{"id":10006437,"date":"2022-09-08T08:13:53","date_gmt":"2022-09-08T00:13:53","guid":{"rendered":"https:\/\/ityet.com\/?p=10006437"},"modified":"2022-09-08T08:13:53","modified_gmt":"2022-09-08T00:13:53","slug":"spring-%e4%b8%ad%e6%af%92%e5%a4%aa%e6%b7%b1%ef%bc%81%e7%a6%bb%e5%bc%80-spring-%e6%88%91%e5%b1%85%e7%84%b6%e8%bf%9e%e6%9c%80%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%8e%a5%e5%8f%a3%e9%83%bd%e4%b8%8d%e4%bc%9a","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006437","title":{"rendered":"Spring \u4e2d\u6bd2\u592a\u6df1\uff01\u79bb\u5f00 Spring \u6211\u5c45\u7136\u8fde\u6700\u57fa\u672c\u7684\u63a5\u53e3\u90fd\u4e0d\u4f1a\u5199\u4e86\u3002\u3002\u3002"},"content":{"rendered":"

\u6765\u6e90\uff1acnblogs.com\/lonely-wolf\/p\/14127957.html<\/p>\n

\u968f\u7740 Spring<\/code> \u7684\u5d1b\u8d77\u4ee5\u53ca\u5176\u529f\u80fd\u7684\u5b8c\u5584\uff0c\u73b0\u5728\u53ef\u80fd\u7edd\u5927\u90e8\u5206\u9879\u76ee\u7684\u5f00\u53d1\u90fd\u662f\u4f7f\u7528 Spring\uff08\u5168\u5bb6\u6876\uff09<\/code> \u6765\u8fdb\u884c\u5f00\u53d1\uff0cSpring<\/code>\u4e5f\u786e\u5b9e\u548c\u5176\u540d\u5b57\u4e00\u6837\uff0c\u662f\u5f00\u53d1\u8005\u7684\u6625\u5929\uff0cSpring<\/code> \u89e3\u653e\u4e86\u7a0b\u5e8f\u5458\u7684\u53cc\u624b\uff0c\u800c\u7b49\u5230 SpringBoot<\/code>\u51fa\u6765\u4e4b\u540e\u914d\u7f6e\u6587\u4ef6\u5927\u5927\u51cf\u5c11\uff0c\u66f4\u662f\u8fdb\u4e00\u6b65\u89e3\u653e\u4e86\u7a0b\u5e8f\u5458\u7684\u53cc\u624b\u3002<\/p>\n

\u4f46\u662f\u4e5f\u6b63\u662f\u56e0\u4e3aSpring<\/code>\u5bb6\u65cf\u4ea7\u54c1\u7684\u5f3a\u5927\uff0c\u4f7f\u5f97\u6211\u4eec\u4e60\u60ef\u4e86\u9762\u5411 Spring<\/code> \u5f00\u53d1\uff0c\u90a3\u4e48\u5047\u5982\u6709\u4e00\u5929\u6ca1\u6709\u4e86 Spring<\/code>\uff0c\u662f\u4e0d\u662f\u611f\u89c9\u5fc3\u91cc\u4e00\u7a7a\uff0c\u53ef\u80fd\u4e00\u4e0b\u5b50\u8fde\u6700\u57fa\u672c\u7684\u63a5\u53e3\u90fd\u4e0d\u4f1a\u5199\u4e86\uff0c\u5c24\u5176\u662f\u6ca1\u6709\u63a5\u89e6\u8fc7Servlet<\/code>\u7f16\u7a0b\u7684\u670b\u53cb\u3002\u56e0\u4e3a\u52a0\u5165\u6ca1\u6709\u4e86 Spring<\/code> \u7b49\u6846\u67b6\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u9700\u8981\u5229\u7528\u6700\u539f\u751f\u7684 Servlet<\/code> \u6765\u81ea\u5df1\u5b9e\u73b0\u63a5\u53e3\u8def\u5f84\u7684\u6620\u5c04\uff0c\u5bf9\u8c61\u4e5f\u9700\u8981\u81ea\u5df1\u8fdb\u884c\u7ba1\u7406\u3002<\/p>\n

Spring \u80fd\u5e2e\u6211\u4eec\u505a\u4ec0\u4e48<\/h2>\n

Spring<\/code> \u662f\u4e3a\u89e3\u51b3\u4f01\u4e1a\u7ea7\u5e94\u7528\u5f00\u53d1\u7684\u590d\u6742\u6027\u800c\u8bbe\u8ba1\u7684\u4e00\u6b3e\u6846\u67b6\uff0cSpring<\/code> \u7684\u8bbe\u8ba1\u7406\u5ff5\u5c31\u662f\uff1a\u7b80\u5316\u5f00\u53d1\u3002<\/p>\n

\u5728 Spring<\/code> \u6846\u67b6\u4e2d\uff0c\u4e00\u5207\u5bf9\u8c61\u90fd\u662f bean<\/code>\uff0c\u6240\u4ee5\u5176\u901a\u8fc7\u9762\u5411 bean<\/code> \u7f16\u7a0b\uff08BOP\uff09\uff0c\u7ed3\u5408\u5176\u6838\u5fc3\u601d\u60f3\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u548c\u9762\u5411\u5207\u9762(\uff08AOP\uff09\u7f16\u7a0b\uff0cSpring<\/code> \u5b9e\u73b0\u4e86\u5176\u4f1f\u5927\u7684\u7b80\u5316\u5f00\u53d1\u7684\u8bbe\u8ba1\u7406\u5ff5\u3002<\/p>\n

Spring \u6700\u65b0\u6559\u7a0b\uff1ahttps:\/\/www.javastack.cn\/spring\/<\/a><\/p>\n

\u63a7\u5236\u53cd\u8f6c\uff08IOC\uff09<\/h3>\n

IOC<\/code> \u5168\u79f0\u4e3a\uff1aInversion of Control\u3002\u63a7\u5236\u53cd\u8f6c\u7684\u57fa\u672c\u6982\u5ff5\u662f\uff1a\u4e0d\u7528\u521b\u5efa\u5bf9\u8c61\uff0c\u4f46\u662f\u9700\u8981\u63cf\u8ff0\u521b\u5efa\u5bf9\u8c61\u7684\u65b9\u5f0f\u3002<\/p>\n

\u7b80\u5355\u7684\u8bf4\u6211\u4eec\u672c\u6765\u5728\u4ee3\u7801\u4e2d\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u662f\u901a\u8fc7 new<\/code> \u5173\u952e\u5b57\uff0c\u800c\u4f7f\u7528\u4e86 Spring<\/code> \u4e4b\u540e\uff0c\u6211\u4eec\u4e0d\u5728\u9700\u8981\u81ea\u5df1\u53bb new<\/code> \u4e00\u4e2a\u5bf9\u8c61\u4e86\uff0c\u800c\u662f\u76f4\u63a5\u901a\u8fc7\u5bb9\u5668\u91cc\u9762\u53bb\u53d6\u51fa\u6765\uff0c\u518d\u5c06\u5176\u81ea\u52a8\u6ce8\u5165\u5230\u6211\u4eec\u9700\u8981\u7684\u5bf9\u8c61\u4e4b\u4e2d\uff0c\u5373\uff1a\u4f9d\u8d56\u6ce8\u5165\u3002<\/p>\n

\u4e5f\u5c31\u8bf4\u521b\u5efa\u5bf9\u8c61\u7684\u63a7\u5236\u6743\u4e0d\u5728\u6211\u4eec\u7a0b\u5e8f\u5458\u624b\u4e0a\u4e86\uff0c\u5168\u90e8\u4ea4\u7531 Spring<\/code> \u8fdb\u884c\u7ba1\u7406\uff0c\u7a0b\u5e8f\u8981\u53ea\u9700\u8981\u6ce8\u5165\u5c31\u53ef\u4ee5\u4e86\uff0c\u6240\u4ee5\u624d\u79f0\u4e4b\u4e3a\u63a7\u5236\u53cd\u8f6c<\/p>\n

