                                                                                \/**\n     * \u521d\u59cb\u5316 Bean \u7684\u8fc7\u7a0b\uff1a\n     * 1. \u8c03\u7528\u5b9e\u73b0\u4e86 Aware \u63a5\u53e3\u7684\u56de\u8c03\u65b9\u6cd5\uff0c\u6ce8\u5165\u76f8\u5e94\u7684\u5bb9\u5668\u8d44\u6e90\u3002\n     * 2. \u6267\u884c\u6240\u6709 BeanPostProcessor \u7684 postProcessBeforeInitialization \u65b9\u6cd5\u3002\n     * 3. \u8c03\u7528 Bean \u81ea\u5b9a\u4e49\u7684\u521d\u59cb\u5316\u65b9\u6cd5\uff08\u5982 afterPropertiesSet \u6216\u914d\u7f6e\u7684 init-method\uff09\u3002\n     * 4. \u6267\u884c\u6240\u6709 BeanPostProcessor \u7684 postProcessAfterInitialization \u65b9\u6cd5\u3002\n     *\/\n    private Object initializeBean(String beanName, Object bean, BeanDefinition beanDefinition) {\n\n        \/\/ \u8c03\u7528 Aware \u63a5\u53e3\u7684\u56de\u8c03\u65b9\u6cd5\uff0c\u6ce8\u5165\u5bb9\u5668\u8d44\u6e90\uff08\u5177\u4f53\u5b9e\u73b0\u7531Bean\u81ea\u5df1\u5b9e\u73b0\uff09\n        if (bean instanceof Aware) {\n            if (bean instanceof BeanFactoryAware) {\n                ((BeanFactoryAware) bean).setBeanFactory(this);\n            }\n            if (bean instanceof BeanClassLoaderAware) {\n                ((BeanClassLoaderAware) bean).setBeanClassLoader(getBeanClassLoader());\n            }\n            if (bean instanceof BeanNameAware) {\n                ((BeanNameAware) bean).setBeanName(beanName);\n            }\n        }\n\n        \/\/ \u6267\u884c BeanPostProcessor \u7684\u521d\u59cb\u5316\u524d\u7f6e\u5904\u7406\n        Object wrappedBean = applyBeanPostProcessorsBeforeInitialization(bean, beanName);\n\n        \/\/ \u8c03\u7528 Bean \u7684\u521d\u59cb\u5316\u65b9\u6cd5\uff08afterPropertiesSet\u3001init-method\uff09\n        try {\n            invokeInitMethods(beanName, wrappedBean, beanDefinition);\n        } catch (Exception e) {\n            throw new BeansException(\"Invocation of init method of bean[\" + beanName + \"] failed\", e);\n        }\n\n        \/\/ \u6267\u884c BeanPostProcessor \u7684\u521d\u59cb\u5316\u540e\u7f6e\u5904\u7406\n        wrappedBean = applyBeanPostProcessorsAfterInitialization(wrappedBean, beanName);\n\n        return wrappedBean;\n    }<\/code><\/pre>\n\n\n\n
                                                                                \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
                                                                                \u51c6\u5907\uff1a<\/h3>\n\n\n\n
                                                                                UserService\u65b0\u589e\uff1a<\/p>\n\n\n\n
                                                                                public class UserService implements BeanNameAware, BeanClassLoaderAware, ApplicationContextAware, BeanFactoryAware {\n\n    private ApplicationContext applicationContext;\n    private BeanFactory beanFactory;\n\n    @Override\n    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {\n        this.beanFactory = beanFactory;\n    }\n\n    @Override\n    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {\n        this.applicationContext = applicationContext;\n    }\n\n    @Override\n    public void setBeanName(String name) {\n        System.out<\/em>.println(\"Bean Name is\uff1a\" + name);\n    }\n\n    @Override\n    public void setBeanClassLoader(ClassLoader classLoader) {\n        System.out<\/em>.println(\"ClassLoader\uff1a\" + classLoader);\n    }\n\n    public ApplicationContext getApplicationContext() {\n        return applicationContext;\n    }\n\n    public BeanFactory getBeanFactory() {\n        return beanFactory;\n    }<\/code><\/pre>\n\n\n\n
                                                                                \u5176\u4ed6\u90fd\u548c\u4e0a\u8282\u4e00\u6837\u3002<\/p>\n\n\n\n
                                                                                \u5355\u5143\u6d4b\u8bd5\uff1a<\/h3>\n\n\n\n
                                                                                @Test
                                                                                public void test_xml() {
                                                                                    \/\/ 1.\u521d\u59cb\u5316 BeanFactory
                                                                                    ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(\"classpath:spring.xml\");
                                                                                    applicationContext.registerShutdownHook();

