SpringMvc入门教程

1.新建demo4 web项目，导入spring包（使用的是spring4.2）

2.修改WEB-INF下的WEB.XML内容为

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

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"

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

    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <servlet>

     <servlet-name>dispatch</servlet-name>

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

     <init-param>

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

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

     </init-param>

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

    </servlet>

    <servlet-mapping>

     <servlet-name>dispatch</servlet-name>

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

    </servlet-mapping>

  <welcome-file-list>

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

  </welcome-file-list>

</web-app>

3.在WEB-INF下的新建spring-servlet.xml,内容为

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

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

xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc"

xsi:schemaLocation="

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

  http://www.springframework.org/schema/beans/spring-beans-4.2.xsd

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

  http://www.springframework.org/schema/util/spring-util-4.2.xsd

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

  http://www.springframework.org/schema/context/spring-context-4.2.xsd

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

  http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">

           <context:component-scan base-package="com"></context:component-scan>

            <mvc:annotation-driven />

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

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

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

        <property name="viewClass"

                value="org.springframework.web.servlet.view.JstlView" />

        </bean>

      </beans>

4.在SRC下新建包 com.game.controller

5.在该包下新建类

package com.game.controller;

import java.io.IOException;

import java.util.Date;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;

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

import org.springframework.web.servlet.ModelAndView;

@Controller

public class Helloworld {

    @RequestMapping("/helloworlda")  //此处控制浏览器里访问路径 具体为：/SpringDemo/helloworld

    public void helloWorld(HttpServletRequest request, HttpServletResponse response) throws IOException {

        //输出字符串

        response.getWriter().append("hello world--a");

    }

    @RequestMapping("home")

    public ModelAndView home(){

        ModelAndView mv=new ModelAndView();

        mv.addObject("name","xiaoxiao");

         mv.getModel().put("age", "111110");

        return mv;

    }

}

6.在web-inf下新建名为jsp的文件夹,并新建home.jsP文件，内容为

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <base href="<%=basePath%>">

    <title>My JSP 'home.jsp' starting page</title>

    <meta http-equiv="pragma" content="no-cache">

    <meta http-equiv="cache-control" content="no-cache">

    <meta http-equiv="expires" content="0">

    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

    <meta http-equiv="description" content="This is my page">

    <!--

    <link rel="stylesheet" type="text/css" href="styles.css">

    -->

  </head>

  <body>

    This is my JSP page. ${age} ==${name} }<br>

  </body>

</html>

7.打开地址 http://localhost:8080/demo4/home.do