\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09<\/h3>\n

\u4f9d\u8d56\u6ce8\u5165\uff08Dependency Injection\uff0cDI\uff09\u5c31\u662f Spring<\/code> \u4e3a\u4e86\u5b9e\u73b0\u63a7\u5236\u53cd\u8f6c\u7684\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff0c\u6240\u6709\u6709\u65f6\u5019\u6211\u4eec\u4e5f\u5c06\u63a7\u5236\u53cd\u8f6c\u76f4\u63a5\u79f0\u4e4b\u4e3a\u4f9d\u8d56\u6ce8\u5165\u3002<\/p>\n

\u9762\u5411\u5207\u9762\u7f16\u7a0b\uff08AOP\uff09<\/h3>\n

AOP<\/code> \u5168\u79f0\u4e3a\uff1aAspect Oriented Programming\u3002AOP<\/code>\u662f\u4e00\u79cd\u7f16\u7a0b\u601d\u60f3\uff0c\u5176\u6838\u5fc3\u6784\u9020\u662f\u65b9\u9762\uff08\u5207\u9762\uff09\uff0c\u5373\u5c06\u90a3\u4e9b\u5f71\u54cd\u591a\u4e2a\u7c7b\u7684\u516c\u5171\u884c\u4e3a\u5c01\u88c5\u5230\u53ef\u91cd\u7528\u7684\u6a21\u5757\u4e2d\uff0c\u800c\u4f7f\u539f\u672c\u7684\u6a21\u5757\u5185\u53ea\u9700\u5173\u6ce8\u81ea\u8eab\u7684\u4e2a\u6027\u5316\u884c\u4e3a\u3002<\/p>\n

AOP<\/code> \u7f16\u7a0b\u7684\u5e38\u7528\u573a\u666f\u6709\uff1aAuthentication\uff08\u6743\u9650\u8ba4\u8bc1\uff09\u3001Auto Caching\uff08\u81ea\u52a8\u7f13\u5b58\u5904\u7406\uff09\u3001Error Handling\uff08\u7edf\u4e00\u9519\u8bef\u5904\u7406\uff09\u3001Debugging\uff08\u8c03\u8bd5\u4fe1\u606f\u8f93\u51fa\uff09\u3001Logging\uff08\u65e5\u5fd7\u8bb0\u5f55\uff09\u3001Transactions\uff08\u4e8b\u52a1\u5904\u7406\uff09\u7b49\u3002<\/p>\n

\u5229\u7528 Spring \u6765\u5b8c\u6210 Hello World<\/h3>\n

\u6700\u539f\u751f\u7684 Spring<\/code> \u9700\u8981\u8f83\u591a\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u800c SpringBoot<\/code> \u7701\u7565\u4e86\u8bb8\u591a\u914d\u7f6e\uff0c\u76f8\u6bd4\u8f83\u4e8e\u539f\u59cb\u7684 Spring<\/code> \u53c8\u7b80\u5316\u4e86\u4e0d\u5c11\uff0c\u5728\u8fd9\u91cc\u6211\u4eec\u5c31\u4ee5 SpringBoot<\/code> \u4e3a\u4f8b\u6765\u5b8c\u6210\u4e00\u4e2a\u7b80\u5355\u7684\u63a5\u53e3\u5f00\u53d1\u3002<\/p>\n

Spring Boot \u57fa\u7840\u5c31\u4e0d\u4ecb\u7ecd\u4e86\uff0c\u63a8\u8350\u4e0b\u8fd9\u4e2a\u5b9e\u6218\u6559\u7a0b\uff1a<\/p>\n

https:\/\/github.com\/javastacks…<\/a><\/p><\/blockquote>\n

1\u3001\u65b0\u5efa\u4e00\u4e2a maven<\/code> \u9879\u76ee\uff0cpom<\/code> \u6587\u4ef6\u4e2d\u5f15\u5165\u4f9d\u8d56\uff08\u7701\u7565\u4e86\u5c11\u90e8\u5206\u5c5e\u6027\uff09\uff1a<\/p>\n

