{"id":558,"date":"2024-11-29T00:14:01","date_gmt":"2024-11-28T16:14:01","guid":{"rendered":"http:\/\/www.cmd137blog.top\/?p=558"},"modified":"2025-01-03T14:46:41","modified_gmt":"2025-01-03T06:46:41","slug":"web%e5%85%a5%e9%97%a8-%e5%88%86%e5%b1%82%e8%a7%a3%e8%80%a6","status":"publish","type":"post","link":"http:\/\/www.cmd137blog.top\/?p=558","title":{"rendered":"Web\u5165\u95e8-\u5206\u5c42\u89e3\u8026"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">1 \u4e09\u5c42\u67b6\u6784\uff1a<\/h1>\n\n\n\n<p>\u5355\u4e00\u804c\u8d23\u539f\u5219-&gt;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>controller\uff1a\u63a7\u5236\u5c42\uff0c\u63a5\u6536\u524d\u7aef\u53d1\u9001\u7684\u8bf7\u6c42\uff0c\u5bf9\u8bf7\u6c42\u8fdb\u884c\u5904\u7406\uff0c\u5e76\u76f8\u5e94\u6570\u636e\u3002<\/li>\n\n\n\n<li>service\uff1a\u4e1a\u52a1\u903b\u8f91\u5c42\uff0c\u5904\u7406\u5177\u4f53\u7684\u4e1a\u52a1\u903b\u8f91\u3002<\/li>\n\n\n\n<li>dao\uff1a\u6570\u636e\u8bbf\u95ee\u5c42\uff08Data Access Object\uff09\uff08\u6301\u4e45\u5c42\uff09\uff0c\u8d1f\u8d23\u6570\u636e\u8bbf\u95ee\u64cd\u4f5c\uff0c\u589e\u5220\u6539\u67e5<\/li>\n<\/ul>\n\n\n\n<p>\u76ee\u7684\uff1a\u590d\u7528\u6027\u5f3a\u3001\u4fbf\u4e8e\u7ef4\u62a4\u3001\u5229\u4e8e\u62d3\u5c55<\/p>\n\n\n\n<p>\u9762\u5411\u63a5\u53e3\u7684\u601d\u60f3\u3002<\/p>\n\n\n\n<p>\u793a\u4f8b\uff1a\u4ee5\u4e0a\u7bc7EmpController.java\u4e3a\u4f8b\uff0c\u5c06\u5176\u62c6\u5c01\u5230\u4e09\u5c42\u67b6\u6784\uff1a<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.1.DAO\uff1a<\/h2>\n\n\n\n<p>\u521b\u5efa\u63a5\u53e3\uff1aEmpDao.java:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface EmpDao {\n    \/\/\u83b7\u53d6\u5458\u5de5\u5217\u8868\u6570\u636e\n    public List&lt;Emp&gt; listEmp();\n}<\/code><\/pre>\n\n\n\n<p>\u5b9e\u73b0\u63a5\u53e3\u7684\u4e00\u79cd\u7c7b\uff1aEmpDaoA.java:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class EmpDaoA implements EmpDao {\n   @Override\n    public List&lt;Emp&gt; listEmp() {\n        \/\/1.\u52a0\u8f7d\u89e3\u6790xml\n        String file =this.getClass().getClassLoader().getResource(\"static\/emp.xml\").getFile();\/\/\u6b64\u5904\u53c2\u6570\u4e3a\"emp.xml\"\u5c31\u4e0d\u6b63\u5e38\u8fd0\u884c\uff08\u6709\u65f6\u5019\uff09\n        System.out.println(file);\n        List&lt;Emp&gt; empList= XmlParserUtils.parse(file, Emp.class);\n        return empList;\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">1.2 Service\uff1a<\/h2>\n\n\n\n<p>\u521b\u5efa\u63a5\u53e3\uff1aEmpService.java<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface EmpService {\n    public List&lt;Emp&gt; listEmp();\n}<\/code><\/pre>\n\n\n\n<p>\u5b9e\u73b0\u7c7b\uff1aEmpServiceA.java<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\npublic class EmpServiceA implements EmpService{\n\n    private EmpDao empDao=new EmpDaoA();\n\n    @Override\n    public List&lt;Emp&gt; listEmp() {\n        \/\/1.