                                                                                    \/\/ 2. \u83b7\u53d6Bean\u5bf9\u8c61\u8c03\u7528\u65b9\u6cd5
                                                                                    UserService userService = applicationContext.getBean(\"userService\", UserService.class);
                                                                                    String result = userService.queryUserInfo();
                                                                                    System.out<\/em>.println(\"\u6d4b\u8bd5\u7ed3\u679c\uff1a\" + result);
                                                                                    System.out<\/em>.println(\"ApplicationContextAware\uff1a\"+userService.getApplicationContext());
                                                                                    System.out<\/em>.println(\"BeanFactoryAware\uff1a\"+userService.getBeanFactory());
                                                                                }<\/code><\/pre>\n\n\n\n
                                                                                \u7ed3\u679c\uff1a<\/p>\n\n\n\n
                                                                                \u6267\u884c\uff1aDao\u7684 init-method\nClassLoader\uff1ajdk.internal.loader.ClassLoaders$AppClassLoader@71bc1ae4\nBean Name is\uff1auserService\n\u6d4b\u8bd5\u7ed3\u679c\uff1aCMD137,\u817e\u8baf,\u6df1\u5733\nApplicationContextAware\uff1acom.miniSpring.context.support.ClassPathXmlApplicationContext@58cbafc2\nBeanFactoryAware\uff1acom.miniSpring.beans.factory.support.DefaultListableBeanFactory@2034b64c\n\u6267\u884c\uff1aDao\u7684 destroy-method\n\nProcess finished with exit code 0<\/code><\/pre>\n\n\n\n
                                                                                Step 9\uff1a\u5173\u4e8eBean\u5bf9\u8c61\u4f5c\u7528\u57df\u4ee5\u53caFactoryBean\u7684\u5b9e\u73b0\u548c\u4f7f\u7528<\/h1>\n\n\n\n
                                                                                \u5728Spring\u6846\u67b6\u4e2d\uff0cBean\u5bf9\u8c61\u7684\u4f5c\u7528\u57df\uff08Scope\uff09\u51b3\u5b9a\u4e86Bean\u5b9e\u4f8b\u7684\u751f\u547d\u5468\u671f\u53ca\u5176\u5728\u5bb9\u5668\u4e2d\u7684\u7ba1\u7406\u65b9\u5f0f\u3002\u6b63\u786e\u7406\u89e3Bean\u7684\u4f5c\u7528\u57df\uff0c\u662f\u5408\u7406\u8bbe\u8ba1\u5e94\u7528\u67b6\u6784\u3001\u63a7\u5236\u8d44\u6e90\u5360\u7528\u548c\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u7684\u57fa\u7840\u3002<\/p>\n\n\n\n
                                                                                \u6b64\u5916\uff0cSpring\u4e2d\u63d0\u4f9b\u4e86\u7279\u6b8a\u63a5\u53e3FactoryBean<\/code>\uff0c\u901a\u8fc7\u5b9e\u73b0\u6b64\u63a5\u53e3\uff0c\u53ef\u4ee5\u81ea\u5b9a\u4e49\u590d\u6742\u5bf9\u8c61\u7684\u5b9e\u4f8b\u5316\u903b\u8f91\uff0c\u7b80\u5316Bean\u7684\u914d\u7f6e\u4e0e\u7ba1\u7406\uff0c\u63d0\u5347\u7cfb\u7edf\u6269\u5c55\u6027\u4e0e\u7075\u6d3b\u6027\u3002\u6df1\u5165\u638c\u63e1FactoryBean<\/code>\u7684\u5b9e\u73b0\u539f\u7406\u53ca\u5e94\u7528\uff0c\u6709\u52a9\u4e8e\u5f00\u53d1\u66f4\u4e3a\u9ad8\u6548\u3001\u89e3\u8026\u7684\u7ec4\u4ef6\u3002<\/p>\n\n\n\n
                                                                                \u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n
                                                                                \u4e00\u3001Spring Bean\u7684\u4f5c\u7528\u57df\uff08Scope\uff09<\/h3>\n\n\n\n
                                                                                Spring\u5bb9\u5668\u652f\u6301\u591a\u79cdBean\u4f5c\u7528\u57df\uff0c\u51b3\u5b9aBean\u5b9e\u4f8b\u7684\u521b\u5efa\u6570\u91cf\u53ca\u5176\u751f\u547d\u5468\u671f\u7ba1\u7406\u3002\u4e3b\u8981\u4f5c\u7528\u57df\u5982\u4e0b\uff1a<\/p>\n\n\n\n
                                                                                \u4f5c\u7528\u57df\u540d\u79f0<\/th>\u8bf4\u660e<\/th>\u751f\u547d\u5468\u671f<\/th>\u5178\u578b\u5e94\u7528\u573a\u666f<\/th><\/tr><\/thead>
                                                                                singleton<\/td>\u5bb9\u5668\u4e2d\u4ec5\u521b\u5efa\u4e00\u4e2a\u5171\u4eab\u7684Bean\u5b9e\u4f8b\uff0c\u9ed8\u8ba4\u4f5c\u7528\u57df<\/td>\u5bb9\u5668\u751f\u547d\u5468\u671f<\/td>\u7edd\u5927\u591a\u6570\u573a\u666f\uff0c\u5c24\u5176\u65e0\u72b6\u6001\u670d\u52a1\u7ec4\u4ef6<\/td><\/tr>
                                                                                prototype<\/td>\u6bcf\u6b21\u8bf7\u6c42\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684Bean\u5b9e\u4f8b<\/td>\u8bf7\u6c42\u521b\u5efa\uff0c\u5bb9\u5668\u4e0d\u7ba1\u7406\u9500\u6bc1<\/td>\u6709\u72b6\u6001Bean\u6216\u591a\u5b9e\u4f8b\u7ec4\u4ef6<\/td><\/tr>
                                                                                request<\/td>\u6bcf\u4e00\u6b21HTTP\u8bf7\u6c42\u521b\u5efa\u4e00\u4e2aBean\uff0c\u4ec5\u5728web\u73af\u5883\u6709\u6548<\/td>HTTP\u8bf7\u6c42\u5468\u671f<\/td>Web\u5e94\u7528\u4e2d\u6bcf\u8bf7\u6c42\u72ec\u7acb\u5bf9\u8c61<\/td><\/tr>
                                                                                session<\/td>\u6bcf\u4e2aHTTP\u4f1a\u8bdd\u521b\u5efa\u4e00\u4e2aBean\u5b9e\u4f8b<\/td>\u4f1a\u8bdd\u751f\u547d\u5468\u671f<\/td>Web\u5e94\u7528\u4e2d\u7528\u6237\u4f1a\u8bdd\u7ea7\u522b\u72b6\u6001<\/td><\/tr>
                                                                                application<\/td>\u4e00\u4e2aServletContext\u5171\u4eab\u4e00\u4e2aBean\u5b9e\u4f8b<\/td>ServletContext\u751f\u547d\u5468\u671f<\/td>Web\u5e94\u7528\u5168\u5c40\u5171\u4eab\u7ec4\u4ef6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                                                                                \u4e8c\u3001FactoryBean\u63a5\u53e3\u8be6\u89e3<\/h3>\n\n\n\n
                                                                                FactoryBean<\/code>\u63a5\u53e3\u4e3aSpring\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u7684\u6269\u5c55\u673a\u5236\u3002\u5b9e\u73b0\u8be5\u63a5\u53e3\u53ef\u4ee5\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u5b9e\u4f8b\u5316\u903b\u8f91\uff0cSpring\u5bb9\u5668\u5c06\u901a\u8fc7FactoryBean<\/code>\u8fd4\u56de\u7684\u5bf9\u8c61\u4f5c\u4e3aBean\u5b9e\u4f8b\u3002<\/p>\n\n\n\n
                                                                                2.1 FactoryBean\u63a5\u53e3\u7ed3\u6784<\/h3>\n\n\n\n
                                                                                \u6838\u5fc3\u65b9\u6cd5\u5305\u62ec\uff1a<\/p>\n\n\n\n
                                                                                  \n
                                                                                • Object getObject()<\/code>\uff1a\u8fd4\u56de\u7531FactoryBean\u7ba1\u7406\u7684\u5bf9\u8c61\u5b9e\u4f8b\u3002<\/li>\n\n\n\n
                                                                                • Class<?> getObjectType()<\/code>\uff1a\u8fd4\u56de\u8be5\u5bf9\u8c61\u7684\u7c7b\u578b\u3002<\/li>\n\n\n\n
                                                                                • boolean isSingleton()<\/code>\uff1a\u6307\u793a\u8fd4\u56de\u7684\u5bf9\u8c61\u662f\u5426\u4e3a\u5355\u4f8b\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                                  2.2 FactoryBean\u7684\u4f5c\u7528\u4e0e\u4f18\u52bf<\/h3>\n\n\n\n
                                                                                    \n
                                                                                  • \u89e3\u8026\u5b9e\u4f8b\u5316\u8fc7\u7a0b<\/strong>\uff1a\u590d\u6742Bean\u7684\u521b\u5efa\u903b\u8f91\u5c01\u88c5\u5728FactoryBean\u4e2d\uff0c\u914d\u7f6e\u66f4\u52a0\u7b80\u6d01\u3002<\/li>\n\n\n\n
                                                                                  • \u652f\u6301\u52a8\u6001\u751f\u6210\u5bf9\u8c61<\/strong>\uff1a\u53ef\u6839\u636e\u8fd0\u884c\u65f6\u6761\u4ef6\u52a8\u6001\u8fd4\u56de\u4e0d\u540c\u5b9e\u4f8b\u3002<\/li>\n\n\n\n
                                                                                  • \u5bb9\u5668\u7ba1\u7406\u589e\u5f3a<\/strong>\uff1aSpring\u5bb9\u5668\u5bf9FactoryBean\u53ca\u5176\u4ea7\u7269\u5206\u522b\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n
                                                                                    \u6b64\u5904\u6709\u516b\u80a1\uff1a<\/p>\n\n\n\n
                                                                                    3.Bean Factory\u4e0eFactoryBean\u6709\u4ec0\u4e48\u533a\u522b\uff1f
                                                                                    <\/h3>\n\n\n\n
                                                                                    \u9996\u5148\u662f\u5b83\u4eec\u7684\u672c\u8d28\u89d2\u8272\u4e0d\u540c\u3002Bean Factory \u662f Spring IoC \u5bb9\u5668\u7684\u9876\u5c42\u63a5\u53e3\uff0c\u76f8\u5f53\u4e8e Spring \u5bb9\u5668\u7684\u6838\u5fc3\uff0c\u50cf\u6211\u4eec\u5e38\u7528\u7684 ApplicationContext \u5c31\u662f\u5b83\u7684\u5b9e\u73b0\u7c7b\u3002\u5b83\u4e3b\u8981\u8d1f\u8d23\u7ba1\u7406\u6240\u6709 Bean \u7684\u751f\u547d\u5468\u671f\uff0c\u5305\u62ec\u6ce8\u518c\u3001\u5b9e\u4f8b\u5316\u3001\u4f9d\u8d56\u6ce8\u5165\u8fd9\u4e9b\u57fa\u7840\u64cd\u4f5c\uff0c\u662f Spring \u5bb9\u5668\u7684\u57fa\u7840\u8bbe\u65bd\u3002<\/p>\n\n\n\n
                                                                                    \u800c FactoryBean \u672c\u8d28\u4e0a\u662f\u4e00\u4e2a “\u5de5\u5382 Bean”\uff0c\u5b83\u672c\u8eab\u662f Spring \u7ba1\u7406\u7684\u4e00\u4e2a Bean\uff0c\u4f46\u7279\u6b8a\u4e4b\u5904\u5728\u4e8e\u5b83\u80fd\u5e2e\u6211\u4eec\u521b\u5efa\u5176\u4ed6 Bean\u3002\u5f53\u67d0\u4e2a Bean \u7684\u521b\u5efa\u8fc7\u7a0b\u6bd4\u8f83\u590d\u6742\uff0c\u6bd4\u5982\u9700\u8981\u5f88\u591a\u914d\u7f6e\u6216\u8005\u4f9d\u8d56\u5916\u90e8\u8d44\u6e90\u65f6\uff0c\u5c31\u53ef\u4ee5\u7528 FactoryBean \u6765\u5c01\u88c5\u8fd9\u4e9b\u903b\u8f91\u3002<\/p>\n\n\n\n
                                                                                    \u5176\u6b21\u662f\u4f7f\u7528\u573a\u666f\u7684\u5dee\u5f02\u3002Bean Factory \u4f5c\u4e3a\u5bb9\u5668\u63a5\u53e3\uff0c\u66f4\u591a\u662f Spring \u5185\u90e8\u5728\u4f7f\u7528\uff0c\u6211\u4eec\u5f00\u53d1\u8005\u901a\u5e38\u901a\u8fc7 ApplicationContext \u6765\u95f4\u63a5\u4f7f\u7528\u5b83\u7684\u529f\u80fd\uff0c\u6bd4\u5982\u8c03\u7528 getBean () \u65b9\u6cd5\u83b7\u53d6 Bean\u3002<\/p>\n\n\n\n
                                                                                    FactoryBean \u5219\u662f\u7ed9\u5f00\u53d1\u8005\u7528\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u81ea\u5b9a\u4e49\u7c7b\u5b9e\u73b0\u8fd9\u4e2a\u63a5\u53e3\uff0c\u91cd\u5199 getObject () \u65b9\u6cd5\u6765\u5b9a\u4e49 Bean \u7684\u521b\u5efa\u903b\u8f91\u3002\u6bd4\u5982 Spring \u6574\u5408 MyBatis \u65f6\u7528\u7684 SqlSessionFactoryBean\uff0c\u5c31\u662f\u901a\u8fc7\u5b83\u6765\u521b\u5efa SqlSessionFactory\uff0c\u7b80\u5316\u4e86\u590d\u6742\u7684\u914d\u7f6e\u8fc7\u7a0b\u3002<\/p>\n\n\n\n
                                                                                    \u6700\u540e\u662f\u83b7\u53d6\u65b9\u5f0f\u7684\u4e0d\u540c\u3002\u83b7\u53d6\u666e\u901a Bean \u76f4\u63a5\u7528\u540d\u79f0\u5c31\u884c\uff0c\u4f46\u5982\u679c\u8981\u83b7\u53d6 FactoryBean \u672c\u8eab\uff0c\u9700\u8981\u5728\u540d\u79f0\u524d\u52a0\u4e2a & \u7b26\u53f7\uff0c\u8fd9\u4e5f\u662f\u4e2a\u5c0f\u7ec6\u8282\u3002<\/p>\n\n\n\n
                                                                                    \u7b80\u5355\u8bf4\uff0cBean Factory \u662f\u7ba1\u7406\u6240\u6709 Bean \u7684\u5927\u5de5\u5382\uff0c\u800c FactoryBean \u662f\u521b\u5efa\u7279\u5b9a Bean \u7684\u5c0f\u5de5\u5382\uff0c\u4e24\u8005\u804c\u8d23\u548c\u5e94\u7528\u573a\u666f\u5b8c\u5168\u4e0d\u540c\u3002<\/p>\n\n\n\n
                                                                                    Spring \u5355\u4f8b\u3001\u539f\u578b\u4ee5\u53ca FactoryBean<\/code> \u529f\u80fd\u5b9e\u73b0\u7c7b\u5173\u7cfb\uff1a<\/h2>\n\n\n\n
                                                                                    \"\"<\/div><\/figure>\n\n\n\n
                                                                                    \u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
                                                                                    1.Bean\u7684\u4f5c\u7528\u8303\u56f4\u5b9a\u4e49\u548cxml\u89e3\u6790\uff1a<\/h3>\n\n\n\n
                                                                                    public class BeanDefinition {\n\n    String SCOPE_SINGLETON = ConfigurableBeanFactory.SCOPE_SINGLETON;\n\n    String SCOPE_PROTOTYPE = ConfigurableBeanFactory.SCOPE_PROTOTYPE;\n\n    private Class beanClass;\n\n    private PropertyValues propertyValues;\n\n    private String initMethodName;\n\n    private String destroyMethodName;\n\n    private String scope = SCOPE_SINGLETON;\n\n    private boolean singleton = true;\n\n    private boolean prototype = false;\n    \n    \/\/\u5728xml\u6ce8\u518cBean\u5b9a\u4e49\u65f6\uff0c\u901a\u8fc7scope\u5b57\u6bb5\u6765\u5224\u65ad\u662f\u5355\u4f8b\u8fd8\u662f\u539f\u578b\n    public void setScope(String scope) {\n        this.scope = scope;\n        this.singleton = SCOPE_SINGLETON.equals(scope);\n        this.prototype = SCOPE_PROTOTYPE.equals(scope);\n    }\n    \n    public boolean isSingleton() {\n        return singleton;\n    }\n\n    public boolean isPrototype() {\n        return prototype;\n    }\n    \n    \/\/ ...get\/set\n}\n<\/code><\/pre>\n\n\n\n