<parent>\n    <groupId>org.springframework.boot<\/groupId>\n    <artifactId>spring-boot-starter-parent<\/artifactId>\n    <version>2.4.0<\/version>\n    <relativePath\/>\n<\/parent>\n<dependencies>\n    <dependency>\n        <groupId>org.springframework.boot<\/groupId>\n        <artifactId>spring-boot-starter<\/artifactId>\n    <\/dependency>\n\n    <dependency>\n        <groupId>org.springframework.boot<\/groupId>\n        <artifactId>spring-boot-starter-web<\/artifactId>\n    <\/dependency>\n<\/dependencies><\/code><\/pre>\n
2\u3001\u65b0\u5efa\u4e00\u4e2a HelloController<\/code> \u7c7b\uff1a<\/p>\n
package com.lonely.wolf.note.springboot.demo;\n\nimport org.springframework.web.bind.annotation.GetMapping;\nimport org.springframework.web.bind.annotation.RequestMapping;\nimport org.springframework.web.bind.annotation.RestController;\n\n@RestController\n@RequestMapping("\/hello")\npublic class HelloController {\n    @GetMapping("\/demo")\n    public String helloWorld(String name){\n        return "Hello\uff1a" + name;\n    }\n}<\/code><\/pre>\n
3\u3001\u6700\u540e\u65b0\u5efa\u4e00\u4e2a SpringBoot<\/code> \u542f\u52a8\u7c7b\uff1a<\/p>\n
package com.lonely.wolf.note.springboot;\n\nimport org.springframework.boot.SpringApplication;\nimport org.springframework.boot.autoconfigure.SpringBootApplication;\n\n@SpringBootApplication(scanBasePackages = "com.lonely.wolf.note.springboot")\nclass MySpringBootApplication {\n    public static void main(String[] args) {\n        SpringApplication.run(MySpringBootApplication.class, args);\n    }\n}<\/code><\/pre>\n
4\u3001\u73b0\u5728\u5c31\u53ef\u4ee5\u8f93\u5165\u6d4b\u8bd5\u8def\u5f84\uff1ahttp:\/\/localhost:8080\/hello\/demo?name=\u53cc\u5b50\u5b64\u72fc<\/code> \u8fdb\u884c\u6d4b\u8bd5\uff0c\u6b63\u5e38\u8f93\u51fa\uff1aHello\uff1a\u53cc\u5b50\u5b64\u72fc<\/code>\u3002<\/p>\n
\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5229\u7528 SpringBoot<\/code> \u6765\u5b8c\u6210\u4e00\u4e2a\u7b80\u5355\u7684\u5e94\u7528\u5f00\u53d1\u975e\u5e38\u7b80\u5355\uff0c\u53ef\u4ee5\u4e0d\u9700\u8981\u4efb\u4f55\u914d\u7f6e\u5b8c\u6210\u4e00\u4e2a\u7b80\u5355\u7684\u5e94\u7528\uff0c\u8fd9\u662f\u56e0\u4e3a SpringBoot<\/code> \u5185\u90e8\u5df2\u7ecf\u505a\u597d\u4e86\u7ea6\u5b9a\uff08\u7ea6\u5b9a\u4f18\u4e8e\u914d\u7f6e\u601d\u60f3\uff09\uff0c\u5305\u62ec\u5bb9\u5668 Tomcat<\/code> \u90fd\u88ab\u9ed8\u8ba4\u96c6\u6210\uff0c\u6240\u4ee5\u6211\u4eec\u4e0d\u9700\u8981\u4efb\u4f55\u914d\u7f6e\u6587\u4ef6\u5c31\u53ef\u4ee5\u5b8c\u6210\u4e00\u4e2a\u7b80\u5355\u7684 demo<\/code> \u5e94\u7528\u3002<\/p>\n
\u5047\u5982\u6ca1\u6709\u4e86 Spring<\/h2>\n
\u901a\u8fc7\u4e0a\u9762\u7684\u4f8b\u5b50\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\uff0c\u5229\u7528 Spring<\/code> \u6765\u5b8c\u6210\u4e00\u4e2a Hello World<\/code> \u975e\u5e38\u7b80\u5355\uff0c\u4f46\u662f\u5047\u5982\u6ca1\u6709\u4e86 Spring<\/code>\uff0c\u6211\u4eec\u53c8\u8be5\u5982\u4f55\u5b8c\u6210\u8fd9\u6837\u7684\u4e00\u4e2a Hello World<\/code> \u63a5\u53e3\u5462\uff1f<\/p>\n
\u57fa\u4e8e Servlet \u5f00\u53d1<\/h3>\n
\u5728\u8fd8\u6ca1\u6709\u6846\u67b6\u4e4b\u524d\uff0c\u7f16\u7a0b\u5f0f\u57fa\u4e8e\u539f\u59cb\u7684 Servlet<\/code> \u8fdb\u884c\u5f00\u53d1\uff0c\u4e0b\u9762\u6211\u4eec\u5c31\u57fa\u4e8e\u539f\u751f\u7684 Servlet<\/code> \u6765\u5b8c\u6210\u4e00\u4e2a\u7b80\u5355\u7684\u63a5\u53e3\u8c03\u7528\u3002<\/p>\n
1\u3001pom<\/code> \u6587\u4ef6\u5f15\u5165\u4f9d\u8d56\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cpackage<\/code> \u5c5e\u6027\u8981\u8bbe\u7f6e\u6210 war<\/code> \u5305\uff0c\u4e3a\u4e86\u8282\u7701\u7bc7\u5e45\uff0c\u8fd9\u91cc\u6ca1\u6709\u5217\u51fa pom<\/code> \u5b8c\u6574\u7684\u4fe1\u606f\uff1a<\/p>\n
<packaging>war<\/packaging>\n<dependencies>\n        <dependency>\n            <groupId>javax.servlet<\/groupId>\n            <artifactId>servlet-api<\/artifactId>\n            <version>2.4<\/version>\n        <\/dependency>\n\n        <dependency>\n            <groupId>org.apache.commons<\/groupId>\n            <artifactId>commons-lang3<\/artifactId>\n            <version>3.7<\/version>\n        <\/dependency>\n\n        <dependency>\n            <groupId>com.alibaba<\/groupId>\n            <artifactId>fastjson<\/artifactId>\n            <version>1.2.72<\/version>\n        <\/dependency>\n    <\/dependencies><\/code><\/pre>\n
2\u3001\u5728 src\/main<\/code> \u4e0b\u9762\u65b0\u5efa\u6587\u4ef6\u5939 webapp\/WEB-INF<\/code>\uff0c\u7136\u540e\u5728 WEB-INF<\/code> \u4e0b\u9762\u65b0\u5efa\u4e00\u4e2a web.xml<\/code> \u6587\u4ef6\uff1a<\/p>\n
<?xml version="1.0" encoding="UTF-8"?>\n<web-app xmlns:xsi="http:\/\/www.w3.org\/2001\/XMLSchema-instance"\n xmlns="http:\/\/java.sun.com\/xml\/ns\/j2ee" xmlns:javaee="http:\/\/java.sun.com\/xml\/ns\/javaee"\n xmlns:web="http:\/\/java.sun.com\/xml\/ns\/javaee\/web-app_2_5.xsd"\n xsi:schemaLocation="http:\/\/java.sun.com\/xml\/ns\/j2ee http:\/\/java.sun.com\/xml\/ns\/j2ee\/web-app_2_4.xsd"\n version="2.4">\n <display-name>Lonely Wolf Web Application<\/display-name>\n <servlet>\n  <servlet-name>helloServlet<\/servlet-name>\n  <servlet-class>com.lonely.wolf.mini.spring.servlet.HelloServlet<\/servlet-class>\n <\/servlet>\n <servlet-mapping>\n  <servlet-name>helloServlet<\/servlet-name>\n  <url-pattern>\/hello\/*<\/url-pattern>\n <\/servlet-mapping>\n<\/web-app><\/code><\/pre>\n
\u8fd9\u91cc\u9762\u5b9a\u4e49\u4e86 selvlet<\/code> \u548c servlet-mapping<\/code> \u4e24\u4e2a\u6807\u7b7e\uff0c\u8fd9\u4e24\u4e2a\u6807\u7b7e\u5fc5\u987b\u4e00\u4e00\u5bf9\u5e94\uff0c\u4e0a\u9762\u7684\u6807\u7b7e\u5b9a\u4e49\u4e86 servlet<\/code> \u7684\u4f4d\u7f6e\uff0c\u800c\u4e0b\u9762\u7684 servlet-mapping<\/code> \u6587\u4ef6\u5b9a\u4e49\u4e86\u8def\u5f84\u7684\u6620\u5c04\uff0c\u8fd9\u4e24\u4e2a\u6807\u7b7e\u901a\u8fc7 servlet-name<\/code> \u6807\u7b7e\u5bf9\u5e94\u3002<\/p>\n