\u8c03\u7528DAO\u83b7\u53d6\u6570\u636e\u5bf9\u8c61\n        List&lt;Emp&gt;empList= empDao.listEmp();\n\n        \/\/2.\u5bf9\u6570\u636e\u8fdb\u884c\u8f6c\u6362\n        empList.stream().forEach(emp -&gt; {\n            String gender= emp.getGender();\n            if(\"1\".equals(gender))\n                emp.setGender(\"\u7537\");\n            else\n                emp.setGender(\"\u5973\");\n        });\n\n        empList.stream().forEach(emp-&gt;{\n            String job= emp.getJob();\n            if(\"1\".equals(job))\n                emp.setJob(\"\u8bb2\u5e08\");\n            else if(\"2\".equals(job))\n                emp.setJob(\"\u73ed\u4e3b\u4efb\");\n            else\n                emp.setJob(\"\u5c31\u4e1a\u6307\u5bfc\");\n        });\n        return empList;\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">1.3 Controller:<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>@RestController\npublic class EmpController {\n    private EmpService  empService= new  EmpServiceA();\n\n    @RequestMapping(\"\/listEmp\")\n    public Result list(){\n        \/\/controller\u8c03\u7528service\u83b7\u53d6\u6570\u636e\n        List&lt;Emp&gt; empList=empService.listEmp();\n\n        \/\/\u54cd\u5e94\n        return Result.success(empList);\n    }\n}<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">2 \u5206\u5c42\u89e3\u8026\uff1a<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5185\u805a\uff1a\u8f6f\u4ef6\u4e2d\u5404\u4e2a\u529f\u80fd\u6a21\u5757\u5185\u90e8\u7684\u529f\u80fd\u8054\u7cfb\u3002<\/li>\n\n\n\n<li>\u8026\u5408\uff1a\u8861\u91cf\u8f6f\u4ef6\u4e2d\u5404\u4e2a\u5c42\/\u6a21\u5757\u4e4b\u95f4\u7684\u4f9d\u8d56\u3001\u5173\u8054\u7684\u7a0b\u5ea6\u3002<\/li>\n\n\n\n<li>\u5e94\u8be5\u505a\u5230 \u9ad8\u5185\u805a\u4f4e\u8026\u5408\uff0c\u6700\u597d\u89e3\u9664\u8026\u5408<\/li>\n<\/ul>\n\n\n\n<p>\u5728\u4e0a\u4f8b\u4e2d\uff1acontroller\u5c42  \u901a\u8fc7private EmpService  empService= new  EmpServiceA(); \u4e0eservice\u5c42\u8026\u5408\u3002 service\u5c42\u901a\u8fc7 \u201c private EmpDao empDao=new EmpDaoA();\u201d\u800c\u4e0eDAO\u5c42\u8026\u5408\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u89e3\u8026\uff0c\u5f15\u5165\u5bb9\u5668\uff1a\u5c06\u5bf9\u8c61\u7684\u521b\u5efa\u3001\u914d\u7f6e\u548c\u751f\u547d\u5468\u671f\u7ba1\u7406\u4ece\u5e94\u7528\u4ee3\u7801\u4e2d\u5206\u79bb\u51fa\u6765\uff0c\u5b9e\u73b0\u5e94\u7528\u7a0b\u5e8f\u4e0d\u540c\u7ec4\u4ef6\u4e4b\u95f4\u7684\u89e3\u8026\u3002<\/p>\n\n\n\n<p>Spring\u7684\u6838\u5fc3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a7\u5236\u53cd\u8f6c\uff1aIOC\u3002\u5bf9\u8c61\u7684\u521b\u5efa\u63a7\u5236\u6743\u7531\u7a0b\u5e8f\u81ea\u8eab\u8f6c\u79fb\u5230\u5916\u90e8\uff08\u5bb9\u5668\uff09\u3002<\/li>\n\n\n\n<li>\u4f9d\u8d56\u6ce8\u5165\uff1aDI\u3002\u5bb9\u5668\u4e3a\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u8fd0\u884c\u65f6\uff0c\u6240\u4f9d\u8d56\u7684\u8d44\u6e90\u3002<\/li>\n\n\n\n<li>Bean\u5bf9\u8c61\uff1aIOC\u5bb9\u5668\u4e2d\u521b\u5efa\u3001\u7ba1\u7406\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">3 