                                                                                    XmlBeanDefinitionReader\uff1a<\/strong><\/p>\n\n\n\n
                                                                                    protected void doLoadBeanDefinitions(InputStream inputStream) throws ClassNotFoundException {\n      \n        for (int i = 0; i < childNodes.getLength(); i++) {\n            \/\/ \u5224\u65ad\u5143\u7d20\n            if (!(childNodes.item(i) instanceof Element)) continue;\n            \/\/ \u5224\u65ad\u5bf9\u8c61\n            if (!\"bean\".equals(childNodes.item(i).getNodeName())) continue;\n\n            \/\/ \u89e3\u6790\u6807\u7b7e\n            Element bean = (Element) childNodes.item(i);\n            String id = bean.getAttribute(\"id\");\n            String name = bean.getAttribute(\"name\");\n            String className = bean.getAttribute(\"class\");\n            String initMethod = bean.getAttribute(\"init-method\");\n            String destroyMethodName = bean.getAttribute(\"destroy-method\");\n            String beanScope = bean.getAttribute(\"scope\");\n\n            \/\/ \u83b7\u53d6 Class\uff0c\u65b9\u4fbf\u83b7\u53d6\u7c7b\u4e2d\u7684\u540d\u79f0\n            Class<?> clazz = Class.forName(className);\n            \/\/ \u4f18\u5148\u7ea7 id > name\n            String beanName = StrUtil.isNotEmpty(id) ? id : name;\n            if (StrUtil.isEmpty(beanName)) {\n                beanName = StrUtil.lowerFirst(clazz.getSimpleName());\n            }\n\n            \/\/ \u5b9a\u4e49Bean\n            BeanDefinition beanDefinition = new BeanDefinition(clazz);\n            beanDefinition.setInitMethodName(initMethod);\n            beanDefinition.setDestroyMethodName(destroyMethodName);\n            \n            \/\/\u8bbe\u7f6eScope\u5b57\u6bb5\uff1a\n            if (StrUtil.isNotEmpty(beanScope)) {\n                beanDefinition.setScope(beanScope);\n            }\n            \n            \/\/ ...\n            \n            \/\/ \u6ce8\u518c BeanDefinition\n            getRegistry().registerBeanDefinition(beanName, beanDefinition);\n        }\n    }<\/code><\/pre>\n\n\n\n
                                                                                    2.\u521b\u5efa\u548c\u4fee\u6539\u5bf9\u8c61\u65f6\u5019\u5224\u65ad\u5355\u4f8b\u548c\u539f\u578b\u6a21\u5f0f<\/h3>\n\n\n\n
                                                                                    public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFactory implements AutowireCapableBeanFactory {\n\n    private InstantiationStrategy instantiationStrategy = new CglibSubclassingInstantiationStrategy();\n\n    @Override\n    protected Object createBean(String beanName, BeanDefinition beanDefinition, Object[] args) throws BeansException {\n        Object bean = null;\n        try {\n            bean = createBeanInstance(beanDefinition, beanName, args);\n            \/\/ \u7ed9 Bean \u586b\u5145\u5c5e\u6027\n            applyPropertyValues(beanName, bean, beanDefinition);\n            \/\/ \u6267\u884c Bean \u7684\u521d\u59cb\u5316\u65b9\u6cd5\u548c BeanPostProcessor \u7684\u524d\u7f6e\u548c\u540e\u7f6e\u5904\u7406\u65b9\u6cd5\n            bean = initializeBean(beanName, bean, beanDefinition);\n        } catch (Exception e) {\n            throw new BeansException(\"Instantiation of bean failed\", e);\n        }\n\n        \/\/ \u6ce8\u518c\u5b9e\u73b0\u4e86 DisposableBean \u63a5\u53e3\u7684 Bean \u5bf9\u8c61\n        registerDisposableBeanIfNecessary(beanName, bean, beanDefinition);\n\n        \/\/ \u5224\u65ad SCOPE_SINGLETON\u3001SCOPE_PROTOTYPE\n        if (beanDefinition.isSingleton()) {\n            addSingleton(beanName, bean);\n        }\n        return bean;\n    }\n\n    protected void registerDisposableBeanIfNecessary(String beanName, Object bean, BeanDefinition beanDefinition) {\n        \/\/ \u975e Singleton \u7c7b\u578b\u7684 Bean \u4e0d\u6267\u884c\u9500\u6bc1\u65b9\u6cd5\n        if (!beanDefinition.isSingleton()) return;\n\n        if (bean instanceof DisposableBean || StrUtil.isNotEmpty(beanDefinition.getDestroyMethodName())) {\n            registerDisposableBean(beanName, new DisposableBeanAdapter(bean, beanName, beanDefinition));\n        }\n    }\n    \n    \/\/ ... \u5176\u4ed6\u529f\u80fd\n}\n<\/code><\/pre>\n\n\n\n
                                                                                    \u5355\u4f8b\u6a21\u5f0f\u548c\u539f\u578b\u6a21\u5f0f\u7684\u533a\u522b\u5c31\u5728\u4e8e\u662f\u5426\u5b58\u653e\u5230\u5185\u5b58\u4e2d<\/strong>\uff0c\u5982\u679c\u662f\u539f\u578b\u6a21\u5f0f\u90a3\u4e48\u5c31\u4e0d\u4f1a\u5b58\u653e\u5230\u5185\u5b58\u4e2d\uff0c\u6bcf\u6b21\u83b7\u53d6\u90fd\u91cd\u65b0\u521b\u5efa\u5bf9\u8c61\uff0c\u53e6\u5916\u975e Singleton \u7c7b\u578b\u7684 Bean \u4e0d\u9700\u8981\u6267\u884c\u9500\u6bc1\u65b9\u6cd5\u3002<\/p>\n\n\n\n
                                                                                    3.\u5b9a\u4e49 FactoryBean \u63a5\u53e3\uff1a<\/h3>\n\n\n\n
                                                                                    \/**\n * FactoryBean \u662f Spring \u63d0\u4f9b\u7684\u4e00\u79cd\u7279\u6b8a Bean \u63a5\u53e3\uff0c\n * \u7528\u4e8e\u81ea\u5b9a\u4e49\u590d\u6742\u5bf9\u8c61\u7684\u521b\u5efa\u903b\u8f91\u3002\n *\n * \u5b83\u7684\u4f5c\u7528\u662f\uff1a\u5f53\u4e00\u4e2a Bean \u5b9e\u73b0\u4e86 FactoryBean \u63a5\u53e3\uff0c\n * Spring \u5bb9\u5668\u5728\u83b7\u53d6\u8be5 Bean \u65f6\uff0c\u8fd4\u56de\u7684\u662f getObject() \u65b9\u6cd5\n * \u751f\u4ea7\u7684\u5bf9\u8c61\uff08\u79f0\u4e3a\u201c\u4ea7\u7269\u5bf9\u8c61\u201d\uff09\uff0c\u800c\u4e0d\u662f FactoryBean \u672c\u8eab\u3002\n * \u5982\u679c\u9700\u8981\u83b7\u53d6\u5de5\u5382\u5bf9\u8c61\u672c\u8eab\uff0c\u53ef\u4ee5\u5728 getBean \u65f6\u5728\u540d\u79f0\u524d\u52a0 \"&\" \u524d\u7f00\u3002\n *\/\npublic interface FactoryBean<T> {\n\n    T getObject() throws Exception;\n\n    Class<?> getObjectType();\n\n    boolean isSingleton();\n\n}<\/code><\/pre>\n\n\n\n
                                                                                    4.\u5b9e\u73b0\u4e00\u4e2a FactoryBean \u6ce8\u518c\u670d\u52a1\uff1a<\/h3>\n\n\n\n
                                                                                    \/**\n * FactoryBeanRegistrySupport\n *\n * \u8be5\u7c7b\u662f Spring \u5bb9\u5668\u4e2d\u7528\u4e8e\u652f\u6301 FactoryBean \u4ea7\u7269\u5bf9\u8c61\uff08getObject() \u8fd4\u56de\u503c\uff09\u7f13\u5b58\u548c\u83b7\u53d6\u7684\u62bd\u8c61\u57fa\u7c7b\uff0c\n * \u7ee7\u627f\u81ea DefaultSingletonBeanRegistry\uff0c\u56e0\u6b64\u5177\u5907\u5355\u4f8b\u5bf9\u8c61\u6ce8\u518c\u4e0e\u7f13\u5b58\u7684\u80fd\u529b\u3002\n *\n * \u6838\u5fc3\u804c\u8d23\uff1a\n * 1. \u7f13\u5b58\u7531 FactoryBean \u521b\u5efa\u7684\u5355\u4f8b\u4ea7\u7269\u5bf9\u8c61\uff08\u4e0e\u5de5\u5382\u5bf9\u8c61\u672c\u8eab\u5206\u5f00\u7ba1\u7406\uff09\n * 2. \u6839\u636e FactoryBean \u7684 singleton\/prototype \u7279\u6027\uff0c\u51b3\u5b9a\u662f\u5426\u4f7f\u7528\u7f13\u5b58\n * 3. \u7edf\u4e00\u5904\u7406 FactoryBean \u4ea7\u7269\u5bf9\u8c61\u7684\u521b\u5efa\u5f02\u5e38\n *\n * \u8bbe\u8ba1\u80cc\u666f\uff1a\n * - \u5728 Spring \u4e2d\uff0cFactoryBean \u672c\u8eab\u4e5f\u662f\u4e00\u4e2a Bean\uff0c\u4f46\u6211\u4eec\u66f4\u591a\u5173\u5fc3\u5b83\u4ea7\u51fa\u7684\u5bf9\u8c61\uff08getObject()\uff09\u3002\n * - \u5982\u679c FactoryBean \u7684\u4ea7\u7269\u662f\u5355\u4f8b\uff0c\u9700\u8981\u5728\u5bb9\u5668\u4e2d\u7f13\u5b58\uff1b\u5982\u679c\u662f\u539f\u578b\uff0c\u6bcf\u6b21\u90fd\u91cd\u65b0\u8c03\u7528 getObject()\u3002\n * - \u6b64\u7c7b\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4e13\u95e8\u7684\u7f13\u5b58 Map\uff08factoryBeanObjectCache\uff09\u6765\u7ba1\u7406\u8fd9\u4e9b\u4ea7\u7269\u5bf9\u8c61\uff0c\u907f\u514d\u4e0e\u666e\u901a Bean \u7f13\u5b58\u6df7\u6dc6\u3002\n *\/\npublic abstract class FactoryBeanRegistrySupport extends DefaultSingletonBeanRegistry {\n\n    \/**\n     * FactoryBean \u4ea7\u7269\u5bf9\u8c61\u7684\u5355\u4f8b\u7f13\u5b58\uff1a\n     * key   = FactoryBean \u7684 beanName\n     * value = FactoryBean \u521b\u5efa\u7684\u5bf9\u8c61\u5b9e\u4f8b\uff08getObject() \u7684\u8fd4\u56de\u503c\uff09\n     *\n     * \u6ce8\u610f\uff1a\n     * - \u8fd9\u91cc\u7f13\u5b58\u7684\u662f\u4ea7\u7269\u5bf9\u8c61\uff0c\u800c\u4e0d\u662f FactoryBean \u672c\u8eab\n     * - \u5982\u679c getObject() \u8fd4\u56de null\uff0c\u4f1a\u4f7f\u7528 NULL_OBJECT \u5360\u4f4d\u7b26\u907f\u514d\u91cd\u590d\u8c03\u7528\n     *\/\n    private final Map<String, Object> factoryBeanObjectCache = new ConcurrentHashMap<>();\n\n    \/**\n     * \u4ece FactoryBean \u4ea7\u7269\u7f13\u5b58\u4e2d\u83b7\u53d6\u5bf9\u8c61\uff08\u4e0d\u89e6\u53d1\u521b\u5efa\uff09\u3002\n     *\/\n    protected Object getCachedObjectForFactoryBean(String beanName) {\n        Object object = this.factoryBeanObjectCache.get(beanName);\n        return (object != NULL_OBJECT ? object : null);\n    }\n\n    \/**\n     * \u6839\u636e FactoryBean \u83b7\u53d6\u5bf9\u8c61\uff0c\u5e26\u6709\u7f13\u5b58\u903b\u8f91\u3002\n     * - \u5982\u679c FactoryBean \u662f\u5355\u4f8b\uff1a\n     *   1. \u5148\u4ece\u7f13\u5b58\u83b7\u53d6\n     *   2. \u7f13\u5b58\u6ca1\u6709\u5219\u8c03\u7528 doGetObjectFromFactoryBean \u521b\u5efa\uff0c\u5e76\u653e\u5165\u7f13\u5b58\n     * - \u5982\u679c\u662f\u539f\u578b\uff1a\n     *   \u6bcf\u6b21\u90fd\u8c03\u7528 doGetObjectFromFactoryBean \u521b\u5efa\u65b0\u5bf9\u8c61\uff0c\u4e0d\u7f13\u5b58\n     *\/\n    protected Object getObjectFromFactoryBean(FactoryBean factory, String beanName) {\n        if (factory.isSingleton()) {\n            Object object = this.factoryBeanObjectCache.get(beanName);\n            if (object == null) {\n                object = doGetObjectFromFactoryBean(factory, beanName);\n                this.factoryBeanObjectCache.put(beanName, (object != null ? object : NULL_OBJECT));\n            }\n            return (object != NULL_OBJECT ? object : null);\n        } else {\n            return doGetObjectFromFactoryBean(factory, beanName);\n        }\n    }\n\n    \/**\n     * \u771f\u6b63\u8c03\u7528 FactoryBean.getObject() \u521b\u5efa\u4ea7\u7269\u5bf9\u8c61\u7684\u65b9\u6cd5\u3002\n     * \u5bf9\u5f02\u5e38\u8fdb\u884c\u7edf\u4e00\u5c01\u88c5\u4e3a BeansException\u3002\n     *\/\n    private Object doGetObjectFromFactoryBean(final FactoryBean factory, final String beanName) {\n        try {\n            return factory.getObject();\n        } catch (Exception e) {\n            throw new BeansException(\"FactoryBean threw exception on object[\" + beanName + \"] creation\", e);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                                                                                    5.\u6269\u5c55 AbstractBeanFactory \u521b\u5efa\u5bf9\u8c61\u903b\u8f91\uff1a<\/h3>\n\n\n\n
                                                                                      \n
                                                                                    • \u9996\u5148\u8fd9\u91cc\u628a AbstractBeanFactory \u539f\u6765\u7ee7\u627f\u7684 DefaultSingletonBeanRegistry\uff0c\u4fee\u6539\u4e3a\u7ee7\u627f FactoryBeanRegistrySupport\u3002\u56e0\u4e3a\u9700\u8981\u6269\u5c55\u51fa\u521b\u5efa FactoryBean \u5bf9\u8c61\u7684\u80fd\u529b\uff0c\u6240\u4ee5\u8fd9\u5c31\u60f3\u4e00\u4e2a\u94fe\u6761\u670d\u52a1\u4e0a\uff0c\u622a\u51fa\u4e00\u4e2a\u6bb5\u6765\u5904\u7406\u989d\u5916\u7684\u670d\u52a1\uff0c\u5e76\u628a\u94fe\u6761\u518d\u94fe\u63a5\u4e0a\u3002<\/li>\n\n\n\n
                                                                                    • \u6b64\u5904\u65b0\u589e\u52a0\u7684\u529f\u80fd\u4e3b\u8981\u662f\u5728 doGetBean \u65b9\u6cd5\u4e2d\uff0c\u6dfb\u52a0\u4e86\u8c03\u7528 (T) getObjectForBeanInstance(sharedInstance, name)<\/code> \u5bf9\u83b7\u53d6 FactoryBean \u7684\u64cd\u4f5c\u3002<\/li>\n\n\n\n
                                                                                    • \u5728 getObjectForBeanInstance \u65b9\u6cd5\u4e2d\u505a\u5177\u4f53\u7684 instanceof \u5224\u65ad\uff0c\u53e6\u5916\u8fd8\u4f1a\u4ece FactoryBean \u7684\u7f13\u5b58\u4e2d\u83b7\u53d6\u5bf9\u8c61\uff0c\u5982\u679c\u4e0d\u5b58\u5728\u5219\u8c03\u7528 FactoryBeanRegistrySupport#getObjectFromFactoryBean\uff0c\u6267\u884c\u5177\u4f53\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                                      protected <T> T doGetBean(final String name, final Object[] args) {
                                                                                          Object sharedInstance = getSingleton(name);
                                                                                          if (sharedInstance != null) {
                                                                                              \/\/ \u5982\u679c\u662f FactoryBean\uff0c\u5219\u9700\u8981\u8c03\u7528 FactoryBean#getObject
                                                                                              return (T) getObjectForBeanInstance(sharedInstance, name);
                                                                                          }