3\u3001\u65b0\u5efa\u4e00\u4e2a HelloServlet<\/code> \u7c7b\u7ee7\u627f HttpServlet<\/code>\uff1a<\/p>\n
package com.lonely.wolf.mini.spring.servlet;\n\nimport javax.servlet.ServletException;\nimport javax.servlet.http.HttpServlet;\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\nimport java.io.IOException;\n\n\/**\n * \u539f\u59cbServlet\u63a5\u53e3\u7f16\u5199\uff0c\u4e00\u822c\u9700\u8981\u5b9e\u73b0GET\u548cPOST\u65b9\u6cd5\uff0c\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u89c6\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u6027\u7ee7\u627f\n *\/\npublic class HelloServlet extends HttpServlet {\n    @Override\n    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n        this.doPost(request,response);\n    }\n\n    @Override\n    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n        response.setContentType("text\/html;charset=utf-8");\n        response.getWriter().write("Hello\uff1a" + request.getParameter("name"));\n    }\n}<\/code><\/pre>\n
4\u3001\u6267\u884c maven<\/code> \u6253\u5305\u547d\u4ee4\uff0c\u786e\u8ba4\u6210\u529f\u6253\u5305\u6210 war<\/code> \u5305\uff1a<\/p>\n
\"\"<\/p>\n
5\u3001RUN-->Edit Configurations<\/code>\uff0c\u7136\u540e\u70b9\u51fb\u5de6\u4e0a\u89d2\u7684 +<\/code> \u53f7\uff0c\u65b0\u5efa\u4e00\u4e2a Tomcat Server<\/code>\uff0c\u5982\u679c\u662f\u7b2c\u4e00\u6b21\u914d\u7f6e\uff0c\u9ed8\u8ba4\u6ca1\u6709 Tomcat Server<\/code> \u9009\u9879\uff0c\u9700\u8981\u70b9\u51fb\u5e95\u90e8\u7684 xx more items...<\/code>\uff1a<\/p>\n
\"\"<\/p>\n
6\u3001\u70b9\u51fb\u53f3\u8fb9\u7684 Deployment<\/code>\uff0c\u7136\u540e\u6309\u7167\u4e0b\u56fe\u4f9d\u6b21\u70b9\u51fb\uff0c\u6700\u540e\u5728\u5f39\u6846\u5185\u627e\u5230\u4e0a\u9762\u6253\u5305\u597d\u7684 war<\/code> \u5305\u6587\u4ef6\uff1a<\/p>\n
\"\"<\/p>\n
7\u3001\u9009\u4e2d\u4e4b\u540e\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0b\u9762 Application Context<\/code> \u9ed8\u8ba4\u4f1a\u5e26\u4e0a war<\/code> \u5305\u540d\uff0c\u4e3a\u4e86\u65b9\u4fbf\uff0c\u6211\u4eec\u9700\u8981\u628a\u5b83\u5220\u6389\uff0c\u5373\u4e0d\u7528\u4e0a\u4e0b\u6587\u8def\u5f84\uff0c\u53ea\u4fdd\u7559\u4e00\u4e2a\u6839\u8def\u5f84 \/<\/code> \uff08\u5f53\u7136\u4e0a\u4e0b\u6587\u4e5f\u53ef\u4ee5\u4fdd\u7559\uff0c\u4f46\u662f\u6bcf\u6b21\u8bf7\u6c42\u90fd\u8981\u5e26\u4e0a\u8fd9\u4e00\u90e8\u5206\uff09\uff0c \u518d\u9009\u62e9 Apply<\/code>\uff0c\u70b9\u51fb OK<\/code>\uff0c\u5373\u53ef\u5b8c\u6210\u90e8\u7f72\uff1a<\/p>\n
\"\"<\/p>\n
8\u3001\u6700\u540e\u6211\u4eec\u5728\u6d4f\u89c8\u5668\u8f93\u5165\u8bf7\u6c42\u8def\u5f84http:\/\/localhost:8080\/hello?name=\u53cc\u5b50\u5b64\u72fc<\/code>\uff0c\u5373\u53ef\u5f97\u5230\u8fd4\u56de\uff1aHello\uff1a\u53cc\u5b50\u5b64\u72fc<\/code>\u3002<\/p>\n
\u4e0a\u9762\u6211\u4eec\u5c31\u5b8c\u6210\u4e86\u4e00\u4e2a\u7b80\u5355\u7684 \u57fa\u4e8eServlet<\/code> \u7684\u63a5\u53e3\u5f00\u53d1\uff0c\u53ef\u4ee5\u770b\u5230\uff0c\u914d\u7f6e\u975e\u5e38\u9ebb\u70e6\uff0c\u6bcf\u589e\u52a0\u4e00\u4e2a Servlet<\/code> \u90fd\u9700\u8981\u589e\u52a0\u5bf9\u5e94\u7684\u914d\u7f6e\uff0c\u6240\u4ee5\u624d\u4f1a\u6709\u8bb8\u591a\u6846\u67b6\u7684\u51fa\u73b0\u6765\u5e2e\u6211\u4eec\u7b80\u5316\u5f00\u53d1\uff0c\u6bd4\u5982\u539f\u6765\u5f88\u6d41\u884c\u7684 Struts2<\/code> \u6846\u67b6\uff0c\u5f53\u7136\u73b0\u5728\u9664\u4e86\u4e00\u4e9b\u6bd4\u8f83\u8001\u7684\u9879\u76ee\uff0c\u4e00\u822c\u6211\u4eec\u90fd\u5f88\u5c11\u4f7f\u7528\uff0c\u800c\u66f4\u591a\u7684\u662f\u9009\u62e9 Spring<\/code> \u6846\u67b6\u6765\u8fdb\u884c\u5f00\u53d1\u3002<\/p>\n
\u6a21\u4eff Spring<\/h3>\n
Spring<\/code> \u7684\u6e90\u7801\u4f53\u7cfb\u975e\u5e38\u5e9e\u5927\uff0c\u5927\u90e8\u5206\u4eba\u5bf9\u5176\u6e90\u7801\u90fd\u656c\u800c\u8fdc\u4e4b\u3002\u786e\u5b9e\uff0cSpring<\/code> \u6bd5\u7adf\u7ecf\u8fc7\u4e86\u8fd9\u4e48\u591a\u5e74\u7684\u8fed\u4ee3\uff0c\u529f\u80fd\u4e30\u5bcc\uff0c\u9879\u76ee\u5e9e\u5927\uff0c\u4e0d\u662f\u4e00\u4e0b\u5b50\u5c31\u80fd\u770b\u61c2\u7684\u3002\u867d\u7136 Spring<\/code> \u96be\u4ee5\u7406\u89e3\uff0c\u4f46\u662f\u5176\u6700\u6838\u5fc3\u7684\u601d\u60f3\u4ecd\u7136\u662f\u6211\u4eec\u4e0a\u9762\u4ecb\u7ecd\u7684\u51e0\u70b9\uff0c\u63a5\u4e0b\u6765\u5c31\u57fa\u4e8e Spring<\/code> \u6700\u6838\u5fc3\u7684\u90e8\u5206\u6765\u6a21\u62df\uff0c\u81ea\u5df1\u52a8\u624b\u5b9e\u73b0\u4e00\u4e2a\u8d85\u7ea7\u8ff7\u4f60\u7248\u672c\u7684 Spring<\/code>\uff08\u6b64\u7248\u672c\u5e76\u4e0d\u5305\u542b AOP<\/code> \u529f\u80fd\uff09\u3002<\/p>\n
1\u3001pom<\/code> \u4f9d\u8d56\u548c\u4e0a\u9762\u4fdd\u6301\u4e0d\u53d8\uff0c\u7136\u540e web.xml<\/code> \u4f5c\u5982\u4e0b\u6539\u53d8\uff0c\u8fd9\u91cc\u4f1a\u62e6\u622a\u6240\u6709\u7684\u63a5\u53e3 \/*<\/code>\uff0c\u7136\u540e\u591a\u914d\u7f6e\u4e86\u4e00\u4e2a\u53c2\u6570\uff0c\u8fd9\u4e2a\u53c2\u6570\u5176\u5b9e\u4e5f\u662f\u4e3a\u4e86\u66f4\u5f62\u8c61\u7684\u6a21\u62df Spring<\/code>\uff1a<\/p>\n
<servlet>\n    <servlet-name>myDispatcherServlet<\/servlet-name>\n    <servlet-class>com.lonely.wolf.mini.spring.v1.MyDispatcherServlet<\/servlet-class>\n    <init-param>\n        <param-name>defaultConfig<\/param-name>\n        <param-value>application.properties<\/param-value>\n    <\/init-param>\n<\/servlet>\n\n<servlet-mapping>\n    <servlet-name>myDispatcherServlet<\/servlet-name>\n    <url-pattern>\/*<\/url-pattern>\n<\/servlet-mapping><\/code><\/pre>\n
2\u3001\u5728 respurces<\/code> \u4e0b\u9762\u65b0\u5efa\u4e00\u4e2a\u914d\u7f6e\u6587\u4ef6 application.properties<\/code>\uff0c\u7528\u6765\u5b9a\u4e49\u626b\u63cf\u7684\u57fa\u672c\u8def\u5f84\uff1a<\/p>\n
basePackages=com.lonely.wolf.mini.spring<\/code><\/pre>\n
3\u3001\u521b\u5efa\u4e00\u4e9b\u76f8\u5173\u7684\u6ce8\u89e3\u7c7b\uff1a<\/p>\n
