Spring MVC

1. 创建一个WEB项目，项目名称为 “springMVC” 

2. 导入jar包如下：

注意：一定是手动粘贴到 lib 文件夹下，否则启动时会找不到相应的 jar 包。

3. 配置web.xml 文件如下：

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">  <display-name>springMVC</display-name>  <welcome-file-list>    <welcome-file>home.jsp</welcome-file>  </welcome-file-list>    <!-- 监听spring上下文容器 -->  <listener>  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>    <!-- 加载spring的xml配置文件到 spring的上下文容器中 -->    <context-param>  <param-name>contextConfigLocation</param-name>  <param-value>classpath:applicationContext.xml</param-value>  </context-param>    <servlet>  <servlet-name>springMVC</servlet-name>  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  <init-param>  <param-name>contextConfigLocation</param-name>  <param-value>classpath:mvc-context.xml</param-value>  </init-param>  <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>  <servlet-name>springMVC</servlet-name>  <url-pattern>*.do</url-pattern>  </servlet-mapping></web-app>

4. 创建 mvc-context.xml

4. 创建 mvc-context.xml

<pre name="code" class="html"><?xml version="1.0" encoding="UTF-8"?><beans:beans xmlns="http://www.springframework.org/schema/mvc"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd                  http://www.springframework.org/schema/aop                  http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"><!-- SpringMVC配置 --><!-- 通过component-scan 让Spring扫描org.swinglife.controller下的所有的类，让Spring的代码注解生效 --><context:component-scan base-package="com.zobobo.controller"></context:component-scan><!-- 配置SpringMVC的视图渲染器， 让其前缀为:/ 后缀为.jsp 将视图渲染到/page/<method返回值>.jsp中 --><beans:beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"p:prefix="/page/" p:suffix=".jsp"></beans:bean><!-- 或者下面的方式<beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/hello/" /><property name="suffix" value=".jsp" /></bean> --></beans:beans>

5. 创建 applicationContext.xml 如下：

<pre name="code" class="html"><?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:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"xmlns:cache="http://www.springframework.org/schema/cache"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/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd"></beans>

6. 创建 类 UserController.java 如下：

<pre name="code" class="java">package com.zobobo.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.servlet.ModelAndView;@Controller@RequestMapping(value="/page")public class UserController {/***      * 用户登陆      * <p>注解配置，只允许POST提交到该方法      * @param username      * @param password      * @return      */      @RequestMapping(value="login",method=RequestMethod.POST)      public ModelAndView login(String username,String password){          //验证传递过来的参数是否正确，否则返回到登陆页面。          if(this.checkParams(new String[]{username,password})){              //指定要返回的页面为succ.jsp              ModelAndView mav = new ModelAndView("succ");              //将参数返回给页面              mav.addObject("username",username);              mav.addObject("password", password);              return mav;          }          return new ModelAndView("home");      }            /***      * 验证参数是否为空      * @param params      * @return      */      private boolean checkParams(String[] params){          for(String param:params){              if(param==""||param==null||param.isEmpty()){                  return false;              }          }          return true;      }}

7. 创建 home.jsp 如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset==UTF-8"><title>home</title></head><body><form action="page/login.do" method="post">      username:<input type="text" name="username" />      <p>      password:<input type="password" name="password"/>      <p>      <input type="submit" value="submit" />  </form> </body></html>

8. 创建 succ.jsp 如下：

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset==UTF-8"><title>home</title></head><body><h2>登陆</h2>username:${username }<p>password:${password }</body></html>

9. 所有文件创建完成， 好累， 包结构如下：

10. 启动tomcat , 访问路径：http://localhost:8080/springMVC/ ，会看到如下界面，OK，你成功了！

11. 输入用户名和密码，submit 

12. 哈哈，恭喜你学到了新东西

如有不对的地方，请指出，谢谢！