                                                                                          BeanDefinition beanDefinition = getBeanDefinition(name);
                                                                                          Object bean = createBean(name, beanDefinition, args);
                                                                                          return (T) getObjectForBeanInstance(bean, name);
                                                                                      }

                                                                                      private Object getObjectForBeanInstance(Object beanInstance, String beanName) {

                                                                                          \/\/ \u666e\u901a Bean\uff0c\u76f4\u63a5\u8fd4\u56de
                                                                                          if (!(beanInstance instanceof FactoryBean)) {
                                                                                              return beanInstance;
                                                                                          }

                                                                                          \/\/ FactoryBean \u4ea7\u7269\u7f13\u5b58\u4e2d\u83b7\u53d6\u5df2\u6709\u5bf9\u8c61
                                                                                          Object object = getCachedObjectForFactoryBean(beanName);

                                                                                          \/\/ \u7f13\u5b58\u4e2d\u6ca1\u6709\uff0c\u5219\u8c03\u7528 FactoryBean \u521b\u5efa\u4ea7\u7269
                                                                                          if (object == null) {
                                                                                              FactoryBean<?> factoryBean = (FactoryBean<?>) beanInstance;
                                                                                              object = getObjectFromFactoryBean(factoryBean, beanName);
                                                                                          }

                                                                                          return object;
                                                                                      }<\/code><\/pre>\n\n\n\n
                                                                                      \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
                                                                                      \u51c6\u5907\uff1a<\/h3>\n\n\n\n
                                                                                      IUserDao<\/strong>\uff1a<\/h3>\n\n\n\n
                                                                                      \u8fd9\u4e2a\u7ae0\u8282\u6211\u4eec\u5220\u6389 UserDao\uff0c\u5b9a\u4e49\u4e00\u4e2a IUserDao \u63a5\u53e3\uff0c\u4e4b\u6240\u8fd9\u6837\u505a\u662f\u4e3a\u4e86\u901a\u8fc7 FactoryBean \u505a\u4e00\u4e2a\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u4ee3\u7406\u64cd\u4f5c\u3002<\/p>\n\n\n\n
                                                                                      public interface IUserDao {\n\n    String queryUserName(String uId);\n\n}\n<\/code><\/pre>\n\n\n\n
                                                                                      \u5b9a\u4e49 FactoryBean \u5bf9\u8c61:<\/h3>\n\n\n\n
                                                                                      \/**\n * ProxyBeanFactory \u5b9e\u73b0\u4e86 FactoryBean \u63a5\u53e3\uff0c\u7528\u4e8e\u521b\u5efa IUserDao \u63a5\u53e3\u7684\u52a8\u6001\u4ee3\u7406\u5b9e\u4f8b\u3002\n * \n * \u901a\u8fc7\u52a8\u6001\u4ee3\u7406\u673a\u5236\uff0c\u4ee3\u7406 IUserDao \u63a5\u53e3\u7684\u8c03\u7528\uff0c\u62e6\u622a\u65b9\u6cd5\u8c03\u7528\u5e76\u8fd4\u56de\u81ea\u5b9a\u4e49\u903b\u8f91\u7ed3\u679c\u3002\n * \n * \u8be5\u5de5\u5382\u7c7b\u6f14\u793a\u4e86\u5982\u4f55\u5229\u7528 JDK \u52a8\u6001\u4ee3\u7406\u7ed3\u5408 FactoryBean \u6765\u751f\u6210\u63a5\u53e3\u7684\u4ee3\u7406\u5bf9\u8c61\uff0c\n * \u5b9e\u73b0\u4e86\u63a5\u53e3\u65b9\u6cd5\u7684\u589e\u5f3a\u548c\u884c\u4e3a\u5b9a\u5236\u3002\n *\/\npublic class ProxyBeanFactory implements FactoryBean<IUserDao> {\n\n    \/**\n     * \u901a\u8fc7 JDK \u52a8\u6001\u4ee3\u7406\u521b\u5efa IUserDao \u63a5\u53e3\u7684\u4ee3\u7406\u5b9e\u4f8b\u3002\n     * \u4ee3\u7406\u5bf9\u8c61\u62e6\u622a\u6240\u6709\u65b9\u6cd5\u8c03\u7528\uff0c\u5229\u7528 InvocationHandler \u5b9e\u73b0\u65b9\u6cd5\u589e\u5f3a\uff1a\n     * - \u6839\u636e\u65b9\u6cd5\u5165\u53c2\uff0c\u4ece\u6a21\u62df\u7684 Map \u4e2d\u67e5\u8be2\u5bf9\u5e94\u7684\u7528\u6237\u540d\u3002\n     * - \u62fc\u63a5\u8fd4\u56de\u5b57\u7b26\u4e32\uff0c\u793a\u610f\u8be5\u65b9\u6cd5\u88ab\u4ee3\u7406\u62e6\u622a\u3002\n     *\n     * \u5173\u952e\u70b9\u8bf4\u660e\uff1a\n     * - Proxy.newProxyInstance \u521b\u5efa\u52a8\u6001\u4ee3\u7406\u5bf9\u8c61\u3002\n     * - \u7b2c\u4e00\u4e2a\u53c2\u6570\u4e3a\u7c7b\u52a0\u8f7d\u5668\uff0c\u901a\u5e38\u4f7f\u7528\u5f53\u524d\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u7c7b\u52a0\u8f7d\u5668\u3002\n     * - \u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u4ee3\u7406\u63a5\u53e3\u5217\u8868\uff0c\u8fd9\u91cc\u4ee3\u7406 IUserDao\u3002\n     * - \u7b2c\u4e09\u4e2a\u53c2\u6570\u662f InvocationHandler\uff0c\u5b9e\u73b0\u65b9\u6cd5\u8c03\u7528\u7684\u62e6\u622a\u903b\u8f91\u3002\n     *\n     * @return IUserDao \u63a5\u53e3\u7684\u4ee3\u7406\u5bf9\u8c61\n     * @throws Exception \u521b\u5efa\u4ee3\u7406\u5bf9\u8c61\u65f6\u53ef\u80fd\u629b\u51fa\u7684\u5f02\u5e38\n     *\/\n    @Override\n    public IUserDao getObject() throws Exception {\n        InvocationHandler handler = (proxy, method, args) -> {\n            \/\/ \u6a21\u62df\u6570\u636e\u5e93\u6216\u6570\u636e\u6e90\n            Map<String, String> hashMap = new HashMap<>();\n            hashMap.put(\"10001\", \"CMD137\");\n            hashMap.put(\"10002\", \"CMD138\");\n            hashMap.put(\"10003\", \"CMD139\");\n\n            \/\/ \u8fd4\u56de\u52a8\u6001\u4ee3\u7406\u7684\u7ed3\u679c\uff0c\u8bf4\u660e\u8c03\u7528\u4e86\u4ee3\u7406\u65b9\u6cd5\n            return \"\u4f60\u88ab\u4ee3\u7406\u4e86 \" + method.getName() + \"\uff1a\" + hashMap.get(args[0].toString());\n        };\n\n        \/\/ \u521b\u5efa\u5e76\u8fd4\u56de\u4ee3\u7406\u5b9e\u4f8b\uff0c\u5b9e\u73b0 IUserDao \u63a5\u53e3\n        return (IUserDao) Proxy.newProxyInstance(\n            Thread.currentThread().getContextClassLoader(),\n            new Class[]{IUserDao.class},\n            handler\n        );\n    }\n\n    \/**\n     * \u8fd4\u56de\u8be5 FactoryBean \u521b\u5efa\u5bf9\u8c61\u7684\u7c7b\u578b\uff0c\u5373 IUserDao \u63a5\u53e3\u7c7b\u578b\u3002\n     * \u5bb9\u5668\u636e\u6b64\u8fdb\u884c\u7c7b\u578b\u63a8\u65ad\u548c\u81ea\u52a8\u88c5\u914d\u3002\n     *\n     * @return IUserDao \u7684 Class \u5bf9\u8c61\n     *\/\n    @Override\n    public Class<?> getObjectType() {\n        return IUserDao.class;\n    }\n\n    \/**\n     * \u6307\u793a\u8be5 FactoryBean \u521b\u5efa\u7684\u5bf9\u8c61\u662f\u5426\u4e3a\u5355\u4f8b\u3002\n     * \u8fd4\u56de true\uff0c\u8868\u793a\u4ee3\u7406\u5bf9\u8c61\u5728\u5bb9\u5668\u4e2d\u662f\u5355\u4f8b\uff0c\u7f13\u5b58\u5171\u4eab\u3002\n     *\n     * @return true\uff0c\u5355\u4f8b\u5bf9\u8c61\n     *\/\n    @Override\n    public boolean isSingleton() {\n        return true;\n    }\n}<\/code><\/pre>\n\n\n\n
                                                                                      \u914d\u7f6e\u6587\u4ef6\uff1a<\/h3>\n\n\n\n
                                                                                      <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<beans>\n\n    <bean id=\"userService\" class=\"com.miniSpring.test.bean.UserService\" scope=\"prototype\">\n        <property name=\"uId\" value=\"10001\"\/>\n        <property name=\"company\" value=\"\u817e\u8baf\"\/>\n        <property name=\"location\" value=\"\u6df1\u5733\"\/>\n        <property name=\"userDao\" ref=\"proxyUserDao\"\/>\n    <\/bean>\n\n    <bean id=\"proxyUserDao\" class=\"com.miniSpring.test.bean.ProxyBeanFactory\"\/>\n\n<\/beans><\/code><\/pre>\n\n\n\n
                                                                                      \u5355\u5143\u6d4b\u8bd5(\u5355\u4f8b&\u539f\u578b)\uff1a<\/h3>\n\n\n\n
                                                                                      @Test\n    public void test_prototype() {\n        \/\/ 1.\u521d\u59cb\u5316 BeanFactory\n        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(\"classpath:spring.xml\");\n        applicationContext.registerShutdownHook();\n\n        \/\/ 2. \u83b7\u53d6Bean\u5bf9\u8c61\u8c03\u7528\u65b9\u6cd5\n        UserService userService01 = applicationContext.getBean(\"userService\", UserService.class);\n        UserService userService02 = applicationContext.getBean(\"userService\", UserService.class);\n\n        \/\/ 3. \u914d\u7f6e scope=\"prototype\/singleton\"\n        System.out.println(\"userService01:\"+userService01);\n        System.out.println(\"userService02:\"+userService02);\n\n        \/\/ 4.\u68c0\u9a8cuserService\u539f\u578b\u6a21\u5f0f\uff08\u5e94\u4e3afalse\uff09\n        System.out.println(\"userService01 == userService02?\");\n        System.out.println(userService01 == userService02);\n\n        \/\/ 5. \u68c0\u9a8cuserDao\u5355\u4f8b\u6a21\u5f0f\uff08\u5e94\u4e3atrue\uff09\n        System.out.println(\"userService01.getUserDao() == userService02.getUserDao()?\");\n        System.out.println(userService01.getUserDao() == userService02.getUserDao());\n    }<\/code><\/pre>\n\n\n\n
                                                                                      \u7ed3\u679c\uff1a<\/p>\n\n\n\n
                                                                                      userService01:com.miniSpring.test.bean.UserService$$EnhancerByCGLIB$$593a1b41@54422e18\nuserService02:com.miniSpring.test.bean.UserService$$EnhancerByCGLIB$$593a1b41@117159c0\nuserService01 == userService02?\nfalse\nuserService01.getUserDao() == userService02.getUserDao()?\ntrue<\/code><\/pre>\n\n\n\n
                                                                                      \u53ef\u4ee5\u770b\u5230\u4e24\u4e2auserService\u7684hashcode\u4e0d\u4e00\u6837\uff0c\u8bf4\u660e\u539f\u578b\u6a21\u5f0f\u914d\u7f6e\u751f\u6548\uff1b
                                                                                      \u800c\u4e24\u4e2auserService\u7684UserDao()\u6bd4\u8f83\u662f\u76f8\u540c\u7684\uff0c\u8bf4\u660e\u4ee3\u7406\u7684\u5355\u4f8b\u6a21\u5f0f\u751f\u6548\u3002<\/p>\n\n\n\n
                                                                                      \u5355\u5143\u6d4b\u8bd5(\u4ee3\u7406\u5bf9\u8c61)\uff1a<\/h3>\n\n\n\n
                                                                                      @Test
                                                                                      public void test_factory_bean() {
                                                                                          \/\/ 1.\u521d\u59cb\u5316 BeanFactory
                                                                                          ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(\"classpath:spring.xml\");
                                                                                          applicationContext.registerShutdownHook();

                                                                                          \/\/ 2. \u8c03\u7528\u4ee3\u7406\u65b9\u6cd5
                                                                                          UserService userService = applicationContext.getBean(\"userService\", UserService.class);
                                                                                          System.out<\/em>.println(\"\u6d4b\u8bd5\u7ed3\u679c\uff1a\" + userService.queryUserInfo());
                                                                                      }<\/code><\/pre>\n\n\n\n
                                                                                      \u6d4b\u8bd5\u7ed3\u679c\uff1a<\/p>\n\n\n\n
                                                                                      \u6d4b\u8bd5\u7ed3\u679c\uff1a\u4f60\u88ab\u4ee3\u7406\u4e86 queryUserName\uff1aCMD137,\u817e\u8baf,\u6df1\u5733<\/code><\/pre>\n\n\n\n
                                                                                      \u4ee3\u7406\u751f\u6548\u3002<\/p>\n\n\n\n
                                                                                      Step 10\uff1a\u5bb9\u5668\u4e8b\u4ef6\u548c\u4e8b\u4ef6\u76d1\u542c\u5668<\/h1>\n\n\n\n
                                                                                      \u5728 Spring \u6846\u67b6\u4e2d\uff0c\u5bb9\u5668\u4e0d\u4ec5\u8d1f\u8d23\u7ba1\u7406 Bean \u7684\u751f\u547d\u5468\u671f\uff0c\u8fd8\u63d0\u4f9b\u4e86\u4e8b\u4ef6\u53d1\u5e03\u4e0e\u76d1\u542c\u673a\u5236<\/strong>\uff0c\u7528\u4e8e\u5728\u5e94\u7528\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u5b9e\u73b0\u677e\u8026\u5408\u7684\u7ec4\u4ef6\u95f4\u901a\u4fe1\u3002
                                                                                      \u8fd9\u79cd\u673a\u5236\u57fa\u4e8e\u89c2\u5bdf\u8005\u6a21\u5f0f\uff08Observer Pattern\uff09<\/strong>\uff0c\u6838\u5fc3\u7531\u4e09\u90e8\u5206\u7ec4\u6210\uff1a<\/p>\n\n\n\n
                                                                                        \n
                                                                                      1. \u4e8b\u4ef6\uff08ApplicationEvent\uff09<\/strong>
                                                                                        \u7528\u4e8e\u63cf\u8ff0\u5728\u5bb9\u5668\u4e2d\u53d1\u751f\u7684\u7279\u5b9a\u52a8\u4f5c\uff0c\u4f8b\u5982\u5bb9\u5668\u542f\u52a8\u3001\u5237\u65b0\u3001\u5173\u95ed\u7b49\uff0c\u4e5f\u53ef\u4ee5\u662f\u7528\u6237\u81ea\u5b9a\u4e49\u7684\u4e1a\u52a1\u4e8b\u4ef6\u3002<\/li>\n\n\n\n
                                                                                      2. \u4e8b\u4ef6\u53d1\u5e03\u5668\uff08ApplicationEventPublisher\uff09<\/strong>
                                                                                        \u5bb9\u5668\u81ea\u8eab\u5145\u5f53\u4e8b\u4ef6\u53d1\u5e03\u5668\uff0c\u5f53\u7279\u5b9a\u52a8\u4f5c\u53d1\u751f\u65f6\uff0c\u4f1a\u5c06\u4e8b\u4ef6\u5bf9\u8c61\u4f20\u9012\u7ed9\u6240\u6709\u5339\u914d\u7684\u76d1\u542c\u5668\u3002<\/li>\n\n\n\n
                                                                                      3. \u4e8b\u4ef6\u76d1\u542c\u5668\uff08ApplicationListener\uff09<\/strong>
                                                                                        \u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u53ef\u63a5\u6536\u5e76\u5904\u7406\u7279\u5b9a\u7c7b\u578b\u7684\u4e8b\u4ef6\uff0c\u4ece\u800c\u5728\u4e8b\u4ef6\u53d1\u751f\u65f6\u81ea\u52a8\u89e6\u53d1\u76f8\u5e94\u903b\u8f91\u3002<\/li>\n<\/ol>\n\n\n\n
                                                                                        \u8fd9\u79cd\u673a\u5236\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u5e7f\u6cdb\u7528\u4e8e\uff1a<\/p>\n\n\n\n
                                                                                          \n
                                                                                        • \u5bb9\u5668\u751f\u547d\u5468\u671f\u56de\u8c03\uff08\u5982\u542f\u52a8\u3001\u5173\u95ed\u65f6\u6267\u884c\u8d44\u6e90\u521d\u59cb\u5316\u6216\u91ca\u653e\uff09\u3002<\/li>\n\n\n\n
                                                                                        • \u7ec4\u4ef6\u89e3\u8026\uff08\u4e0d\u540c\u6a21\u5757\u901a\u8fc7\u4e8b\u4ef6\u5f02\u6b65\u901a\u4fe1\uff0c\u800c\u65e0\u9700\u76f4\u63a5\u4f9d\u8d56\uff09\u3002<\/li>\n\n\n\n
                                                                                        • \u4e1a\u52a1\u903b\u8f91\u6269\u5c55\uff08\u53ef\u5728\u4e0d\u4fee\u6539\u6838\u5fc3\u6d41\u7a0b\u7684\u524d\u63d0\u4e0b\uff0c\u63d2\u5165\u65b0\u529f\u80fd\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                                          \u8bbe\u8ba1\uff1a<\/h2>\n\n\n\n
                                                                                          \u5728\u529f\u80fd\u5b9e\u73b0\u4e0a\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u51fa\u4e8b\u4ef6\u7c7b\u3001\u4e8b\u4ef6\u76d1\u542c\u3001\u4e8b\u4ef6\u53d1\u5e03\uff0c\u800c\u8fd9\u4e9b\u7c7b\u7684\u529f\u80fd\u9700\u8981\u7ed3\u5408\u5230 Spring \u7684 AbstractApplicationContext#refresh()\uff0c\u4ee5\u4fbf\u4e8e\u5904\u7406\u4e8b\u4ef6\u521d\u59cb\u5316\u548c\u6ce8\u518c\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u64cd\u4f5c\u3002\u6574\u4f53\u8bbe\u8ba1\u7ed3\u6784\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n\n
                                                                                          \"\"<\/div><\/figure>\n\n\n\n
                                                                                          \u5bb9\u5668\u4e8b\u4ef6\u548c\u4e8b\u4ef6\u76d1\u542c\u5668\u5b9e\u73b0\u7c7b\u5173\u7cfb\uff1a<\/h2>\n\n\n\n
                                                                                          \"\"<\/div><\/figure>\n\n\n\n
                                                                                          \u5b9e\u73b0\uff1a<\/h2>\n\n\n\n
                                                                                          0.\u62d3\u5c55\u5de5\u5177\u7c7b\uff1a<\/h3>\n\n\n\n
                                                                                          ClassUtils\uff1a<\/p>\n\n\n\n
                                                                                          \/**\n * \u5224\u65ad\u6307\u5b9a\u7c7b\u662f\u5426\u4e3a CGLIB \u52a8\u6001\u4ee3\u7406\u751f\u6210\u7684\u7c7b\u3002\n *\n * @param clazz \u8981\u68c0\u67e5\u7684\u7c7b\u5bf9\u8c61\n * @return \u5982\u679c\u662f CGLIB \u4ee3\u7406\u7c7b\u8fd4\u56de true\uff0c\u5426\u5219\u8fd4\u56de false\n *\/\npublic static boolean isCglibProxyClass(Class<?> clazz) {\n    return (clazz != null && isCglibProxyClassName(clazz.getName()));\n}\n\n\/**\n * \u5224\u65ad\u6307\u5b9a\u7c7b\u540d\u662f\u5426\u4e3a CGLIB \u52a8\u6001\u4ee3\u7406\u751f\u6210\u7684\u7c7b\u540d\u3002\n *\n * @param className \u8981\u68c0\u67e5\u7684\u7c7b\u540d\u5b57\u7b26\u4e32\n * @return \u5982\u679c\u7c7b\u540d\u5305\u542b CGLIB \u4ee3\u7406\u6807\u8bc6\u201c$$\u201d\u8fd4\u56de true\uff0c\u5426\u5219\u8fd4\u56de false\n *\/\npublic static boolean isCglibProxyClassName(String className) {\n    return (className != null && className.contains(\"$$\"));\n}\n<\/code><\/pre>\n\n\n\n
                                                                                          <\/p>\n\n\n\n
                                                                                          1.\u5b9a\u4e49\u548c\u5b9e\u73b0\u4e8b\u4ef6\uff1a<\/h3>\n\n\n\n
                                                                                            \n
                                                                                          • ApplicationEvent \u662f\u5b9a\u4e49\u4e8b\u4ef6\u7684\u62bd\u8c61\u7c7b\uff0c\u6240\u6709\u7684\u4e8b\u4ef6\u5305\u62ec\u5173\u95ed\u3001\u5237\u65b0\uff0c\u4ee5\u53ca\u7528\u6237\u81ea\u5df1\u5b9e\u73b0\u7684\u4e8b\u4ef6\uff0c\u90fd\u9700\u8981\u7ee7\u627f\u8fd9\u4e2a\u7c7b\u3002<\/li>\n\n\n\n
                                                                                          • ContextClosedEvent\u3001ContextRefreshedEvent\uff0c\u5206\u522b\u662f Spring \u6846\u67b6\u81ea\u5df1\u5b9e\u73b0\u7684\u4e24\u4e2a\u4e8b\u4ef6\u7c7b\uff0c\u53ef\u4ee5\u7528\u4e8e\u76d1\u542c\u5237\u65b0\u548c\u5173\u95ed\u52a8\u4f5c\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                                            ApplicationEvent<\/strong>\uff1a<\/p>\n\n\n\n
                                                                                            \/**
                                                                                            <\/em> * <\/em>\u5177\u5907\u4e8b\u4ef6\u529f\u80fd\u7684\u62bd\u8c61\u7c7b
                                                                                            <\/em> <\/em>* <\/em>\u7ee7\u627f\u81ea <\/em>{<\/em>@link <\/em><\/strong>java.util.EventObject}<\/em>\uff0c\u5c01\u88c5\u4e86\u4e8b\u4ef6\u6e90\u5bf9\u8c61\u3002
                                                                                            <\/em> <\/em>* <\/em>\u6240\u6709\u5bb9\u5668\u4e8b\u4ef6\u4e0e\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u90fd\u5e94\u7ee7\u627f\u8be5\u7c7b\u3002
                                                                                            <\/em> <\/em>*\/
                                                                                            <\/em>public abstract class ApplicationEvent extends EventObject {