package com.lonely.wolf.mini.spring.annotation;\n\nimport java.lang.annotation.*;\n\n@Target({ElementType.FIELD})\n@Retention(RetentionPolicy.RUNTIME)\n@Documented\npublic @interface WolfAutowired {\n    String value() default "";\n}\npackage com.lonely.wolf.mini.spring.annotation;\n\nimport java.lang.annotation.*;\n\n@Target({ElementType.TYPE})\n@Retention(RetentionPolicy.RUNTIME)\n@Documented\npublic @interface WolfController {\n    String value() default "";\n}\npackage com.lonely.wolf.mini.spring.annotation;\n\nimport java.lang.annotation.*;\n\n@Target({ElementType.METHOD})\n@Retention(RetentionPolicy.RUNTIME)\n@Documented\npublic @interface WolfGetMapping {\n    String value() default "";\n}\npackage com.lonely.wolf.mini.spring.annotation;\n\nimport java.lang.annotation.*;\n\n@Target({ElementType.PARAMETER})\n@Retention(RetentionPolicy.RUNTIME)\n@Documented\npublic @interface WolfRequestParam {\n    String value() default "";\n}\npackage com.lonely.wolf.mini.spring.annotation;\n\nimport java.lang.annotation.*;\n\n@Target({ElementType.TYPE})\n@Retention(RetentionPolicy.RUNTIME)\n@Documented\npublic @interface WolfService {\n    String value() default "";\n}<\/code><\/pre>\n
4\u3001\u8fd9\u4e2a\u65f6\u5019\u6700\u6838\u5fc3\u7684\u903b\u8f91\u5c31\u662f MyDispatcherServlet<\/code> \u7c7b\u4e86\uff1a<\/p>\n
package com.lonely.wolf.mini.spring.v1;\n\nimport com.lonely.wolf.mini.spring.annotation.*;\nimport com.lonely.wolf.mini.spring.v1.config.MyConfig;\nimport org.apache.commons.lang3.StringUtils;\n\nimport javax.servlet.ServletConfig;\nimport javax.servlet.ServletException;\nimport javax.servlet.http.HttpServlet;\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\nimport java.io.File;\nimport java.io.IOException;\nimport java.io.InputStream;\nimport java.lang.annotation.Annotation;\nimport java.lang.reflect.Field;\nimport java.lang.reflect.Method;\nimport java.net.URL;\nimport java.util.*;\n\npublic class MyDispatcherServlet extends HttpServlet {\n    private MyConfig myConfig = new MyConfig();\n    private List<String> classNameList = new ArrayList<String>();\n\n    private Map<String,Object> iocContainerMap = new HashMap<>();\n    private Map<String,HandlerMapping> handlerMappingMap = new HashMap<>();\n\n    @Override\n    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n        this.doPost(request,response);\n    }\n\n    @Override\n    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {\n        try {\n            this.doDispatch(request, response);\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n\n    private void doDispatch(HttpServletRequest request, HttpServletResponse response) throws Exception{\n        String requestUrl = this.formatUrl(request.getRequestURI());\n        HandlerMapping handlerMapping = handlerMappingMap.get(requestUrl);\n        if (null == handlerMapping){\n            response.getWriter().write("404 Not Found");\n            return;\n        }\n\n        \/\/\u83b7\u53d6\u65b9\u6cd5\u4e2d\u7684\u53c2\u6570\u7c7b\u578b\n        Class<?>[] paramTypeArr = handlerMapping.getMethod().getParameterTypes();\n        Object[] paramArr = new Object[paramTypeArr.length];\n\n        for (int i=0;i<paramTypeArr.length;i++){\n            Class<?> clazz = paramTypeArr[i];\n            \/\/\u53c2\u6570\u53ea\u8003\u8651\u4e09\u79cd\u7c7b\u578b\uff0c\u5176\u4ed6\u4e0d\u8003\u8651\n            if (clazz == HttpServletRequest.class){\n                paramArr[i] = request;\n            }else if (clazz == HttpServletResponse.class){\n                paramArr[i] = response;\n            } else if (clazz == String.class){\n                Map<Integer,String> methodParam = handlerMapping.getMethodParams();\n                paramArr[i] = request.getParameter(methodParam.get(i));\n            }else{\n                System.out.println("\u6682\u4e0d\u652f\u6301\u7684\u53c2\u6570\u7c7b\u578b");\n            }\n        }\n        \/\/\u53cd\u5c04\u8c03\u7528controller\u65b9\u6cd5\n        handlerMapping.getMethod().invoke(handlerMapping.getTarget(), paramArr);\n    }\n\n    private String formatUrl(String requestUrl) {\n        requestUrl = requestUrl.replaceAll("\/+","\/");\n        if (requestUrl.lastIndexOf("\/") == requestUrl.length() -1){\n            requestUrl = requestUrl.substring(0,requestUrl.length() -1);\n        }\n        return requestUrl;\n    }\n\n    @Override\n    public void init(ServletConfig config) throws ServletException {\n        \/\/1.\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\n        try {\n            doLoadConfig(config.getInitParameter("defaultConfig"));\n        } catch (Exception e) {\n            System.out.println("\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\u5931\u8d25");\n            return;\n        }\n\n        \/\/2.\u6839\u636e\u83b7\u53d6\u5230\u7684\u626b\u63cf\u8def\u5f84\u8fdb\u884c\u626b\u63cf\n        doScanPacakge(myConfig.getBasePackages());\n\n        \/\/3.\u5c06\u626b\u63cf\u5230\u7684\u7c7b\u8fdb\u884c\u521d\u59cb\u5316\uff0c\u5e76\u5b58\u653e\u5230IOC\u5bb9\u5668\n        doInitializedClass();\n\n        \/\/4.\u4f9d\u8d56\u6ce8\u5165\n        doDependencyInjection();\n\n        System.out.println("DispatchServlet Init End..." );\n    }\n\n    private void doDependencyInjection() {\n        if (iocContainerMap.size() == 0){\n            return;\n        }\n        \/\/\u5faa\u73afIOC\u5bb9\u5668\u4e2d\u7684\u7c7b\n        Iterator<Map.Entry<String,Object>> iterator = iocContainerMap.entrySet().iterator();\n\n        while (iterator.hasNext()){\n            Map.Entry<String,Object> entry = iterator.next();\n            Class<?