springmvcdemo2

首先去Spring官网上去下载最新的Spring版本。http://www.springsource.com/download/community

目前最新的版本是3.1 M2。下载完后解压，将dist目录下的所有jar文件复制到你的项目的lib目录下（我在MyEclipse中新建了一个myapp的Web项目），另外再添加如下的JAR包，
commons-fileupload-1.2.1.jar

commons-logging-1.1.1.jar

在web. xml中添加：

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>
 org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>
 org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<filter>
<filter-name>Encoding</filter-name>
<filter-class>
 org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

另外在WEB-INF下新建applicationContext.xml

<?xmlversion="1.0"encoding="UTF-8"?>

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

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

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

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-3.0.xsd

 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd

 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">



<context:annotation-config/>

<context:component-scanbase-package="org.app.demo.spring"/><!-- 自动扫描所有注解该路径 -->

</beans>

在WEB-INF下新建spring-servlet.xml

<?xmlversion="1.0"encoding="UTF-8"?>

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

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

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

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">



<context:annotation-config/>

<!-- 把标记了@Controller注解的类转换为bean -->

<context:component-scanbase-package="org.app.demo.spring.controller"/>

<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->

<beanclass="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>



<!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->

<beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"

p:prefix="/WEB-INF/views/"p:suffix=".jsp"/>



<beanid="multipartResolver"

class="org.springframework.web.multipart.commons.CommonsMultipartResolver"

p:defaultEncoding="utf-8"/>

</beans>

在源目录下新建三个包

org.app.demo.spring.controller

org.app.demo.spring.service

org.app.demo.spring.service.impl

在controller包下建HelloWorldController类

package org.app.demo.spring.controller;



import javax.servlet.http.HttpServletRequest;

import org.app.demo.spring.service.HelloWorldService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;

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

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



@Controller

@RequestMapping("/helloworld.do")

publicclass HelloWorldController{



@Autowired

private HelloWorldService helloWorldService;



@RequestMapping

public String getNewName(@RequestParam("userName") String userName, HttpServletRequest request){

 String newUserName = helloWorldService.getNewName(userName);

 request.setAttribute("newUserName", newUserName);

return"helloworld";

 }

}

在service包下新建HelloWorldService接口

package org.app.demo.spring.service;

publicinterface HelloWorldService {

public String getNewName(String userName);

}

在impl包下新建HelloWorldService接口的实现类HelloWorldServiceImpl类
package org.app.demo.spring.service.impl;

import org.app.demo.spring.service.HelloWorldService;

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Transactional;

@Service

publicclass HelloWorldServiceImpl implements HelloWorldService {

@Override

@Transactional

public String getNewName(String userName) {

return"Hello Spring!" + userName;

 }

}

新建index.jsp

<%@ 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>Insert title here</title>

<link rel="stylesheet" type="text/css" href="http://wjjcml1982.blog.163.com/blog/css/db_browser.css">

</head>

<body>

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

请输入姓名：<input type="text" name="userName" />

<input type="submit" value="提交" />

<br />

</form>

</body>

</html>

然后再WEB-INF目录下新建views目录，在views目录下新建helloworld.jsp

<%@ 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>

<metahttp-equiv="Content-Type"content="text/html; charset=UTF-8">

<title>Insert title here</title>

<linkrel="stylesheet"type="text/css"href="http://wjjcml1982.blog.163.com/blog/css/db_browser.css">

</head>

<body>

<h1><%=request.getAttribute("newUserName")%></h1>

</body>

</html>

保存完后布置到Tomcat中，启动Tomcat,访问http://localhost:8080/myapp/index.jsp

输入姓名（如张三）后,页面会跳转到http://localhost:8080/myapp/helloworld.do。
显示Hello Spring！张三。一切OK!