                                                                                                \/**
                                                                                            <\/em>     * <\/em>\u6784\u9020\u4e8b\u4ef6\u5bf9\u8c61\u3002
                                                                                            <\/em>     <\/em>*\/
                                                                                            <\/em>    <\/em>public ApplicationEvent(Object source) {
                                                                                                    super(source);
                                                                                                }

                                                                                            }<\/code><\/pre>\n\n\n\n
                                                                                            ApplicationContextEvent<\/strong>\uff1a<\/p>\n\n\n\n
                                                                                            \/**
                                                                                            <\/em> * <\/em>\u5e94\u7528\u4e0a\u4e0b\u6587\u4e8b\u4ef6\u57fa\u7c7b\u3002
                                                                                            <\/em> <\/em>* <\/em>\u7ee7\u627f\u81ea <\/em>{<\/em>@link <\/em><\/strong>ApplicationEvent}<\/em>\uff0c\u7528\u4e8e\u5c01\u88c5\u4e0e <\/em>{<\/em>@link <\/em><\/strong>ApplicationContext} <\/em>\u76f8\u5173\u7684\u4e8b\u4ef6\u3002
                                                                                            <\/em> <\/em>* <\/em>\u6240\u6709\u5bb9\u5668\u7ea7\u522b\u7684\u4e8b\u4ef6\uff08\u5982\u5237\u65b0\u3001\u542f\u52a8\u3001\u5173\u95ed\uff09\u90fd\u5e94\u7ee7\u627f\u8be5\u7c7b\u3002
                                                                                            <\/em> <\/em>*\/
                                                                                            <\/em>public class ApplicationContextEvent extends ApplicationEvent {

                                                                                                \/**
                                                                                            <\/em>     * <\/em>\u521b\u5efa\u5e94\u7528\u4e0a\u4e0b\u6587\u4e8b\u4ef6\u3002
                                                                                            <\/em>     <\/em>*\/
                                                                                            <\/em>    <\/em>public ApplicationContextEvent(Object source) {
                                                                                                    super(source);
                                                                                                }

                                                                                                \/**
                                                                                            <\/em>     * <\/em>\u83b7\u53d6\u89e6\u53d1\u8be5\u4e8b\u4ef6\u7684 <\/em>{<\/em>@link <\/em><\/strong>ApplicationContext}<\/em>\u3002
                                                                                            <\/em>     <\/em>*\/
                                                                                            <\/em>    <\/em>public final ApplicationContext getApplicationContext() {
                                                                                                    return (ApplicationContext) getSource();
                                                                                                }

                                                                                            }<\/code><\/pre>\n\n\n\n
                                                                                            ContextClosedEvent<\/strong>\uff1a<\/p>\n\n\n\n
                                                                                            \/**
                                                                                            <\/em> * <\/em>\u5bb9\u5668\u5173\u95ed\u4e8b\u4ef6\u3002
                                                                                            <\/em> <\/em>* <\/em>\u5f53 <\/em>{<\/em>@link <\/em><\/strong>ApplicationContext} <\/em>\u88ab\u5173\u95ed\u65f6\u53d1\u5e03\u3002
                                                                                            <\/em> <\/em>*\/
                                                                                            <\/em>public class ContextClosedEvent extends ApplicationContextEvent {

                                                                                                \/**
                                                                                            <\/em>     * <\/em>\u521b\u5efa\u5bb9\u5668\u5173\u95ed\u4e8b\u4ef6\u3002
                                                                                            <\/em>     <\/em>*
                                                                                            <\/em>     * <\/em>@param <\/em><\/strong>source <\/em>\u4e8b\u4ef6\u6e90\uff0c\u5373\u88ab\u5173\u95ed\u7684 <\/em>{<\/em>@link <\/em><\/strong>ApplicationContext}<\/em>\u3002
                                                                                            <\/em>     <\/em>*\/
                                                                                            <\/em>    <\/em>public ContextClosedEvent(Object source) {
                                                                                                    super(source);
                                                                                                }

                                                                                            }<\/code><\/pre>\n\n\n\n
                                                                                            ContextRefreshedEvent<\/strong>\uff1a<\/p>\n\n\n\n
                                                                                            \/**\n * \u5bb9\u5668\u5237\u65b0\u4e8b\u4ef6\u3002\n * \u5f53 {@link ApplicationContext} \u521d\u59cb\u5316\u6216\u5237\u65b0\u5b8c\u6210\u65f6\u53d1\u5e03\u3002\n *\/\npublic class ContextRefreshedEvent extends ApplicationContextEvent {\n\n    \/**\n     * \u521b\u5efa\u5bb9\u5668\u5237\u65b0\u4e8b\u4ef6\u3002\n     *\n     * @param source \u4e8b\u4ef6\u6e90\uff0c\u5373\u5df2\u5237\u65b0\u5b8c\u6210\u7684 {@link ApplicationContext}\u3002\n     *\/\n    public ContextRefreshedEvent(Object source) {\n        super(source);\n    }\n\n}\n<\/code><\/pre>\n\n\n\n
                                                                                            2.\u4e8b\u4ef6\u76d1\u542c\u5668\uff1a<\/h3>\n\n\n\n
                                                                                            \/**
                                                                                            <\/em> * <\/em>\u5e94\u7528\u4e8b\u4ef6\u76d1\u542c\u5668\u63a5\u53e3\uff0c\u9700\u7531\u4e8b\u4ef6\u76d1\u542c\u5668\u5b9e\u73b0\u3002
                                                                                            <\/em> <\/em>*  * <\/em>\u57fa\u4e8e\u6807\u51c6\u7684 <\/em><code><\/em>java.util.EventListener<\/em><\/code> <\/em>\u63a5\u53e3\uff0c
                                                                                            <\/em> <\/em>*  * <\/em>\u91c7\u7528\u89c2\u5bdf\u8005\u8bbe\u8ba1\u6a21\u5f0f\uff08<\/em>Observer Pattern<\/em>\uff09\u3002
                                                                                            <\/em> <\/em>*\/
                                                                                            <\/em>public interface ApplicationListener<E extends ApplicationEvent> extends EventListener {

                                                                                                \/**
                                                                                            <\/em>     * <\/em>\u5904\u7406\u5e94\u7528\u4e8b\u4ef6
                                                                                            <\/em>     <\/em>*\/
                                                                                            <\/em>    <\/em>void onApplicationEvent(E event);