> clazz = entry.getValue().getClass();\n            Field[] fields = clazz.getDeclaredFields();\n\n            \/\/\u5c5e\u6027\u6ce8\u5165\n            for (Field field : fields){\n                \/\/\u5982\u679c\u5c5e\u6027\u6709WolfAutowired\u6ce8\u89e3\u5219\u6ce8\u5165\u503c\uff08\u6682\u65f6\u4e0d\u8003\u8651\u5176\u4ed6\u6ce8\u89e3\uff09\n                if (field.isAnnotationPresent(WolfAutowired.class)){\n                    String value = toLowerFirstLetterCase(field.getType().getSimpleName());\/\/\u9ed8\u8ba4bean\u7684value\u4e3a\u7c7b\u540d\u9996\u5b57\u6bcd\u5c0f\u5199\n                    if (field.getType().isAnnotationPresent(WolfService.class)){\n                        WolfService wolfService = field.getType().getAnnotation(WolfService.class);\n                        value = wolfService.value();\n                    }\n                    field.setAccessible(true);\n                    try {\n                        Object target = iocContainerMap.get(beanName);\n                        if (null == target){\n                            System.out.println(clazz.getName() + "required bean:" + beanName + ",but we not found it");\n                        }\n                        field.set(entry.getValue(),iocContainerMap.get(beanName));\/\/\u521d\u59cb\u5316\u5bf9\u8c61\uff0c\u540e\u9762\u6ce8\u5165\n                    } catch (IllegalAccessException e) {\n                        e.printStackTrace();\n                    }\n                }\n            }\n\n            \/\/\u521d\u59cb\u5316HanderMapping\n            String requestUrl = "";\n            \/\/\u83b7\u53d6Controller\u7c7b\u4e0a\u7684\u8bf7\u6c42\u8def\u5f84\n            if (clazz.isAnnotationPresent(WolfController.class)){\n                requestUrl = clazz.getAnnotation(WolfController.class).value();\n            }\n\n            \/\/\u5faa\u73af\u7c7b\u4e2d\u7684\u65b9\u6cd5\uff0c\u83b7\u53d6\u65b9\u6cd5\u4e0a\u7684\u8def\u5f84\n            Method[] methods = clazz.getMethods();\n            for (Method method : methods){\n                \/\/\u5047\u8bbe\u53ea\u6709WolfGetMapping\u8fd9\u4e00\u79cd\u6ce8\u89e3\n                if(!method.isAnnotationPresent(WolfGetMapping.class)){\n                    continue;\n                }\n                WolfGetMapping wolfGetMapping = method.getDeclaredAnnotation(WolfGetMapping.class);\n                requestUrl = requestUrl + "\/" + wolfGetMapping.value();\/\/\u62fc\u6210\u5b8c\u6210\u7684\u8bf7\u6c42\u8def\u5f84\n\n                \/\/\u4e0d\u8003\u8651\u6b63\u5219\u5339\u914d\u8def\u5f84\/xx\/* \u7684\u60c5\u51b5\uff0c\u53ea\u8003\u8651\u5b8c\u5168\u5339\u914d\u7684\u60c5\u51b5\n                if (handlerMappingMap.containsKey(requestUrl)){\n                    System.out.println("\u91cd\u590d\u8def\u5f84");\n                    continue;\n                }\n\n                Annotation[][] annotationArr = method.getParameterAnnotations();\/\/\u83b7\u53d6\u65b9\u6cd5\u4e2d\u53c2\u6570\u7684\u6ce8\u89e3\n\n                Map<Integer,String> methodParam = new HashMap<>();\/\/\u5b58\u50a8\u53c2\u6570\u7684\u987a\u5e8f\u548c\u53c2\u6570\u540d\n                retryParam:\n                for (int i=0;i<annotationArr.length;i++){\n                    for (Annotation annotation : annotationArr[i]){\n                        if (annotation instanceof WolfRequestParam){\n                            WolfRequestParam wolfRequestParam = (WolfRequestParam) annotation;\n                            methodParam.put(i,wolfRequestParam.value());\/\/\u5b58\u50a8\u53c2\u6570\u7684\u4f4d\u7f6e\u548c\u6ce8\u89e3\u4e2d\u5b9a\u4e49\u7684\u53c2\u6570\u540d\n                            continue retryParam;\n                        }\n                    }\n                }\n\n                requestUrl = this.formatUrl(requestUrl);\/\/\u4e3b\u8981\u662f\u9632\u6b62\u8def\u5f84\u591a\u4e86\/\u5bfc\u81f4\u8def\u5f84\u5339\u914d\u4e0d\u4e0a\n                HandlerMapping handlerMapping = new HandlerMapping();\n                handlerMapping.setRequestUrl(requestUrl);\/\/\u8bf7\u6c42\u8def\u5f84\n                handlerMapping.setMethod(method);\/\/\u8bf7\u6c42\u65b9\u6cd5\n                handlerMapping.setTarget(entry.getValue());\/\/\u8bf7\u6c42\u65b9\u6cd5\u6240\u5728controller\u5bf9\u8c61\n                handlerMapping.setMethodParams(methodParam);\/\/\u8bf7\u6c42\u65b9\u6cd5\u7684\u53c2\u6570\u4fe1\u606f\n                handlerMappingMap.put(requestUrl,handlerMapping);\/\/\u5b58\u5165hashmap\n            }\n        }\n    }\n\n    \/**\n     * \u521d\u59cb\u5316\u7c7b\uff0c\u5e76\u653e\u5165\u5bb9\u5668iocContainerMap\u5185\n     *\/\n    private void doInitializedClass() {\n        if (classNameList.isEmpty()){\n            return;\n        }\n        for (String className : classNameList){\n            if (StringUtils.isEmpty(className)){\n                continue;\n            }\n            Class clazz;\n            try {\n                clazz = Class.forName(className);\/\/\u53cd\u5c04\u83b7\u53d6\u5bf9\u8c61\n                if (clazz.isAnnotationPresent(WolfController.class)){\n                    String value = ((WolfController)clazz.getAnnotation(WolfController.class)).value();\n                    \/\/\u5982\u679c\u76f4\u63a5\u6307\u5b9a\u4e86value\u5219\u53d6value\uff0c\u5426\u5219\u53d6\u9996\u5b57\u6bcd\u5c0f\u5199\u7c7b\u540d\u4f5c\u4e3akey\u503c\u5b58\u50a8\u7c7b\u7684\u5b9e\u4f8b\u5bf9\u8c61\n                    iocContainerMap.put(StringUtils.isBlank(value) ? toLowerFirstLetterCase(clazz.getSimpleName()) : value,clazz.newInstance());\n                }else if(clazz.isAnnotationPresent(WolfService.class)){\n                    String value = ((WolfService)clazz.getAnnotation(WolfService.class)).value();\n                    iocContainerMap.put(StringUtils.isBlank(value) ? toLowerFirstLetterCase(clazz.getSimpleName()) : value,clazz.newInstance());\n                }else{\n                    System.out.println("\u4e0d\u8003\u8651\u5176\u4ed6\u6ce8\u89e3\u7684\u60c5\u51b5");\n                }\n            } catch (Exception e) {\n                e.printStackTrace();\n                System.out.println("\u521d\u59cb\u5316\u7c7b\u5931\u8d25\uff0cclassName\u4e3a" + className);\n            }\n        }\n\n    }\n\n    \/**\n     * \u5c06\u9996\u5b57\u6bcd\u8f6c\u6362\u4e3a\u5c0f\u5199\n     * @param className\n     * @return\n     *\/\n    private String toLowerFirstLetterCase(String className) {\n        if (StringUtils.isBlank(className)){\n            return "";\n        }\n        String firstLetter = className.substring(0,1);\n        return firstLetter.toLowerCase() + className.substring(1);\n    }\n\n    \/**\n     * \u626b\u63cf\u5305\u4e0b\u6240\u6709\u6587\u4ef6\u83b7\u53d6\u5168\u9650\u5b9a\u7c7b\u540d\n     * @param basePackages\n     *\/\n    private void doScanPacakge(String basePackages) {\n        if (StringUtils.isBlank(basePackages)){\n            return;\n        }\n        \/\/\u628a\u5305\u540d\u7684.