spring mvc简介

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

<web-app xmlns:xsi="www.w3/2001/XMLSchema-instance"

    xmlns="java.sun/xml/ns/javaee"

    xsi:schemaLocation="java.sun/xml/ns/javaee java.sun/xml/ns/javaee/web-app_3_0.xsd"

    id="WebApp_ID" version="3.0">

    <display-name>HelloSpringMVC</display-name>

    <welcome-file-list>

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

    </welcome-file-list>

    <!-- 配置spring mvc 的核心servlet -->

    <servlet>

       <servlet-name>spring</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

       <init-param>

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

           <!-- 指定spring mvc 配置文件的路径 默认为 /WEB-INF/<[servlet-name]-servlet.xml> 例如此处为/WEB-INF/spring-servlet.xml

              下面配置的也就是默认值 -->

           <param-value>/WEB-INF/spring-servlet.xml</param-value>

       </init-param>

       <!-- 配置随服务器启动自动初始化 -->

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

    </servlet>

    <servlet-mapping>

       <servlet-name>spring</servlet-name>

       <!-- 过滤所有后缀名为.do的请求 -->

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

    </servlet-mapping>

</web-app>

package com.morris.controller;

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 HelloController implements Controller {

       public ModelAndView handleRequest(HttpServletRequest arg0,

                     HttpServletResponse arg1) throws Exception {

              ModelAndView mav = new ModelAndView("hello.jsp");        

              mav.addObject("message", "Hello World");       

              return mav;

       }     

}

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

<beans xmlns="www.springframework/schema/beans"

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

    xmlns:mvc="www.springframework/schema/mvc"xmlns:context="www.springframework/schema/context"

    xmlns:util="www.springframework/schema/util"

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

                www.springframework/schema/context www.springframework/schema/context/spring-context-3.0.xsd 

                www.springframework/schema/mvc www.springframework/schema/mvc/spring-mvc-3.0.xsd 

                www.springframework/schema/util www.springframework/schema/util/spring-util-3.0.xsd">

    <bean id="simpleUrlHandlerMapping"

       class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">

       <property name="mappings">

           <props>

              <prop key="/hello.do">helloControl</prop>

              <!-- 说明：hello.do的请求将给名为helloControl的bean进行处理。 -->

           </props>

       </property>

    </bean>

    <bean id="helloControl"class="com.morris.controller.HelloController"></bean>

</beans>