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

<web-app version="3.0"

    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_3_0.xsd">

  <display-name></display-name>

  <welcome-file-list>

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

  </welcome-file-list>

   <!--1.配置springMVC前端控制器(是总的控制中心  被拦截的url会汇聚到该servlet) -->

    <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:springmvc-servlet.xml</param-value>

      </init-param>

        <load-on-startup>1</load-on-startup>  <!-- tomcat启动后立即加载 -->

   </servlet>  

      <!--配置Spring -->

      <context-param>

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

        <param-value>classpath:springmvc-servlet.xml</param-value>

      </context-param>

    <!--2. 配置spring拦截的url模板  以.do结尾的url-->

    <servlet-mapping>

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

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

    </servlet-mapping>  

    <!--3. 注册配置文件读取器，监听spring配置文件的变化 -->

    <listener>

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

    </listener>   

  <!-- 指定spring配置文件位置 -->

  <context-param>

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

  <param-value>classpath:springmvc-servlet.xml</param-value>

  </context-param>

    <!--5. 编码字符集统一为UTF-8（过滤器） -->

    <filter>

        <display-name>encodingFilter</display-name>

        <filter-name>encodingFilter</filter-name>

        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <init-param>

            <param-name>encoding</param-name>

            <param-value>UTF-8</param-value>

        </init-param>

    </filter>  

</web-app>

package wym.controler;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;

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

public class FirstSpringMvc implements Controller

{

    @Override

    public ModelAndView handleRequest(HttpServletRequest arg0,

            HttpServletResponse arg1) throws Exception {

        // TODO Auto-generated method stub

        ModelAndView mv=new ModelAndView();

        mv.addObject("msg","你好。。 springmvc");///WEB-INF/jsp/hello.jsp

        mv.setViewName("hellow");

        return mv;

    }

}