本文介绍简单的SpringMVC的demo
步骤一：添加框架jar包
在myesclipse上创建Web project，并添加相应jar包，如图：
步骤二：在web.xml配置DispatcherServlet
DispatcherServlet为SpringMVC的前端控制器，它负责接收请求并将请求分发到对应的控制器：
<?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" 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">
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<!-- 配置springMVC配置文件的名称和位置，若不设置本节点,
则会使用默认配置文件/WEB-INF/<servlet-name>-servlet.xml -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:config/springmvc-servlet.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>
</web-app>步骤三：利用注解创建控制器
package test.handlers;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/*
*
*/
@Controller
public class HelloController {
/**
* 1. 使用 @RequestMapping 注解来映射请求的URL
* 2. 返回视图会通过视图解析器解析为实际的物理视图，对于 InternalResourceViewResolver 视图解析器， 会做如下解析
* 通过 prefix + returnVal + suffix 这样的方式得到实际的物理视图，然后做转发操作
* 如本例中的: WEB-INF/view/success.jsp
* @return
*/
@RequestMapping("/helloworld")
public String hello(){
System.out.print("hello!");
return "success";
}
}
步骤四：创建要跳转的页面
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'success.jsp' starting page</title>
</head>
<body>
Hello World <br>
</body>
</html>
步骤五：创建springmvc-servlet.xml，并设置自动扫描包及视图解析器
<?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"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="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-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 配置自动扫描的包 -->
<context:component-scan base-package="test"></context:component-scan>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="WEB-INF/view/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