                                                                                            }<\/code><\/pre>\n\n\n\n
                                                                                            3.\u4e8b\u4ef6\u5e7f\u64ad\u5668\uff1a<\/h3>\n\n\n\n
                                                                                            \u63a5\u6536\u4e8b\u4ef6\u53d1\u5e03\u5668\u4f20\u6765\u7684\u4e8b\u4ef6\uff0c\u7136\u540e\u904d\u5386\u6240\u6709\u5df2\u6ce8\u518c\u76d1\u542c\u5668\uff0c\u8c03\u7528\u5b83\u4eec\u7684\u4e8b\u4ef6\u5904\u7406\u65b9\u6cd5\uff0c\u5b9e\u73b0\u4e8b\u4ef6\u7684\u5206\u53d1\u3002<\/p>\n\n\n\n
                                                                                            \u5728 Spring \u6846\u67b6\u4e2d\uff0cApplicationEventMulticaster<\/code> \u662f\u4e8b\u4ef6\u5e7f\u64ad\u5668\u7684\u6838\u5fc3\u63a5\u53e3\u3002\u5b83\u7531\u5bb9\u5668\u7ef4\u62a4\uff0c\u6240\u6709\u76d1\u542c\u5668\u90fd\u5411\u5b83\u6ce8\u518c\uff0c\u5f53\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u5b83\u4f1a\u8c03\u7528\u76f8\u5e94\u76d1\u542c\u5668\u7684\u56de\u8c03\u65b9\u6cd5\u3002<\/p>\n\n\n\n
                                                                                            3.1 \u5e94\u7528\u4e8b\u4ef6\u5e7f\u64ad\u5668\u63a5\u53e3<\/em>\uff1a<\/h4>\n\n\n\n
                                                                                            \n\/**\n * \u5e94\u7528\u4e8b\u4ef6\u5e7f\u64ad\u5668\u63a5\u53e3\u3002\n * \u8d1f\u8d23\u5c06 {<\/em>@link <\/em><\/strong>ApplicationEvent} \u5e7f\u64ad\u7ed9\u6240\u6709\u5df2\u6ce8\u518c\u7684 {<\/em>@link <\/em><\/strong>ApplicationListener}\u3002\n * \u5e7f\u64ad\u5668\u4e0d\u5173\u5fc3\u4e8b\u4ef6\u7684\u5177\u4f53\u6765\u6e90\uff0c\u53ea\u8d1f\u8d23\u5206\u53d1\u5230\u5408\u9002\u7684\u76d1\u542c\u5668\u3002\n *\/\n<\/em>public interface ApplicationEventMulticaster {\n\n    \/**\n     * \u6dfb\u52a0\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u4f7f\u5176\u80fd\u63a5\u6536\u6240\u6709\u4e8b\u4ef6\u901a\u77e5\u3002\n     *\/\n    <\/em>void addApplicationListener(ApplicationListener<?> listener);\n\n    \/**\n     * \u79fb\u9664\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u4f7f\u5176\u4e0d\u518d\u63a5\u6536\u4e8b\u4ef6\u901a\u77e5\u3002\n     *\/\n    <\/em>void removeApplicationListener(ApplicationListener<?> listener);\n\n    \/**\n     * \u5c06\u4e8b\u4ef6\u5e7f\u64ad\u7ed9\u6240\u6709\u5339\u914d\u7684\u76d1\u542c\u5668\u3002\n     *\/\n    <\/em>void multicastEvent(ApplicationEvent event);\n\n}<\/code><\/pre>\n\n\n\n
                                                                                            3.2 \u62bd\u8c61\u5e94\u7528\u4e8b\u4ef6\u5e7f\u64ad\u5668\u57fa\u7c7b\uff1a<\/h4>\n\n\n\n
                                                                                            \u8fd9\u4e2a\u7c7b\u662f\u4e8b\u4ef6\u5e7f\u64ad\u5668\u7684\u62bd\u8c61\u57fa\u7840\uff0c\u5b9e\u73b0\u4e86\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u7ba1\u7406\u548c\u7b5b\u9009\u529f\u80fd\u3002\u5b83\u7ef4\u62a4\u4e86\u6240\u6709\u6ce8\u518c\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u5e76\u80fd\u6839\u636e\u53d1\u5e03\u7684\u4e8b\u4ef6\u7c7b\u578b\uff0c\u7b5b\u9009\u51fa\u5bf9\u8be5\u4e8b\u4ef6\u611f\u5174\u8da3\u7684\u76d1\u542c\u5668\uff0c\u786e\u4fdd\u4e8b\u4ef6\u53ea\u88ab\u5408\u9002\u7684\u76d1\u542c\u5668\u5904\u7406\u3002\u901a\u8fc7\u6cdb\u578b\u53cd\u5c04\u5224\u65ad\u76d1\u542c\u5668\u652f\u6301\u7684\u4e8b\u4ef6\u7c7b\u578b\uff0c\u652f\u6301\u4e8b\u4ef6\u7ee7\u627f\u4f53\u7cfb\u3002<\/p>\n\n\n\n
                                                                                            implements BeanFactoryAware\u53ef\u4ee5\u8ba9 AbstractApplicationEventMulticaster<\/code> \u80fd\u591f\u83b7\u53d6\u5230 Spring \u5bb9\u5668\u4e2d\u7684 BeanFactory<\/code> \u5b9e\u4f8b\uff0c\u4ece\u800c\u65b9\u4fbf\u5b83\u5728\u4e8b\u4ef6\u5e7f\u64ad\u8fc7\u7a0b\u4e2d\u5bf9\u76d1\u542c\u5668\u6216\u76f8\u5173 Bean \u8fdb\u884c\u4f9d\u8d56\u6ce8\u5165\u3001\u5ef6\u8fdf\u521d\u59cb\u5316\u6216\u83b7\u53d6\u5176\u4ed6\u5bb9\u5668\u7ba1\u7406\u7684\u8d44\u6e90\u3002<\/p>\n\n\n\n
                                                                                            \/**\n * \u62bd\u8c61\u5e94\u7528\u4e8b\u4ef6\u5e7f\u64ad\u5668\u57fa\u7c7b\uff0c\u5b9e\u73b0\u4e86 ApplicationEventMulticaster \u548c BeanFactoryAware\u3002\n * \u7ef4\u62a4\u6ce8\u518c\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u96c6\u5408\uff0c\u8d1f\u8d23\u7b5b\u9009\u5408\u9002\u76d1\u542c\u5668\u4ee5\u5206\u53d1\u4e8b\u4ef6\u3002\n * \u652f\u6301\u57fa\u4e8e\u6cdb\u578b\u53c2\u6570\u7c7b\u578b\u5224\u65ad\u76d1\u542c\u5668\u662f\u5426\u5bf9\u7279\u5b9a\u4e8b\u4ef6\u611f\u5174\u8da3\u3002\n *\/\npublic abstract class AbstractApplicationEventMulticaster implements ApplicationEventMulticaster, BeanFactoryAware {\n\n    \/**\n     * \u5df2\u6ce8\u518c\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u96c6\u5408\uff0c\u4f7f\u7528 LinkedHashSet \u4fdd\u8bc1\u987a\u5e8f\u4e14\u53bb\u91cd\u3002\n     *\/\n    public final Set<ApplicationListener<ApplicationEvent>> applicationListeners = new LinkedHashSet<>();\n\n    \/**\n     * Spring \u5bb9\u5668 BeanFactory \u5f15\u7528\uff0c\u7528\u4e8e\u76d1\u542c\u5668\u6216\u4e8b\u4ef6\u7684\u4f9d\u8d56\u6ce8\u5165\u3002\n     *\/\n    private BeanFactory beanFactory;\n\n    @Override\n    public void addApplicationListener(ApplicationListener<?> listener) {\n        applicationListeners.add((ApplicationListener<ApplicationEvent>) listener);\n    }\n\n    @Override\n    public void removeApplicationListener(ApplicationListener<?> listener) {\n        applicationListeners.remove(listener);\n    }\n\n    @Override\n    public final void setBeanFactory(BeanFactory beanFactory) {\n        this.beanFactory = beanFactory;\n    }\n\n    \/**\n     * \u6839\u636e\u4e8b\u4ef6\u7c7b\u578b\u7b5b\u9009\u51fa\u6240\u6709\u611f\u5174\u8da3\u7684\u76d1\u542c\u5668\u3002\n     *\n     * @param event \u5f53\u524d\u53d1\u5e03\u7684\u4e8b\u4ef6\n     * @return \u652f\u6301\u8be5\u4e8b\u4ef6\u7684\u76d1\u542c\u5668\u96c6\u5408\n     *\/\n    protected Collection<ApplicationListener> getApplicationListeners(ApplicationEvent event) {\n        LinkedList<ApplicationListener> allListeners = new LinkedList<>();\n        \/\/ \u904d\u5386\u5df2\u6ce8\u518c\u76d1\u542c\u5668\uff0c\u5224\u65ad\u662f\u5426\u652f\u6301\u8be5\u4e8b\u4ef6\n        for (ApplicationListener<ApplicationEvent> listener : applicationListeners) {\n            if (supportsEvent(listener, event)) {\n                allListeners.add(listener);\n            }\n        }\n        return allListeners;\n    }\n\n    \/**\n     * \u5224\u65ad\u76d1\u542c\u5668\u662f\u5426\u652f\u6301\u5904\u7406\u8be5\u4e8b\u4ef6\u3002\n     * \u901a\u8fc7\u53cd\u5c04\u83b7\u53d6\u76d1\u542c\u5668\u6cdb\u578b\u53c2\u6570\u7684\u5b9e\u9645\u7c7b\u578b\uff0c\u5224\u65ad\u8be5\u7c7b\u578b\u662f\u5426\u4e3a\u4e8b\u4ef6\u5bf9\u8c61\u7684\u8d85\u7c7b\u6216\u63a5\u53e3\u3002\n     *\n     * @param applicationListener \u4e8b\u4ef6\u76d1\u542c\u5668\n     * @param event               \u4e8b\u4ef6\u5bf9\u8c61\n     * @return \u5982\u679c\u76d1\u542c\u5668\u6cdb\u578b\u7c7b\u578b\u80fd\u63a5\u6536\u8be5\u4e8b\u4ef6\uff0c\u8fd4\u56de true\uff1b\u5426\u5219 false\u3002\n     *\/\n    protected boolean supportsEvent(ApplicationListener<ApplicationEvent> applicationListener, ApplicationEvent event) {\n        \/\/ \u83b7\u53d6\u76d1\u542c\u5668\u5b9e\u73b0\u7c7b\n        Class<? extends ApplicationListener> listenerClass = applicationListener.getClass();\n\n        \/\/ \u5224\u65ad\u662f\u5426\u4e3a CGLIB \u4ee3\u7406\u7c7b\uff0c\u662f\u5219\u83b7\u53d6\u5176\u7236\u7c7b(\u4ee3\u7406\u7c7b\u672c\u8eab\u4e0d\u5305\u542b\u6cdb\u578b\u4fe1\u606f\uff0c\u9700\u8981\u83b7\u53d6\u5176\u7236\u7c7b\uff08\u5373\u88ab\u4ee3\u7406\u7684\u76ee\u6807\u7c7b\uff09\u6765\u51c6\u786e\u83b7\u53d6\u6cdb\u578b\u53c2\u6570)\n        Class<?> targetClass = ClassUtils.isCglibProxyClass(listenerClass) ? listenerClass.getSuperclass() : listenerClass;\n\n        \/\/ \u83b7\u53d6\u5b9e\u73b0\u7684\u7b2c\u4e00\u4e2a\u63a5\u53e3\u7684\u6cdb\u578b\u7c7b\u578b\uff08\u901a\u5e38\u4e3a ApplicationListener<E>\uff09\n        Type genericInterface = targetClass.getGenericInterfaces()[0];\n\n        \/\/ \u83b7\u53d6\u6cdb\u578b\u53c2\u6570 E \u7684\u5b9e\u9645\u7c7b\u578b\n        Type actualTypeArgument = ((ParameterizedType) genericInterface).getActualTypeArguments()[0];\n        String className = actualTypeArgument.getTypeName();\n\n        Class<?> eventClassName;\n        try {\n            \/\/ \u52a0\u8f7d\u6cdb\u578b\u53c2\u6570\u5bf9\u5e94\u7684\u4e8b\u4ef6\u7c7b\n            eventClassName = Class.forName(className);\n        } catch (ClassNotFoundException e) {\n            throw new BeansException(\"\u9519\u8bef\u7684\u4e8b\u4ef6\u7c7b\u540d: \" + className);\n        }\n\n        \/\/ \u5224\u65ad\u4e8b\u4ef6\u7c7b\u662f\u5426\u4e3a\u6cdb\u578b\u53c2\u6570\u7c7b\u6216\u5176\u5b50\u7c7b\uff08\u652f\u6301\u4e8b\u4ef6\u7ee7\u627f\uff09\n        return eventClassName.isAssignableFrom(event.getClass());\n    }\n\n}<\/code><\/pre>\n\n\n\n
                                                                                            3.3 \u7b80\u5355\u7684\u5e94\u7528\u4e8b\u4ef6\u5e7f\u64ad\u5668\u5b9e\u73b0\u7c7b\uff1a<\/h4>\n\n\n\n
                                                                                              \n
                                                                                            • – \u7ba1\u7406\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u6ce8\u518c\u548c\u7b5b\u9009<\/li>\n\n\n\n
                                                                                            • – \u5b9e\u73b0\u4e8b\u4ef6\u7684\u540c\u6b65\u53d1\u5e03\u548c\u901a\u77e5\u673a\u5236<\/li>\n<\/ul>\n\n\n\n
                                                                                              \/**\n * \u7b80\u5355\u7684\u5e94\u7528\u4e8b\u4ef6\u5e7f\u64ad\u5668\u5b9e\u73b0\u7c7b\uff0c\u7ee7\u627f\u81ea AbstractApplicationEventMulticaster\u3002\n * \u8d1f\u8d23\u5c06\u4e8b\u4ef6\u540c\u6b65\u5730\u5e7f\u64ad\u7ed9\u6240\u6709\u5339\u914d\u7684\u76d1\u542c\u5668\u3002\n * \u901a\u8fc7\u6784\u9020\u65b9\u6cd5\u6ce8\u5165 BeanFactory\uff0c\u5b9e\u73b0\u76d1\u542c\u5668\u7684\u4f9d\u8d56\u7ba1\u7406\u3002\n *\n * \u4f5c\u7528\uff1a\n * - \u7ba1\u7406\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u6ce8\u518c\u548c\u7b5b\u9009\n * - \u5b9e\u73b0\u4e8b\u4ef6\u7684\u540c\u6b65\u53d1\u5e03\u548c\u901a\u77e5\u673a\u5236\n *\/\npublic class SimpleApplicationEventMulticaster extends AbstractApplicationEventMulticaster {\n\n    public SimpleApplicationEventMulticaster(BeanFactory beanFactory) {\n        setBeanFactory(beanFactory);\n    }\n\n    @SuppressWarnings(\"unchecked\")\n    @Override\n    public void multicastEvent(final ApplicationEvent event) {\n        \/\/ \u904d\u5386\u6240\u6709\u652f\u6301\u8be5\u4e8b\u4ef6\u7684\u76d1\u542c\u5668\uff0c\u9010\u4e2a\u540c\u6b65\u8c03\u7528\u5176\u4e8b\u4ef6\u5904\u7406\u65b9\u6cd5\n        for (final ApplicationListener listener : getApplicationListeners(event)) {\n            listener.onApplicationEvent(event);\n        }\n    }\n\n}<\/code><\/pre>\n\n\n\n
                                                                                              4.\u4e8b\u4ef6\u53d1\u5e03\u8005\u7684\u5b9a\u4e49\u548c\u5b9e\u73b0\uff1a<\/h3>\n\n\n\n
                                                                                              4.1 registerSingleton\uff1a<\/h4>\n\n\n\n
                                                                                              \u8fd9\u91cc\u53c8\u8981\u56de\u5230SingletonBeanRegistry\u8865\u5145\u6ce8\u518c\u5355\u4f8b\u5bf9\u8c61\u5230\u5bb9\u5668\u65b9\u6cd5\uff1a<\/p>\n\n\n\n
                                                                                              \/**
                                                                                              * \u6ce8\u518c\u5355\u4f8b\u5bf9\u8c61\u5230\u5bb9\u5668\uff0c\u540d\u79f0\u552f\u4e00\u3002
                                                                                              *\/
                                                                                              void registerSingleton(String beanName, Object singletonObject);<\/code><\/pre>\n\n\n\n
                                                                                              \u5bb9\u5668\u7684\u5355\u4f8b\u7ba1\u7406\u673a\u5236\uff0c\u4e8b\u4ef6\u5e7f\u64ad\u5668\u4f5c\u4e3a\u5173\u952e\u7ec4\u4ef6\uff0c\u9700\u8981\u88ab\u5bb9\u5668\u4ee5\u5355\u4f8b\u65b9\u5f0f\u7ba1\u7406\u548c\u5171\u4eab\uff0c\u8c03\u7528\u8be5\u65b9\u6cd5\u5b8c\u6210\u6ce8\u518c\u3002\u8fd9\u662f Spring \u5bb9\u5668\u5185\u90e8\u8bbe\u8ba1\u7684\u6807\u51c6\u64cd\u4f5c\uff0c\u4fdd\u8bc1\u4e86\u5e7f\u64ad\u5668\u7684\u751f\u547d\u5468\u671f\u548c\u8bbf\u95ee\u4e00\u81f4\u6027\u3002\u662f\u628a\u5df2\u6709\u7684\u5bf9\u8c61\uff08\u6b64\u5904\u662f\u4e8b\u4ef6\u5e7f\u64ad\u5668\u5b9e\u4f8b\uff09\u76f4\u63a5\u6ce8\u518c\u4e3a\u5355\u4f8b Bean\uff0c\u533a\u522b\u4e8e\u901a\u8fc7\u914d\u7f6e\u6216\u6ce8\u89e3\u521b\u5efa Bean\u3002\u8fd9\u662f\u4e00\u79cd\u201c\u7a0b\u5e8f\u5f0f\u201d\u6ce8\u518c\u5355\u4f8b\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n
                                                                                              \u90a3\u4e48\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u5c31\u8981\u5b9e\u73b0\uff1a<\/p>\n\n\n\n
                                                                                              DefaultSingletonBeanRegistry<\/p>\n\n\n\n
                                                                                              public void registerSingleton(String beanName, Object singletonObject) {
                                                                                                  singletonObjects.put(beanName, singletonObject);
                                                                                              }<\/pre>\n\n\n\n
                                                                                              <\/p>\n\n\n\n
                                                                                              4.2 \u5728AbstractApplicationContext \u4e2d\u6dfb\u52a0\u76f8\u5173\u673a\u5236\uff1a<\/h4>\n\n\n\n
                                                                                              \u5148\u8ba9 ApplicationContext \u7ee7\u627f\uff1a<\/strong><\/h4>\n\n\n\n
                                                                                              extends ListableBeanFactory, HierarchicalBeanFactory, ResourceLoader, ApplicationEventPublisher\u3002<\/pre>\n\n\n\n
                                                                                              \n
                                                                                              \u4e1c\u4e00\u4e0b\u897f\u4e00\u4e0b\u582a\u6bd4\u4e4b\u524d\u7684\u64cd\u4f5c\u7cfb\u7edf\u8bfe\u8bbe\uff0c\u540e\u6094\u770b\u8fd9\u4e2a\u6559\u7a0b\u4e86\uff0c\u57fa\u672c\u5168\u9760GPT\u8bb2\u89e3\uff0c\u539f\u6559\u6750\u53ea\u662f\u5728\u522b\u4eba\u5199\u7684\u4e0a\u9762\u52a0\u4e86\u4e00\u5806\u83ab\u540d\u5176\u5999\u7684\u5f15\u8a00\uff0c\u67b6\u6784\u56fe\u4e5f\u4e0d\u5b8c\u6574\uff0c\u670d\u4e86……………………<\/em><\/p>\n<\/blockquote>\n\n\n\n
                                                                                              <\/p>\n\n\n\n
                                                                                              ApplicationEventPublisher \u662f\u6574\u4e2a\u4e00\u4e2a\u4e8b\u4ef6\u7684\u53d1\u5e03\u63a5\u53e3\uff0c\u6240\u6709\u7684\u4e8b\u4ef6\u90fd\u9700\u8981\u4ece\u8fd9\u4e2a\u63a5\u53e3\u53d1\u5e03\u51fa\u53bb\u3002<\/p>\n\n\n\n
                                                                                              public abstract class AbstractApplicationContext extends DefaultResourceLoader implements ConfigurableApplicationContext {\n\n    public static final String APPLICATION_EVENT_MULTICASTER_BEAN_NAME = \"applicationEventMulticaster\";\n\n    private ApplicationEventMulticaster applicationEventMulticaster;\n\n    @Override\n    public void refresh() throws BeansException {\n\n        \/\/ 1. \u521b\u5efa BeanFactory\uff0c\u5e76\u52a0\u8f7d BeanDefinition\uff08\u4ece\u914d\u7f6e\u6587\u4ef6\u6216\u6ce8\u89e3\u4e2d\u89e3\u6790\u51fa Bean \u5b9a\u4e49\uff09\n        refreshBeanFactory();\n\n        \/\/ 2. \u83b7\u53d6\u5f53\u524d\u4e0a\u4e0b\u6587\u4f7f\u7528\u7684 BeanFactory\n        ConfigurableListableBeanFactory beanFactory = getBeanFactory();\n\n        \/\/ 3. \u6dfb\u52a0 ApplicationContextAwareProcessor\uff0c\u8fd9\u662f\u4e00\u4e2a\u7279\u6b8a\u7684 BeanPostProcessor\uff0c\n        \/\/ \u7528\u4e8e\u5728 Bean \u521d\u59cb\u5316\u524d\u81ea\u52a8\u56de\u8c03\u5b9e\u73b0\u4e86 ApplicationContextAware \u63a5\u53e3\u7684 Bean \u7684 setApplicationContext \u65b9\u6cd5\uff0c\n        \/\/ \u4f7f\u8fd9\u4e9b Bean \u80fd\u591f\u611f\u77e5\u5e76\u6301\u6709\u5f53\u524d ApplicationContext \u5b9e\u4f8b\u3002\n        \/\/ \u8be5\u5904\u7406\u5668\u5fc5\u987b\u63d0\u524d\u6ce8\u518c\uff0c\u786e\u4fdd\u540e\u7eed\u521b\u5efa\u7684\u6240\u6709\u76f8\u5173 Bean \u90fd\u80fd\u6b63\u786e\u83b7\u5f97 ApplicationContext\u3002\n        beanFactory.addBeanPostProcessor(new ApplicationContextAwareProcessor(this));\n\n\n        \/\/ 4. \u6267\u884c\u6240\u6709 BeanFactoryPostProcessor\uff0c\u5141\u8bb8\u4fee\u6539 BeanDefinition\n        \/\/ \uff08\u6b64\u65f6\u8fd8\u672a\u5b9e\u4f8b\u5316\u4efb\u4f55 Bean\uff09\n        invokeBeanFactoryPostProcessors(beanFactory);\n\n        \/\/ 5. \u6ce8\u518c\u6240\u6709 BeanPostProcessor\uff0c\u4e3a\u540e\u7eed Bean \u5b9e\u4f8b\u5316\u8fc7\u7a0b\u6dfb\u52a0\u6269\u5c55\u903b\u8f91\uff08\u5982 AOP\u3001\u4f9d\u8d56\u6ce8\u5165\u7b49\uff09\n        registerBeanPostProcessors(beanFactory);\n\n        \/\/ 6. \u521d\u59cb\u5316\u4e8b\u4ef6\u53d1\u5e03\u8005\n        initApplicationEventMulticaster();\n\n        \/\/ 7. \u6ce8\u518c\u4e8b\u4ef6\u76d1\u542c\u5668\n        registerListeners();\n\n        \/\/ 8. \u63d0\u524d\u5b9e\u4f8b\u5316\u6240\u6709\u975e\u61d2\u52a0\u8f7d\u7684\u5355\u4f8b Bean\uff08\u89e6\u53d1\u5b8c\u6574\u7684 Bean \u521b\u5efa\u6d41\u7a0b\uff09\n        beanFactory.preInstantiateSingletons();\n\n        \/\/ 9. \u53d1\u5e03\u5bb9\u5668\u5237\u65b0\u5b8c\u6210\u4e8b\u4ef6\n        finishRefresh();\n    }\n\n    \/**\n * \u521d\u59cb\u5316\u4e8b\u4ef6\u5e7f\u64ad\u5668\u3002\n * \u4ece BeanFactory \u83b7\u53d6\u6216\u521b\u5efa\u4e00\u4e2a SimpleApplicationEventMulticaster \u5b9e\u4f8b\uff0c\n * \u5e76\u5c06\u5176\u6ce8\u518c\u4e3a\u5355\u4f8b Bean\uff0c\u4f9b\u5bb9\u5668\u7ba1\u7406\u548c\u4e8b\u4ef6\u53d1\u5e03\u4f7f\u7528\u3002\n *\/\nprivate void initApplicationEventMulticaster() {\n    ConfigurableListableBeanFactory beanFactory = getBeanFactory();\n    applicationEventMulticaster = new SimpleApplicationEventMulticaster(beanFactory);\n    beanFactory.registerSingleton(APPLICATION_EVENT_MULTICASTER_BEAN_NAME, applicationEventMulticaster);\n}\n\n\/**\n * \u6ce8\u518c\u6240\u6709\u5df2\u5b9a\u4e49\u7684\u4e8b\u4ef6\u76d1\u542c\u5668\u3002\n * \u4ece\u5bb9\u5668\u4e2d\u83b7\u53d6\u6240\u6709\u5b9e\u73b0\u4e86 ApplicationListener \u63a5\u53e3\u7684 Bean\uff0c\n * \u5e76\u5c06\u5b83\u4eec\u6dfb\u52a0\u5230\u4e8b\u4ef6\u5e7f\u64ad\u5668\u7684\u76d1\u542c\u5668\u96c6\u5408\u4e2d\u3002\n *\/\nprivate void registerListeners() {\n    Collection<ApplicationListener> applicationListeners = getBeansOfType(ApplicationListener.class).values();\n    for (ApplicationListener listener : applicationListeners) {\n        applicationEventMulticaster.addApplicationListener(listener);\n    }\n}\n\n\/**\n * \u5b8c\u6210\u5bb9\u5668\u5237\u65b0\u64cd\u4f5c\u540e\u7684\u6536\u5c3e\u5de5\u4f5c\u3002\n * \u53d1\u5e03\u4e00\u4e2a ContextRefreshedEvent \u4e8b\u4ef6\uff0c\u901a\u77e5\u6240\u6709\u76d1\u542c\u5668\u5bb9\u5668\u5df2\u5237\u65b0\u5b8c\u6210\u3002\n *\/\nprivate void finishRefresh() {\n    publishEvent(new ContextRefreshedEvent(this));\n}\n\n\/**\n * \u53d1\u5e03\u4e8b\u4ef6\u63a5\u53e3\u5b9e\u73b0\u3002\n * \u5c06\u4e8b\u4ef6\u4ea4\u7531\u4e8b\u4ef6\u5e7f\u64ad\u5668\u8fdb\u884c\u591a\u64ad\uff0c\u901a\u77e5\u6240\u6709\u5339\u914d\u7684\u76d1\u542c\u5668\u3002\n *\n * @param event \u8981\u53d1\u5e03\u7684\u5e94\u7528\u4e8b\u4ef6\n *\/\n@Override\npublic void publishEvent(ApplicationEvent event) {\n    applicationEventMulticaster.multicastEvent(event);\n}\n\n\n    @Override\n    public void close() {\n        \/\/ \u53d1\u5e03\u5bb9\u5668\u5173\u95ed\u4e8b\u4ef6\n        publishEvent(new ContextClosedEvent(this));\n\n        \/\/ \u6267\u884c\u9500\u6bc1\u5355\u4f8bbean\u7684\u9500\u6bc1\u65b9\u6cd5\n        getBeanFactory().destroySingletons();\n    }\n\n}\n<\/code><\/pre>\n\n\n\n
                                                                                                \n
                                                                                              • \u5728\u62bd\u8c61\u5e94\u7528\u4e0a\u4e0b\u6587 AbstractApplicationContext#refresh \u4e2d\uff0c\u4e3b\u8981\u65b0\u589e\u4e86\u00a0\u521d\u59cb\u5316\u4e8b\u4ef6\u53d1\u5e03\u8005<\/code>\u3001\u6ce8\u518c\u4e8b\u4ef6\u76d1\u542c\u5668<\/code>\u3001\u53d1\u5e03\u5bb9\u5668\u5237\u65b0\u5b8c\u6210\u4e8b\u4ef6<\/code>\uff0c\u4e09\u4e2a\u65b9\u6cd5\u7528\u4e8e\u5904\u7406\u4e8b\u4ef6\u64cd\u4f5c\u3002<\/li>\n\n\n\n
                                                                                              • \u521d\u59cb\u5316\u4e8b\u4ef6\u53d1\u5e03\u8005(initApplicationEventMulticaster)\uff0c\u4e3b\u8981\u7528\u4e8e\u5b9e\u4f8b\u5316\u4e00\u4e2a SimpleApplicationEventMulticaster\uff0c\u8fd9\u662f\u4e00\u4e2a\u4e8b\u4ef6\u5e7f\u64ad\u5668\u3002<\/li>\n\n\n\n
                                                                                              • \u6ce8\u518c\u4e8b\u4ef6\u76d1\u542c\u5668(registerListeners)\uff0c\u901a\u8fc7 getBeansOfType \u65b9\u6cd5\u83b7\u53d6\u5230\u6240\u6709\u4ece spring.xml \u4e2d\u52a0\u8f7d\u5230\u7684\u4e8b\u4ef6\u914d\u7f6e Bean \u5bf9\u8c61\u3002<\/li>\n\n\n\n
                                                                                              • \u53d1\u5e03\u5bb9\u5668\u5237\u65b0\u5b8c\u6210\u4e8b\u4ef6(finishRefresh)\uff0c\u53d1\u5e03\u4e86\u7b2c\u4e00\u4e2a\u670d\u52a1\u5668\u542f\u52a8\u5b8c\u6210\u540e\u7684\u4e8b\u4ef6\uff0c\u8fd9\u4e2a\u4e8b\u4ef6\u901a\u8fc7 publishEvent \u53d1\u5e03\u51fa\u53bb\uff0c\u5176\u5b9e\u4e5f\u5c31\u662f\u8c03\u7528\u4e86 applicationEventMulticaster.multicastEvent(event); \u65b9\u6cd5\u3002<\/li>\n\n\n\n
                                                                                              • \u6700\u540e\u662f\u4e00\u4e2a close \u65b9\u6cd5\u4e2d\uff0c\u65b0\u589e\u52a0\u4e86\u53d1\u5e03\u4e00\u4e2a\u5bb9\u5668\u5173\u95ed\u4e8b\u4ef6\u3002publishEvent(new ContextClosedEvent(this));<\/code><\/li>\n<\/ul>\n\n\n\n
                                                                                                \u6d4b\u8bd5\uff1a<\/h2>\n\n\n\n
                                                                                                1.\u521b\u5efa\u4e00\u4e2a\u4e8b\u4ef6\u548c\u76d1\u542c\u5668\uff1a<\/h3>\n\n\n\n
                                                                                                public class CustomEvent extends ApplicationContextEvent {

