1、第一个SpringMVC程序

1、创建如下项目结构

2、在src下的com.springmvc下创建User.java

 package com.springmvc;

 public class User {

     private String uname;

     public String getUname() {

         return uname;

     }

     public void setUname(String uname) {

         this.uname = uname;

     }

     @Override

     public String toString() {

         return "User [uname=" + uname + "]";

     }

 }

User.java

3、在src下的com.springmvc下创建MVCController.java

 package com.springmvc;

 import java.io.IOException;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.springframework.stereotype.Controller;

 import org.springframework.web.bind.annotation.RequestMapping;

 /**

  * @Controller 标注控制类，负责注册一个bean到spring上下文中

  * @RequestMapping 注解为控制器指定可以处理哪些 URL 请求

  * http://MVCController/hello

  *

  */

 @Controller

 public class MVCController {

     /*所有方法的return 返回的是页面视图的名称*/

     //1.自动匹配参数

     @RequestMapping("/hello.do")

     public String hello(HttpServletRequest request,HttpServletResponse response) throws IOException{

         //跳转页面

         return "/index.jsp";

     }

     //2.自动匹配参数,传递一个参数

     @RequestMapping("/login.do")

     public void login(HttpServletResponse response,String uname) throws IOException{

         //login的页面，uname是表单的name属性名

         System.out.println("登录通过String参数接用户名:"+uname);

         //跳转方式1：

             response.sendRedirect("index.jsp");

     }

     //2.自动匹配参数

     @RequestMapping("/register.do")

     public void test(HttpServletResponse response,User user) throws IOException{

         //register页面的name属性名只要和User类的属性名保持一致，这里参数拿对象接就好，

         //这里register页面的name属性名中不用写user.属性名，不能像stuts2注入对象一样

         System.out.println("登录通过User对象参数接用户名:"+user);

         //跳转方式1：

         response.sendRedirect("index.jsp");

     }

 }

MVCController.java

4、在WebRoot下的WEB-INF下创建springmvc-servlet.xml

 <?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

 xmlns:aop="http://www.springframework.org/schema/aop"

 xmlns:context="http://www.springframework.org/schema/context"

 xmlns:tx="http://www.springframework.org/schema/tx"

 xmlns:mvc="http://www.springframework.org/schema/mvc"

 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

 xsi:schemaLocation="http://www.springframework.org/schema/beans

 http://www.springframework.org/schema/beans/spring-beans.xsd

 http://www.springframework.org/schema/aop

 http://www.springframework.org/schema/aop/spring-aop.xsd

 http://www.springframework.org/schema/context

 http://www.springframework.org/schema/context/spring-context.xsd

 http://www.springframework.org/schema/tx

 http://www.springframework.org/schema/tx/spring-tx.xsd

 http://www.springframework.org/schema/mvc

 http://www.springframework.org/schema/mvc/spring-mvc.xsd ">

   <!--  1.配置要自动扫描的包 -->

   <context:component-scan base-package="com.springmvc"/>

   <!-- 2.支持spingmmvc注解,自动匹配 -->

   <mvc:annotation-driven/>

   <!-- 3.如果当前请求为“/”时，则转发到“mvc/hello” 也就是默认首启项的设置,web.xml欢迎页面节点可以啥也不写-->

   <!-- <mvc:view-controller path="/" view-name="forward:/mvc/hello"/> -->

 </beans>

springmvc-servlet.xml

5、编辑WebRoot下的WEB-INF下的web.xml

 <?xml version="1.0" encoding="UTF-8"?>

 <web-app version="2.5"

     xmlns="http://java.sun.com/xml/ns/javaee"

     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

     http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

     <!-- SpringMVC的配置 -->

     <servlet>

       <servlet-name>springmvc</servlet-name>

       <!-- DispatcherServlet是前置控制器，配置在web.xml文件中的。拦截匹配的请求，

       Servlet拦截匹配规则要自已定义，把拦截下来的请求，依据相应的规则分发到目标Controller来处理， -->

       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

     </servlet>

     <servlet-mapping>

       <servlet-name>springmvc</servlet-name>

       <url-pattern>*.do</url-pattern>

     </servlet-mapping>

     <welcome-file-list>

       <welcome-file></welcome-file>

     </welcome-file-list>

 </web-app>

web.xml

6、在WebRoot下创建login.jsp

 <%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

 <%

 String path = request.getContextPath();

 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

 %>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

 <html>

   <head>

     <base href="<%=basePath%>">

     <title>My JSP 'index.jsp' starting page</title>

     <meta http-equiv="pragma" content="no-cache">

     <meta http-equiv="cache-control" content="no-cache">

     <meta http-equiv="expires" content="0">

     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

     <meta http-equiv="description" content="This is my page">

     <!--

     <link rel="stylesheet" type="text/css" href="styles.css">

     -->

   </head>

   <body>

      <form action="login.do" method="post">

        user:<input type="text" name="uname"/>

        <input type="submit" value="ok"/>

      </form>

   </body>

 </html>

7、在WebRoot下创建register.jsp

 <%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

 <%

 String path = request.getContextPath();

 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

 %>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

 <html>

   <head>

     <base href="<%=basePath%>">

     <title>My JSP 'index.jsp' starting page</title>

     <meta http-equiv="pragma" content="no-cache">

     <meta http-equiv="cache-control" content="no-cache">

     <meta http-equiv="expires" content="0">

     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

     <meta http-equiv="description" content="This is my page">

     <!--

     <link rel="stylesheet" type="text/css" href="styles.css">

     -->

   </head>

   <body>

      <form action="register.do" method="post">

        user:<input type="text" name="uname"/>

        <input type="submit" value="ok"/>

      </form>

   </body>

 </html>

8、在WebRoot下创建index.jsp

 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

 <%

 String path = request.getContextPath();

 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

 %>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

 <html>

   <head>

     <base href="<%=basePath%>">

     <title>My JSP 'login.jsp' starting page</title>

     <meta http-equiv="pragma" content="no-cache">

     <meta http-equiv="cache-control" content="no-cache">

     <meta http-equiv="expires" content="0">

     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

     <meta http-equiv="description" content="This is my page">

     <!--

     <link rel="stylesheet" type="text/css" href="styles.css">

     -->

   </head>

   <body>

      操作成功！

   </body>

 </html>

index.jsp

9、运行效果如下

(1)直接通过浏览器访问hello.do

(2)登录时，后台用String参数名接值

(3)注册时，后台用User对象参数接值

巴特西

1、第一个SpringMVC程序

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