spring hello 基础案例 报错（No mapping found for HTTP request with URI [/hello] ）

<?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">

    <!--配置监听器 -->

    <context-param>              

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath*:spring/applicationContext.xml</param-value>  

    </context-param>

    <listener>          

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

     

     

	<!-- Spring view分发器 -->

	<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*:spring/springMVC</param-value>

		</init-param>

		<load-on-startup>1</load-on-startup>

	</servlet>

	<servlet-mapping>

		<servlet-name>springMVC</servlet-name>

		<url-pattern>/</url-pattern>

	</servlet-mapping>

	

	<welcome-file-list>

		<welcome-file>index.html</welcome-file>

		<welcome-file>index.htm</welcome-file>

		<welcome-file>index.jsp</welcome-file>

		<welcome-file>default.html</welcome-file>

		<welcome-file>default.htm</welcome-file>

		<welcome-file>default.jsp</welcome-file>

	</welcome-file-list>



</web-app>

<?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:tx="http://www.springframework.org/schema/tx"

	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-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

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

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



    <!-- 处理器 -->          

    <bean name="/hello" class="com.exercise.cn.action.HelloAction"/>  

    

    

    <!-- ViewResolver  视图解析器                org.springframework.web.servlet.view.InternalResourceViewResolver-->

    <bean id="viewResoler" class="org.springframework.web.servlet.view.InternalResourceViewResolver">   

        <property name="prefix" value="/WEB-INF/jsp/"/>  

        <property name="suffix" value=".jsp"/>  

    </bean>  

</beans> 

package com.exercise.cn.action;





import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;



import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.mvc.Controller;



import com.exercise.cn.entity.User;

import com.exercise.cn.biz.impl.IuserBiz;



public class HelloAction implements Controller{

	

	@Override

	public ModelAndView handleRequest(HttpServletRequest arg0,

			HttpServletResponse arg1) throws Exception {

		   //1、收集参数、验证参数  

	       //2、绑定参数到命令对象  

	       //3、将命令对象传入业务对象进行业务处理  

	       //4、选择下一个页面  

	       ModelAndView mv = new ModelAndView();  

	       //添加模型数据 可以是任意的POJO对象  

	       mv.addObject("message", "Hello World!");  

	       //设置逻辑视图名，视图解析器会根据该名字解析到具体的视图页面  

	       mv.setViewName("hello");  

	       System.out.println("hello");

	       return mv;  

	}

	

	public static void main(String[] args) {

		ApplicationContext ctx = new ClassPathXmlApplicationContext("spring/applicationContext.xml");

		IuserBiz b = (IuserBiz) ctx.getBean("userBiz");

		User user = new User();

		b.save(user);

	}



}