IOC&amp;DI\u5165\u95e8\uff1a<\/h1>\n\n\n\n<p>\u5c06\u4e0a\u4f8b\u89e3\u8026\uff1a<\/p>\n\n\n\n<p>1<strong>.IOC:<\/strong> \u5c06 service\u5c42\u3001Dao\u5c42\u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\uff0c\u4ea4\u7531IOC\u5bb9\u5668\u7ba1\u7406\uff1a@Component \u5bf9\u5e94\u5b9e\u73b0\u7c7b<\/p>\n\n\n\n<p>2.<strong>DI:<\/strong> \u4e3acontroller\u53caservice\u6ce8\u5165\u8fd0\u884c\u65f6\u4f9d\u8d56\u7684\u5bf9\u8c61\uff1a@Autowired \u5bf9\u5e94\u6210\u5458\u53d8\u91cf<\/p>\n\n\n\n<p>\u5982\u679c\u8981\u7528\u4e00\u4e2a\u63a5\u53e3\u7684\u5176\u4ed6\u5b9e\u73b0\uff0c\u5c31\u5728\u8981\u7528\u7684\u5b9e\u73b0\u4e0a\u6ce8\u89e3\uff0c\u4e0d\u7528\u7684\u6ce8\u91ca\u6389\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u540c\u65f6\u6709\u591a\u4e2a\uff0c\u9700\u8981\u4f7f\u7528@Primary \u6216 @<strong>Qualifier<\/strong> \u9009\u5b9a\uff0c\u5426\u5219\u4e0d\u80fd\u542f\u52a8\u670d\u52a1\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@RestController\npublic class EmpController {\n    @Autowired\/\/\u8fd0\u884c\u65f6\uff0cIOC\u5bb9\u5668\u5c06\u4f1a\u63d0\u4f9b\u8be5\u7c7b\u578b\u7684bean\u5bf9\u8c61\uff0c\u8d4b\u503c\u4e8e\u8be5\u53d8\u91cf\n    private EmpService  empService= new  EmpServiceA();\n\n    @RequestMapping(\"\/listEmp\")\n    public Result list(){\n        \/\/controller\u8c03\u7528service\u83b7\u53d6\u6570\u636e\n        List&lt;Emp> empList=empService.listEmp();\n\n        \/\/\u54cd\u5e94\n        return Result.success(empList);\n    }\n}\n\n@Component\/\/\u5c06\u5f53\u524d\u7c7b\u4ea4\u7531IOC\u5bb9\u5668\u7ba1\u7406\uff0c\u6210\u4e3a\u5bb9\u5668\u4e2d\u7684bean\npublic class EmpServiceA implements EmpService{\n\n    @Autowired\/\/\u8fd0\u884c\u65f6\uff0cIOC\u5bb9\u5668\u5c06\u4f1a\u63d0\u4f9b\u8be5\u7c7b\u578b\u7684bean\u5bf9\u8c61\uff0c\u8d4b\u503c\u4e8e\u8be5\u53d8\u91cf\n    private EmpDao empDao;\n\n    @Override\n    public List&lt;Emp> listEmp() {\n        \/\/1.\u8c03\u7528DAO\u83b7\u53d6\u6570\u636e\u5bf9\u8c61\n        List&lt;Emp>empList= empDao.listEmp();\n\n        \/\/2.