引入 springMVC

springMvc/src/main/java/com/controller/UserController.java

@@ -0,0 +1,13 @@
+package com.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class UserController {
+    @RequestMapping("/quick")
+    public String save() {
+        System.out.println("userControllerRunning1...");
+        return "success.jsp";
+    }
+}

springMvc/src/main/java/com/listener/ContextLoadListener.java

@@ -1,25 +1,26 @@
 package com.listener;
 
 import com.config.SpringConfig;
+import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
 
 import javax.servlet.ServletContext;
 import javax.servlet.ServletContextEvent;
 import javax.servlet.ServletContextListener;
 
 public class ContextLoadListener implements ServletContextListener {
+    @Override
     public void contextInitialized(ServletContextEvent sce) {
 //        ServletContextListener.super.contextInitialized(sce);
         ServletContext servletContext = sce.getServletContext();
         // 获取web.xml中默认设置参数
-        String initParameter = servletContext.getInitParameter("testName");
-        System.out.println(initParameter);
-        AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext(SpringConfig.class);
-        servletContext.setAttribute("app",annotationConfigApplicationContext);
+        String contextPath = servletContext.getInitParameter("contextConfigLocation");
+        ApplicationContext applicationContext = new ClassPathXmlApplicationContext(contextPath);
+        servletContext.setAttribute("app",applicationContext);
         System.out.println("servletContextLoader");
     }
-
+    @Override
     public void contextDestroyed(ServletContextEvent sce) {
-//        ServletContextListener.super.contextDestroyed(sce);
     }
 }

springMvc/src/main/java/com/listener/WebApplicationContextUtils.java

@@ -0,0 +1,11 @@
+package com.listener;
+
+import org.springframework.context.ApplicationContext;
+
+import javax.servlet.ServletContext;
+
+public class WebApplicationContextUtils {
+    public static ApplicationContext getWebApplicationContext(ServletContext servletContext) {
+        return (ApplicationContext) servletContext.getAttribute("app");
+    }
+}

springMvc/src/main/java/com/web/UserServlet.java

@@ -4,6 +4,8 @@ import com.config.SpringConfig;
 import com.service.UserService;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.context.support.WebApplicationContextUtils;
 
 import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
@@ -18,8 +20,10 @@ public class UserServlet extends HttpServlet {
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
         //super.doGet(req, resp);
         ServletContext servletContext = req.getServletContext();
-        ApplicationContext app = (ApplicationContext)servletContext.getAttribute("app");
-        UserService bean = app.getBean(UserService.class);
+//        ApplicationContext app = (ApplicationContext)servletContext.getAttribute("app");
+//        ApplicationContext webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
+        WebApplicationContext webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
+        UserService bean = webApplicationContext.getBean(UserService.class);
         bean.saveUser();
         // Hello
         PrintWriter out = resp.getWriter();

springMvc/src/main/resources/Spring-mvc.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
+<!--    controller组件扫描-->
+    <context:component-scan base-package="com.controller"></context:component-scan>
+</beans>

springMvc/src/main/webapp/WEB-INF/web.xml

@@ -26,11 +26,27 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
   <listener>
-    <listener-class>com.listener.ContextLoadListener</listener-class>
+<!--    <listener-class>com.listener.ContextLoadListener</listener-class>-->
+    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
   </listener>
+<!--  配置SpringMVC前端控制器-->
+  <servlet>
+    <servlet-name>dispatcherServlet</servlet-name>
+    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
+    <init-param>
+      <param-name>contextConfigLocation</param-name>
+      <param-value>classpath:Spring-mvc.xml</param-value>
+    </init-param>
+    <load-on-startup>1</load-on-startup>
+  </servlet>
+  <servlet-mapping>
+    <servlet-name>dispatcherServlet</servlet-name>
+    <url-pattern>/</url-pattern>
+  </servlet-mapping>
+<!--  全局初始化参数-->
   <context-param>
-    <param-name>testName</param-name>
-    <param-value>test1</param-value>
+    <param-name>contextConfigLocation</param-name>
+    <param-value>classpath:context.xml</param-value>
   </context-param>
 
   <!-- Servlet Filters ================================================ -->
@@ -43,6 +59,5 @@
     <servlet-name>User</servlet-name>
     <url-pattern>/user</url-pattern>
   </servlet-mapping>
-
 </web-app>
         

springMvc/src/main/webapp/success.jsp

@@ -0,0 +1,16 @@
+<%--
+  Created by IntelliJ IDEA.
+  User: 77179
+  Date: 2022/5/11
+  Time: 21:06
+  To change this template use File | Settings | File Templates.
+--%>
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>Title</title>
+</head>
+<body>
+    <h1>success!!!</h1>
+</body>
+</html>