                                                                                                    private Long id;
                                                                                                    private String message;

                                                                                                    \/**
                                                                                                <\/em>     * Constructs a prototypical Event.
                                                                                                <\/em>     *
                                                                                                <\/em>     * <\/em>@param <\/em><\/strong>source <\/em>The object on which the Event initially occurred.
                                                                                                <\/em>     * <\/em>@throws <\/em><\/strong>IllegalArgumentException if source is null.
                                                                                                <\/em>     *\/
                                                                                                <\/em>    <\/em>public CustomEvent(Object source, Long id, String message) {
                                                                                                        super(source);
                                                                                                        this.id = id;
                                                                                                        this.message = message;
                                                                                                    }

                                                                                                    public Long getId() {
                                                                                                        return id;
                                                                                                    }

                                                                                                    public void setId(Long id) {
                                                                                                        this.id = id;
                                                                                                    }

                                                                                                    public String getMessage() {
                                                                                                        return message;
                                                                                                    }

                                                                                                    public void setMessage(String message) {
                                                                                                        this.message = message;
                                                                                                    }
                                                                                                }<\/code><\/pre>\n\n\n\n
                                                                                                public class CustomEventListener_1 implements ApplicationListener<CustomEvent> {\n\n    @Override\n    public void onApplicationEvent(CustomEvent event) {\n        System.out.println(\"CustomEventListener_1\u76d1\u542c\u5230\u4e8b\u4ef6\uff1a\" + event);\n        System.out.println(\"\\t\u6536\u5230\uff1a\" + event.getSource() + \"\u6d88\u606f;\u65f6\u95f4\uff1a\" + new Date());\n        System.out.println(\"\\t\u6d88\u606f\uff1a\" + event.getId() + \":\" + event.getMessage());\n    }\n\n}<\/code><\/pre>\n\n\n\n
                                                                                                public class CustomEventListener_2 implements ApplicationListener<CustomEvent> {

                                                                                                    @Override
                                                                                                    public void onApplicationEvent(CustomEvent event) {
                                                                                                        System.out<\/em>.println(\"CustomEventListener_2\u76d1\u542c\u5230\u4e8b\u4ef6\uff1a\" + event);
                                                                                                        System.out<\/em>.println(\"\\t\u5904\u7406Custom\u4e1a\u52a1\u4e2d......\");
                                                                                                    }