\u5bf9\u6570\u636e\u8fdb\u884c\u8f6c\u6362\n        empList.stream().forEach(emp -> {\n            String gender= emp.getGender();\n            if(\"1\".equals(gender))\n                emp.setGender(\"\u7537\");\n            else\n                emp.setGender(\"\u5973\");\n        });\n\n        empList.stream().forEach(emp->{\n            String job= emp.getJob();\n            if(\"1\".equals(job))\n                emp.setJob(\"\u8bb2\u5e08\");\n            else if(\"2\".equals(job))\n                emp.setJob(\"\u73ed\u4e3b\u4efb\");\n            else\n                emp.setJob(\"\u5c31\u4e1a\u6307\u5bfc\");\n        });\n        return empList;\n    }\n}\n\n@Component\/\/\u5c06\u5f53\u524d\u7c7b\u4ea4\u7531IOC\u5bb9\u5668\u7ba1\u7406\uff0c\u6210\u4e3a\u5bb9\u5668\u4e2d\u7684bean\npublic class EmpDaoA implements EmpDao {\n    @Override\/\/\u8fd0\u884c\u65f6\uff0cIOC\u5bb9\u5668\u5c06\u4f1a\u63d0\u4f9b\u8be5\u7c7b\u578b\u7684bean\u5bf9\u8c61\uff0c\u8d4b\u503c\u4e8e\u8be5\u53d8\u91cf\n    public List&lt;Emp> listEmp() {\n        \/\/1.\u52a0\u8f7d\u89e3\u6790xml\n        String file =this.getClass().getClassLoader().getResource(\"static\/emp.xml\").getFile();\/\/\u6b64\u5904\u53c2\u6570\u4e3a\"emp.xml\"\u5c31\u4e0d\u6b63\u5e38\u8fd0\u884c\n        \/\/System.out.println(file);\n        List&lt;Emp> empList= XmlParserUtils.parse(file, Emp.class);\n        return empList;\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">3.1 IOC\uff1a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Bean\u7684\u58f0\u660e\uff1a<\/h3>\n\n\n\n<p>\u8981\u628a\u67d0\u4e2a\u5bf9\u8c61\u4ea4\u7ed9IOC\u5bb9\u5668\u7ba1\u7406\uff0c\u9700\u8981\u5728\u5bf9\u5e94\u7684\u7c7b\u4e0a\u52a0\u4e00\u4e0b\u6ce8\u91ca\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6ce8\u89e3<\/th><th>\u8bf4\u660e<\/th><th>\u4f4d\u7f6e<\/th><\/tr><\/thead><tbody><tr><td>@Component<\/td><td>\u58f0\u660ebean\u7684\u57fa\u7840\u6ce8\u89e3<\/td><td>\u4e0d\u5c5e\u4e8e\u4ee5\u4e0b\u4e09\u7c7b\u65f6\uff0c\u7528\u6b64\u6ce8\u89e3<\/td><\/tr><tr><td>@Controller<\/td><td>@Component\u7684\u884d\u751f\u6ce8\u89e3<\/td><td>\u6807\u6ce8\u5728\u63a7\u5236\u5668\u7c7b\u4e0a<\/td><\/tr><tr><td>@Service<\/td><td>@Component\u7684\u884d\u751f\u6ce8\u89e3<\/td><td>\u6807\u6ce8\u5728\u4e1a\u52a1\u7c7b\u4e0a<\/td><\/tr><tr><td>@Repository<\/td><td>@Component\u7684\u884d\u751f\u6ce8\u89e3<\/td><td>\u6807\u6ce8\u5728\u6570\u636e\u8bbf\u95ee\u7c7b\u4e0a\uff08\u7531\u4e8e\u4e0emybatis\u6574\u5408\uff0c\u7528\u7684\u5c11\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u58f0\u660ebean\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u901a\u8fc7value\u5c5e\u6027\u6307\u5b9abean\u7684\u540d\u5b57\uff0c\u5982\u679c\u6ca1\u6709\u6307\u5b9a\uff0c\u9ed8\u8ba4\u4e3a\u7c7b\u540d\u9996\u5b57\u6bcd\u5c0f\u5199\u3002<\/li>\n\n\n\n<li>\u4f7f\u7528\u4ee5\u4e0a\u56db\u4e2a\u6ce8\u89e3\u90fd\u53ef\u4ee5\u58f0\u660eBean\uff0c\u4f46\u5728springboot\u4e2d\uff0c\u58f0\u660e\u63a7\u5236\u5668controllerbean\u53ea\u80fd\u7528@Controller<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Bean\u7ec4\u4ef6\u626b\u63cf\uff1a<\/h3>\n\n\n\n<ul 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