\u66ff\u6362\u4e3a\/\n        String scanPath = "\/" + basePackages.replaceAll("\/\/.","\/");\n        URL url = this.getClass().getClassLoader().getResource(scanPath);\/\/\u83b7\u53d6\u5230\u5f53\u524d\u5305\u6240\u5728\u78c1\u76d8\u7684\u5168\u8def\u5f84\n        File files = new File(url.getFile());\/\/\u83b7\u53d6\u5f53\u524d\u8def\u5f84\u4e0b\u6240\u6709\u6587\u4ef6\n        for (File file : files.listFiles()){\/\/\u5f00\u59cb\u626b\u63cf\u8def\u5f84\u4e0b\u7684\u6240\u6709\u6587\u4ef6\n            if (file.isDirectory()){\/\/\u5982\u679c\u662f\u6587\u4ef6\u5939\u5219\u9012\u5f52\n                doScanPacakge(basePackages + "." + file.getName());\n            }else{\/\/\u5982\u679c\u662f\u6587\u4ef6\u5219\u6dfb\u52a0\u5230\u96c6\u5408\u3002\u56e0\u4e3a\u4e0a\u9762\u662f\u901a\u8fc7\u7c7b\u52a0\u8f7d\u5668\u83b7\u53d6\u5230\u7684\u6587\u4ef6\u8def\u5f84\uff0c\u6240\u4ee5\u5b9e\u9645\u4e0a\u662fclass\u6587\u4ef6\u6240\u5728\u8def\u5f84\n                classNameList.add(basePackages + "." + file.getName().replace(".class",""));\n            }\n        }\n\n    }\n\n    \/**\n     * \u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\n     * @param configPath - \u914d\u7f6e\u6587\u4ef6\u6240\u5728\u8def\u5f84\n     *\/\n    private void doLoadConfig(String configPath) {\n        InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream(configPath);\n        Properties properties = new Properties();\n        try {\n            properties.load(inputStream);\n        } catch (IOException e) {\n            e.printStackTrace();\n            System.out.println("\u52a0\u8f7d\u914d\u7f6e\u6587\u4ef6\u5931\u8d25");\n        }\n\n        properties.forEach((k, v) -> {\n            try {\n                Field field = myConfig.getClass().getDeclaredField((String)k);\n                field.setAccessible(true);\n                field.set(myConfig,v);\n            } catch (Exception e) {\n                e.printStackTrace();\n                System.out.println("\u521d\u59cb\u5316\u914d\u7f6e\u7c7b\u5931\u8d25");\n                return;\n            }\n        });\n    }\n}<\/code><\/pre>\n
5\u3001\u8fd9\u4e2a Servlet<\/code> \u76f8\u6bd4\u8f83\u4e8e\u4e0a\u9762\u7684 HelloServlet<\/code> \u591a\u4e86\u4e00\u4e2a init<\/code> \u65b9\u6cd5\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\u4e3b\u8981\u505a\u4e86\u4ee5\u4e0b\u51e0\u4ef6\u4e8b\u60c5\uff1a<\/p>\n
\uff081\uff09\u521d\u59cb\u5316\u914d\u7f6e\u6587\u4ef6\uff0c\u62ff\u5230\u914d\u7f6e\u6587\u4ef6\u4e2d\u914d\u7f6e\u7684\u53c2\u6570\u4fe1\u606f\uff08\u5bf9\u5e94\u65b9\u6cd5\uff1adoLoadConfig<\/code>\uff09\u3002<\/p>\n
\uff082\uff09\u62ff\u5230\u7b2c 1<\/code> \u6b65\u52a0\u8f7d\u51fa\u6765\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u83b7\u53d6\u5230\u9700\u8981\u626b\u63cf\u7684\u5305\u8def\u5f84\uff0c\u7136\u540e\u5c06\u5305\u8def\u5f84\u8fdb\u884c\u8f6c\u6362\u6210\u5b9e\u9645\u7684\u78c1\u76d8\u8def\u5f84\uff0c\u5e76\u5f00\u59cb\u904d\u5386\u78c1\u76d8\u8def\u5f84\u4e0b\u7684\u6240\u6709 class<\/code> \u6587\u4ef6\uff0c\u6700\u7ec8\u7ecf\u8fc7\u8f6c\u6362\u4e4b\u540e\u5f97\u5230\u626b\u63cf\u8def\u5f84\u4e0b\u7684\u6240\u6709\u7c7b\u7684\u5168\u9650\u5b9a\u7c7b\u578b\uff0c\u5b58\u50a8\u5230\u5168\u5c40\u53d8\u91cf classNameList<\/code> \u4e2d\uff08\u5bf9\u5e94\u65b9\u6cd5\uff1adoScanPacakge<\/code>\uff09\u3002<\/p>\n
\uff083\uff09\u6839\u636e\u7b2c 2<\/code> \u6b65\u4e2d\u5f97\u5230\u7684\u5168\u5c40\u53d8\u91cf classNameList<\/code> \u4e2d\u7684\u7c7b\u901a\u8fc7\u53cd\u5c04\u8fdb\u884c\u521d\u59cb\u5316\uff08\u9700\u8981\u6ce8\u610f\u7684\u662f\u53ea\u4f1a\u521d\u59cb\u5316\u52a0\u4e86\u6307\u5b9a\u6ce8\u89e3\u7684\u7c7b\uff09\u5e76\u5c06\u5f97\u5230\u7684\u5bf9\u5e94\u5173\u7cfb\u5b58\u50a8\u5230\u5168\u5c40\u53d8\u91cf iocContainerMap<\/code> \u4e2d\uff08\u5373\u4f20\u8bf4\u4e2d\u7684 IOC<\/code> \u5bb9\u5668\uff09\uff0c\u5176\u4e2d key<\/code> \u503c\u4e3a\u6ce8\u89e3\u4e2d\u7684 value<\/code> \u5c5e\u6027\uff0c\u5982 value<\/code> \u5c5e\u6027\u4e3a\u7a7a\uff0c\u5219\u9ed8\u8ba4\u53d6\u9996\u5b57\u6bcd\u5c0f\u5199\u7684\u7c7b\u540d\u4f5c\u4e3a key<\/code> \u503c\u8fdb\u884c\u5b58\u50a8\uff08\u5bf9\u5e94\u65b9\u6cd5\uff1adoInitializedClass<\/code>\uff09\u3002<\/p>\n
\uff084\uff09\u8fd9\u4e00\u6b65\u6bd4\u8f83\u5173\u952e\uff0c\u9700\u8981\u5bf9 IOC<\/code> \u5bb9\u5668\u4e2d\u7684\u6240\u6709\u7c7b\u7684\u5c5e\u6027\u8fdb\u884c\u8d4b\u503c\u5e76\u4e14\u9700\u8981\u5bf9 Controller<\/code> \u4e2d\u7684\u8bf7\u6c42\u8def\u5f84\u8fdb\u884c\u6620\u5c04\u5b58\u50a8\uff0c\u4e3a\u4e86\u786e\u4fdd\u6700\u540e\u80fd\u987a\u5229\u8c03\u7528 Controller<\/code> \u4e2d\u7684\u65b9\u6cd5\uff0c\u8fd8\u9700\u8981\u5c06\u65b9\u6cd5\u7684\u53c2\u6570\u8fdb\u884c\u5b58\u50a8 \u3002\u5bf9\u5c5e\u6027\u8fdb\u884c\u6620\u5c04\u65f6\u53ea\u4f1a\u5bf9\u52a0\u4e86\u6ce8\u89e3\u7684\u5c5e\u6027\u8fdb\u884c\u6620\u5c04\uff0c\u6620\u5c04\u65f6\u4f1a\u4ece IOC<\/code> \u5bb9\u5668\u4e2d\u53d6\u51fa\u7b2c 3<\/code> \u6b65\u4e2d\u5df2\u7ecf\u521d\u59cb\u5316\u7684\u5b9e\u4f8b\u5bf9\u8c61\u8fdb\u884c\u8d4b\u503c\uff0c\u6700\u540e\u5c06\u8bf7\u6c42\u8def\u5f84\u548c Controller<\/code> \u4e2d\u65b9\u6cd5\u7684\u6620\u5c04\u5173\u7cfb\u5b58\u5165\u53d8\u91cf handlerMappingMap<\/code>\uff0ckey<\/code> \u503c\u4e3a\u8bf7\u6c42\u8def\u5f84\uff0cvalue<\/code> \u4e3a\u65b9\u6cd5\u7684\u76f8\u5173\u4fe1\u606f \uff08\u5bf9\u5e94\u65b9\u6cd5\uff1adoDependencyInjection<\/code>\uff09\u3002<\/p>\n