                                                                                                }<\/pre>\n\n\n\n
                                                                                                public class ContextRefreshedEventListener implements ApplicationListener<ContextRefreshedEvent> {\n\n    @Override\n    public void onApplicationEvent(ContextRefreshedEvent event) {\n        System.out.println(\"\u5237\u65b0\u4e8b\u4ef6\uff1a\" + this.getClass().getName());\n    }\n\n}<\/code><\/pre>\n\n\n\n
                                                                                                public class ContextClosedEventListener implements ApplicationListener<ContextClosedEvent> {\n\n    @Override\n    public void onApplicationEvent(ContextClosedEvent event) {\n        System.out.println(\"\u5173\u95ed\u4e8b\u4ef6\uff1a\" + this.getClass().getName());\n    }\n\n}<\/code><\/pre>\n\n\n\n
                                                                                                2. \u914d\u7f6e\u6587\u4ef6\uff1a<\/h3>\n\n\n\n
                                                                                                <?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<beans>\n\n    <bean class=\"cn.bugstack.springframework.test.event.ContextRefreshedEventListener\"\/>\n\n    <bean class=\"cn.bugstack.springframework.test.event.CustomEventListener\"\/>\n\n    <bean class=\"cn.bugstack.springframework.test.event.ContextClosedEventListener\"\/>\n\n<\/beans>\n<\/code><\/pre>\n\n\n\n
                                                                                                3. \u5355\u5143\u6d4b\u8bd5\uff1a<\/h3>\n\n\n\n
                                                                                                public class ApiTest {<\/p>\n\n\n\n
                                                                                                @Test\npublic void test_event() {\n    ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext(\"classpath:spring.xml\");\n    applicationContext.publishEvent(new CustomEvent(applicationContext, 1019129009086763L, \"\u6210\u529f\u4e86\uff01\"));\n\n    applicationContext.registerShutdownHook();\n}<\/code><\/pre>\n\n\n\n
                                                                                                }<\/p>\n\n\n\n
                                                                                                \u7ed3\u679c\uff1a<\/h3>\n\n\n\n
                                                                                                \u5237\u65b0\u4e8b\u4ef6\uff1acom.miniSpring.test.event.ContextRefreshedEventListener$$EnhancerByCGLIB$$f5717a18\nCustomEventListener_1\u76d1\u542c\u5230\u4e8b\u4ef6\uff1acom.miniSpring.test.event.CustomEvent[source=com.miniSpring.context.support.ClassPathXmlApplicationContext@644baf4a]\n\t\u6536\u5230\uff1acom.miniSpring.context.support.ClassPathXmlApplicationContext@644baf4a\u6d88\u606f;\u65f6\u95f4\uff1aSun Aug 10 17:36:32 CST 2025\n\t\u6d88\u606f\uff1a1019129009086763:\u6210\u529f\u4e86\uff01\nCustomEventListener_2\u76d1\u542c\u5230\u4e8b\u4ef6\uff1acom.miniSpring.test.event.CustomEvent[source=com.miniSpring.context.support.ClassPathXmlApplicationContext@644baf4a]\n\t\u5904\u7406Custom\u4e1a\u52a1\u4e2d......\n\u5173\u95ed\u4e8b\u4ef6\uff1acom.miniSpring.test.event.ContextClosedEventListener$$EnhancerByCGLIB$$fe9f94a\n<\/code><\/pre>\n\n\n\n
                                                                                                \u5bb9\u5668\u4e8b\u4ef6\u4e0e\u4e8b\u4ef6\u76d1\u542c\u673a\u5236\u5b8c\u6574\u8c03\u7528\u94fe\u8be6\u89e3\uff1a<\/h2>\n\n\n\n
                                                                                                \u5173\u952e\u7ec4\u4ef6<\/h3>\n\n\n\n
                                                                                                  \n
                                                                                                • ApplicationEvent<\/strong>\uff1a\u4e8b\u4ef6\u5bf9\u8c61\uff0c\u63cf\u8ff0\u5bb9\u5668\u53d1\u751f\u7684\u67d0\u79cd\u52a8\u4f5c\uff08\u5982\u5237\u65b0\u3001\u5173\u95ed\uff09\uff0c\u4e5f\u652f\u6301\u7528\u6237\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u3002<\/li>\n\n\n\n
                                                                                                • ApplicationListener<\/strong>\uff1a\u4e8b\u4ef6\u76d1\u542c\u5668\u63a5\u53e3\uff0c\u5b9e\u73b0\u6b64\u63a5\u53e3\u7684\u7c7b\u53ef\u4ee5\u63a5\u6536\u5e76\u5904\u7406\u6307\u5b9a\u7c7b\u578b\u7684\u4e8b\u4ef6\u3002<\/li>\n\n\n\n
                                                                                                • ApplicationEventMulticaster<\/strong>\uff08\u4e8b\u4ef6\u5e7f\u64ad\u5668\uff09\uff1a\u8d1f\u8d23\u7ef4\u62a4\u76d1\u542c\u5668\u5217\u8868\uff0c\u5e76\u5c06\u4e8b\u4ef6\u5e7f\u64ad\u7ed9\u5339\u914d\u7684\u76d1\u542c\u5668\u3002<\/li>\n\n\n\n
                                                                                                • ApplicationEventPublisher<\/strong>\uff1a\u4e8b\u4ef6\u53d1\u5e03\u63a5\u53e3\uff0c\u53d1\u5e03\u4e8b\u4ef6\u7684\u5165\u53e3\u3002<\/li>\n\n\n\n
                                                                                                • ApplicationContext<\/strong>\uff1a\u5bb9\u5668\u6838\u5fc3\u63a5\u53e3\uff0c\u96c6\u6210\u4e8b\u4ef6\u53d1\u5e03\u5668\uff0c\u7ba1\u7406 Bean\u3001\u76d1\u542c\u5668\u53ca\u4e8b\u4ef6\u7684\u751f\u547d\u5468\u671f\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                                                  1. \u5bb9\u5668\u542f\u52a8\u9636\u6bb5<\/h3>\n\n\n\n
                                                                                                    \n
                                                                                                  • \u5bb9\u5668\u521d\u59cb\u5316\u65f6\uff0c\u8c03\u7528 initApplicationEventMulticaster()<\/code>\uff1a\n
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                                                                                                    • \u521b\u5efa\u4e00\u4e2a SimpleApplicationEventMulticaster<\/code> \u5b9e\u4f8b\uff08\u5b9e\u73b0\u4e86\u4e8b\u4ef6\u5e7f\u64ad\u5668\u529f\u80fd\uff09\u3002<\/li>\n\n\n\n
                                                                                                    • \u901a\u8fc7 beanFactory.registerSingleton<\/code> \u5c06\u8be5\u5e7f\u64ad\u5668\u6ce8\u518c\u4e3a\u5355\u4f8b Bean\uff0c\u4f9b\u5bb9\u5668\u7ba1\u7406\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                                                                    • \u8c03\u7528 registerListeners()<\/code>\uff1a\n
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                                                                                                      • \u5bb9\u5668\u626b\u63cf\u5e76\u83b7\u53d6\u6240\u6709\u5b9e\u73b0\u4e86 ApplicationListener<\/code> \u63a5\u53e3\u7684\u76d1\u542c\u5668 Bean\u3002<\/li>\n\n\n\n
                                                                                                      • \u5c06\u8fd9\u4e9b\u76d1\u542c\u5668\u6ce8\u518c\u5230 applicationEventMulticaster<\/code> \u4e2d\uff0c\u4fdd\u5b58\u5230\u76d1\u542c\u5668\u96c6\u5408\u91cc\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
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                                                                                                        2. \u4e8b\u4ef6\u53d1\u5e03\u6d41\u7a0b<\/h3>\n\n\n\n
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                                                                                                        • \u53d1\u5e03\u4e8b\u4ef6<\/strong>\uff1a\u5bb9\u5668\u8c03\u7528 publishEvent(ApplicationEvent event)<\/code> \u65b9\u6cd5\u3002<\/li>\n\n\n\n
                                                                                                        • \u4e8b\u4ef6\u53d1\u5e03\u65b9\u6cd5\u5185\u90e8\uff0c\u8c03\u7528 applicationEventMulticaster.multicastEvent(event)<\/code>\uff0c\u89e6\u53d1\u4e8b\u4ef6\u5e7f\u64ad\u3002<\/li>\n<\/ul>\n\n\n\n
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                                                                                                          3. \u4e8b\u4ef6\u5e7f\u64ad\u8fc7\u7a0b<\/h3>\n\n\n\n
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                                                                                                          • SimpleApplicationEventMulticaster.multicastEvent(event)<\/code>\uff1a\n
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                                                                                                            • \u8c03\u7528\u57fa\u7c7b AbstractApplicationEventMulticaster.getApplicationListeners(event)<\/code> \u83b7\u53d6\u5bf9\u8be5\u4e8b\u4ef6\u611f\u5174\u8da3\u7684\u6240\u6709\u76d1\u542c\u5668\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                                                                            • AbstractApplicationEventMulticaster.getApplicationListeners(event)<\/code>\uff1a\n
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                                                                                                              • \u904d\u5386\u5df2\u6ce8\u518c\u76d1\u542c\u5668\u96c6\u5408\u3002<\/li>\n\n\n\n
                                                                                                              • \u901a\u8fc7 supportsEvent(listener, event)<\/code> \u5224\u65ad\u76d1\u542c\u5668\u662f\u5426\u652f\u6301\u8be5\u4e8b\u4ef6\u7c7b\u578b\u3002\n
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                                                                                                                • \u5229\u7528\u53cd\u5c04\u83b7\u53d6\u76d1\u542c\u5668\u6cdb\u578b\u53c2\u6570\uff08\u76d1\u542c\u7684\u4e8b\u4ef6\u7c7b\u578b\uff09\u3002<\/li>\n\n\n\n
                                                                                                                • \u5224\u65ad\u8be5\u6cdb\u578b\u4e8b\u4ef6\u7c7b\u578b\u662f\u5426\u4e3a\u53d1\u5e03\u4e8b\u4ef6\u7684\u7236\u7c7b\u6216\u63a5\u53e3\uff08\u652f\u6301\u4e8b\u4ef6\u7ee7\u627f\uff09\u3002<\/li>\n\n\n\n
                                                                                                                • \u7279\u6b8a\u5904\u7406\uff1a\u5982\u679c\u76d1\u542c\u5668\u662f CGLIB \u52a8\u6001\u4ee3\u7406\u7c7b\uff0c\u5219\u83b7\u53d6\u5176\u7236\u7c7b\u8fdb\u884c\u6cdb\u578b\u7c7b\u578b\u89e3\u6790\uff0c\u4fdd\u8bc1\u6b63\u786e\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                                                                                • \u8fd4\u56de\u6240\u6709\u5339\u914d\u76d1\u542c\u5668\u5217\u8868\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                                                                                • SimpleApplicationEventMulticaster<\/code> \u6309\u987a\u5e8f\u9010\u4e2a\u8c03\u7528\u76d1\u542c\u5668\u7684 onApplicationEvent(event)<\/code> \u65b9\u6cd5\uff0c\u901a\u77e5\u76d1\u542c\u5668\u5904\u7406\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n\n\n\n
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                                                                                                                  4. \u76d1\u542c\u5668\u54cd\u5e94\u4e8b\u4ef6<\/h3>\n\n\n\n
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                                                                                                                  • \u6bcf\u4e2a\u5b9e\u73b0\u4e86 ApplicationListener<\/code> \u7684\u7c7b\u4f1a\u6267\u884c\u81ea\u5df1\u7684 onApplicationEvent<\/code> \u65b9\u6cd5\uff0c\u5b8c\u6210\u81ea\u5b9a\u4e49\u4e1a\u52a1\u903b\u8f91\u3002<\/li>\n<\/ul>\n\n\n\n
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                                                                                                                    5. \u5178\u578b\u4e8b\u4ef6\u793a\u4f8b<\/h3>\n\n\n\n
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                                                                                                                    • \u5f53\u5bb9\u5668\u5237\u65b0\u5b8c\u6210\u65f6\uff0c\u5bb9\u5668\u8c03\u7528 finishRefresh()<\/code>\uff1a\n
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                                                                                                                      • \u89e6\u53d1 publishEvent(new ContextRefreshedEvent(this))<\/code>\u3002<\/li>\n\n\n\n
                                                                                                                      • \u4e8b\u4ef6\u5e7f\u64ad\u5668\u5c06\u8be5\u5237\u65b0\u4e8b\u4ef6\u63a8\u9001\u7ed9\u6240\u6709\u611f\u5174\u8da3\u7684\u76d1\u542c\u5668\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n
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                                                                                                                        \u603b\u7ed3\u56fe\u793a\uff08\u8c03\u7528\u94fe\uff09<\/h2>\n\n\n\n
                                                                                                                        scss\u590d\u5236\u7f16\u8f91\u5bb9\u5668\u542f\u52a8\n  \u2193\ninitApplicationEventMulticaster() \u521b\u5efa\u5e76\u6ce8\u518c\u4e8b\u4ef6\u5e7f\u64ad\u5668\n  \u2193\nregisterListeners() \u6ce8\u518c\u6240\u6709\u76d1\u542c\u5668\u5230\u5e7f\u64ad\u5668\n  \u2193\npublishEvent(event) \u8c03\u7528\u4e8b\u4ef6\u53d1\u5e03\u63a5\u53e3\n  \u2193\napplicationEventMulticaster.multicastEvent(event) \u4e8b\u4ef6\u5e7f\u64ad\n  \u2193\ngetApplicationListeners(event) \u7b5b\u9009\u652f\u6301\u4e8b\u4ef6\u7684\u76d1\u542c\u5668\n  \u2193\nsupportsEvent() \u5224\u65ad\u76d1\u542c\u5668\u6cdb\u578b\u662f\u5426\u652f\u6301\u8be5\u4e8b\u4ef6\u7c7b\u578b\n  \u2193\n\u904d\u5386\u652f\u6301\u4e8b\u4ef6\u7684\u76d1\u542c\u5668\u5217\u8868\n  \u2193\n\u8c03\u7528 listener.onApplicationEvent(event)\n  \u2193\n\u76d1\u542c\u5668\u6267\u884c\u81ea\u5b9a\u4e49\u4e8b\u4ef6\u5904\u7406\u903b\u8f91\n<\/code><\/pre>\n\n\n\n
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                                                                                                                        \u673a\u5236\u6838\u5fc3\u8981\u70b9<\/h2>\n\n\n\n
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                                                                                                                        • \u4e8b\u4ef6\u548c\u76d1\u542c\u5668\u89e3\u8026<\/strong>\uff1a\u4e8b\u4ef6\u53d1\u5e03\u8005\u53ea\u8d1f\u8d23\u53d1\u5e03\u4e8b\u4ef6\uff0c\u76d1\u542c\u5668\u72ec\u7acb\u5904\u7406\uff0c\u4e92\u4e0d\u4f9d\u8d56\u3002<\/li>\n\n\n\n
                                                                                                                        • \u6cdb\u578b\u7c7b\u578b\u5339\u914d<\/strong>\uff1a\u652f\u6301\u76d1\u542c\u5668\u53ea\u5bf9\u7279\u5b9a\u4e8b\u4ef6\u7c7b\u578b\u611f\u5174\u8da3\uff0c\u907f\u514d\u65e0\u5173\u76d1\u542c\u5668\u6536\u5230\u4e8b\u4ef6\u3002<\/li>\n\n\n\n
                                                                                                                        • \u4ee3\u7406\u7c7b\u517c\u5bb9<\/strong>\uff1a\u5bf9 CGLIB \u4ee3\u7406\u7c7b\u7279\u6b8a\u5904\u7406\uff0c\u4fdd\u8bc1\u6cdb\u578b\u5224\u65ad\u6b63\u786e\u3002<\/li>\n\n\n\n
                                                                                                                        • \u5355\u4f8b\u5e7f\u64ad\u5668<\/strong>\uff1a\u5e7f\u64ad\u5668\u4f5c\u4e3a\u5bb9\u5668\u5355\u4f8b\uff0c\u7edf\u4e00\u7ba1\u7406\u4e8b\u4ef6\u5206\u53d1\uff0c\u4fdd\u8bc1\u4e00\u81f4\u6027\u3002<\/li>\n\n\n\n
                                                                                                                        • \u540c\u6b65\u5e7f\u64ad<\/strong>\uff1a\u4e8b\u4ef6\u540c\u6b65\u901a\u77e5\u76d1\u542c\u5668\uff0c\u7b80\u5316\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
                                                                                                                          \u5b66\u4e60xfg\u7684\u7248\u672c\uff1afuzhengwei\/small-spring: \ud83c\udf31\u300a Spring \u624b\u64b8\u4e13\u680f\u300b\uff0c\u672c\u4e13\u680f\u4ee5  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37,66],"tags":[64],"class_list":["post-1092","post","type-post","status-publish","format-standard","hentry","category-javaweblist","category-66","tag-spring"],"_links":{"self":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/1092","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1092"}],"version-history":[{"count":94,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/1092\/revisions"}],"predecessor-version":[{"id":1275,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/1092\/revisions\/1275"}],"wp:attachment":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1092"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1092"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1092"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}