6\u3001\u5b58\u50a8\u8bf7\u6c42\u8def\u5f84\u548c\u65b9\u6cd5\u7684\u6620\u5c04\u5173\u7cfb\u65f6\uff0c\u9700\u8981\u7528\u5230 HandlerMapping<\/code> \u7c7b\u6765\u8fdb\u884c\u5b58\u50a8\uff1a<\/p>\n
package com.lonely.wolf.mini.spring.v1;\n\nimport java.lang.reflect.Method;\nimport java.util.Map;\n\n\/\/\u7701\u7565\u4e86getter\/setter\u65b9\u6cd5\npublic class HandlerMapping {\n    private String requestUrl;\n    private Object target;\/\/\u4fdd\u5b58\u65b9\u6cd5\u5bf9\u5e94\u7684\u5b9e\u4f8b\n    private Method method;\/\/\u4fdd\u5b58\u6620\u5c04\u7684\u65b9\u6cd5\n    private Map<Integer,String> methodParams;\/\/\u8bb0\u5f55\u65b9\u6cd5\u53c2\u6570\n}<\/code><\/pre>\n
7\u3001\u521d\u59cb\u5316\u5b8c\u6210\u4e4b\u540e\uff0c\u56e0\u4e3a\u62e6\u622a\u4e86 \/*<\/code> \uff0c\u6240\u4ee5\u8c03\u7528\u4efb\u610f\u63a5\u53e3\u90fd\u4f1a\u8fdb\u5165 MyDispatcherServlet<\/code> \uff0c\u800c\u4e14\u6700\u7ec8\u90fd\u4f1a\u6267\u884c\u65b9\u6cd5 doDispatch<\/code>\uff0c\u6267\u884c\u8fd9\u4e2a\u65b9\u6cd5\u65f6\u4f1a\u62ff\u5230\u8bf7\u6c42\u7684\u8def\u5f84\uff0c\u7136\u540e\u548c\u5168\u5c40\u53d8\u91cf handlerMappingMap<\/code> \u8fdb\u884c\u5339\u914d\uff0c\u5339\u914d\u4e0d\u4e0a\u5219\u8fd4\u56de 404<\/code>\uff0c\u5339\u914d\u7684\u4e0a\u5219\u53d6\u51fa\u5fc5\u8981\u7684\u53c2\u6570\u8fdb\u884c\u8d4b\u503c\uff0c\u6700\u540e\u901a\u8fc7\u53cd\u5c04\u8c03\u7528\u5230 Controller<\/code> \u4e2d\u7684\u76f8\u5173\u65b9\u6cd5\u3002<\/p>\n
8\u3001\u65b0\u5efa\u4e00\u4e2a HelloController<\/code> \u548c HelloService<\/code> \u6765\u8fdb\u884c\u6d4b\u8bd5\uff1a<\/p>\n
package com.lonely.wolf.mini.spring.controller;\n\nimport com.lonely.wolf.mini.spring.annotation.WolfAutowired;\nimport com.lonely.wolf.mini.spring.annotation.WolfController;\nimport com.lonely.wolf.mini.spring.annotation.WolfGetMapping;\nimport com.lonely.wolf.mini.spring.annotation.WolfRequestParam;\nimport com.lonely.wolf.mini.spring.service.HelloService;\n\nimport javax.servlet.http.HttpServletRequest;\nimport javax.servlet.http.HttpServletResponse;\nimport java.io.IOException;\n\n@WolfController\npublic class HelloController {\n    @WolfAutowired\n    private HelloService helloService;\n\n    @WolfGetMapping("\/hello")\n    public void query(HttpServletRequest request,HttpServletResponse response, @WolfRequestParam("name") String name) throws IOException {\n        response.setContentType("text\/html;charset=utf-8");\n        response.getWriter().write("Hello\uff1a" + name);\n    }\n}\npackage com.lonely.wolf.mini.spring.service;\n\nimport com.lonely.wolf.mini.spring.annotation.WolfService;\n\n@WolfService(value = "hello_service")\/\/\u4e3a\u4e86\u6f14\u793a\u80fd\u5426\u6b63\u5e38\u53d6value\u5c5e\u6027\npublic class HelloService {\n}<\/code><\/pre>\n
9\u3001\u8f93\u5165\u6d4b\u8bd5\u8def\u5f84\uff1ahttp:\/\/localhost:8080\/\/\/\/hello?name=\u53cc\u5b50\u5b64\u72fc<\/code>\uff0c \u8fdb\u884c\u6d4b\u8bd5\u53d1\u73b0\u53ef\u4ee5\u6b63\u5e38\u8f93\u51fa\uff1aHello\uff1a\u53cc\u5b50\u5b64\u72fc<\/code>\u3002<\/p>\n
\u4e0a\u9762\u8fd9\u4e2a\u4f8b\u5b50\u53ea\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u6f14\u793a\uff0c\u901a\u8fc7\u8fd9\u4e2a\u4f8b\u5b50\u53ea\u662f\u5e0c\u671b\u5728\u6ca1\u6709\u4efb\u4f55\u6846\u67b6\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u4e5f\u80fd\u77e5\u9053\u5982\u4f55\u5b8c\u6210\u4e00\u4e2a\u7b80\u5355\u7684\u5e94\u7528\u5f00\u53d1\u3002\u4f8b\u5b50\u4e2d\u5f88\u591a\u7ec6\u8282\u90fd\u6ca1\u6709\u8fdb\u884c\u5904\u7406\uff0c\u4ec5\u4ec5\u53ea\u662f\u4e3a\u4e86\u4f53\u9a8c\u4e00\u4e0b Spring<\/code> \u7684\u6838\u5fc3\u601d\u60f3\uff0c\u5e76\u4e86\u89e3 Spring<\/code> \u5230\u5e95\u5e2e\u52a9\u6211\u4eec\u505a\u4e86\u4ec0\u4e48\uff0c\u5b9e\u9645\u4e0a Spring<\/code> \u80fd\u5e2e\u6211\u4eec\u505a\u7684\u4e8b\u60c5\u8fdc\u6bd4\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u591a\u5f97\u591a\uff0cSpring<\/code> \u4f53\u7cfb\u5e9e\u5927\uff0c\u8bbe\u8ba1\u4f18\u96c5\uff0c\u7ecf\u8fc7\u4e86\u591a\u5e74\u7684\u8fed\u4ee3\u4f18\u5316\uff0c\u662f\u4e00\u6b3e\u975e\u5e38\u503c\u5f97\u7814\u7a76\u7684\u6846\u67b6\u3002<\/p>\n
\u8fd1\u671f\u70ed\u6587\u63a8\u8350\uff1a<\/strong><\/p>\n
1.1,000+ \u9053 Java\u9762\u8bd5\u9898\u53ca\u7b54\u6848\u6574\u7406(2022\u6700\u65b0\u7248)<\/a><\/p>\n
2.\u52b2\u7206\uff01Java \u534f\u7a0b\u8981\u6765\u4e86\u3002\u3002\u3002<\/a><\/p>\n
3.Spring Boot 2.x \u6559\u7a0b\uff0c\u592a\u5168\u4e86\uff01<\/a><\/p>\n
4.\u522b\u518d\u5199\u6ee1\u5c4f\u7684\u7206\u7206\u7206\u70b8\u7c7b\u4e86\uff0c\u8bd5\u8bd5\u88c5\u9970\u5668\u6a21\u5f0f\uff0c\u8fd9\u624d\u662f\u4f18\u96c5\u7684\u65b9\u5f0f\uff01\uff01<\/a><\/p>\n
5.\u300aJava\u5f00\u53d1\u624b\u518c\uff08\u5d69\u5c71\u7248\uff09\u300b\u6700\u65b0\u53d1\u5e03\uff0c\u901f\u901f\u4e0b\u8f7d\uff01<\/a><\/p>\n
\u89c9\u5f97\u4e0d\u9519\uff0c\u522b\u5fd8\u4e86\u968f\u624b\u70b9\u8d5e+\u8f6c\u53d1\u54e6\uff01<\/p>\n
https:\/\/segmentfault.com\/a\/1190000042443081<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6765\u6e90\uff1acnblogs.com\/lonely-wolf\/p\/14127957.html \u968f\u7740 Spring \u7684\u5d1b […]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006437","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006437","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006437"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006437\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}