简单的Spring MVC经典案例

主题：构建一个基于SpringMVC的HelloWord Web 项目

目的：快速体验什么是SpringMVC

方案：

　　1、创建工程，命名：SpringMVC

　　2、导包

　　3、在SRC下添加spring-mvc.xml配置文件

　　　（注意：名字可以随便取，最好就是看上就知道是什么）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
               http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
               http://www.springframework.org/schema/context
               http://www.springframework.org/schema/context/spring-context-4.0.xsd
               http://www.springframework.org/schema/tx
               http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
               http://www.springframework.org/schema/aop
               http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
               http://www.springframework.org/schema/mvc
                http://www.springframework.org/schema/mvc/spring-mvc.xsd">


</beans>

　　4、在web.xml配置封装在Spring里面的servlet--DispatcherServlet前端控制器，并指定spring-mvc.xml文件

<? 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" >
< display-name >SpringMVC </ display-name >
< 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-mvc.xml </ param-value >
</ init-param >

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

< servlet-name >SpringMVC </ servlet-name >

< url-pattern >*.action </ url-pattern >
</ servlet-mapping >
</ web-app >

　　5、在spring-mvc.xml中配置【HandlerMapping组件】------------------作用------>设置客户端请求与Controller

　　　　　　　　　　　　【InternalResourceViewResolver组件】--作用------>设置视图配置

【HelloController】------------------------作用------->测试请求处理

<? xml version="1.0" encoding="UTF-8" ?>
< beans xmlns ="http://www.springframework.org/schema/beans"
xmlns:mvc ="http://www.springframework.org/schema/mvc" xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context ="http://www.springframework.org/schema/context" xmlns:tx ="http://www.springframework.org/schema/tx"
xmlns:aop ="http://www.springframework.org/schema/aop"
xsi:schemaLocation ="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd" >



< bean id ="headlerMapping"
class ="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping" >
< property name ="mappings" >
< map >
< entry key ="/hello.action" >
< value >helloController </ value >
</ entry >
</ map >
</ property >
</ bean >


< bean id ="helloController" class ="controller.HelloController" />


< bean id ="viewResolver"
class ="org.springframework.web.servlet.view.InternalResourceViewResolver" >
< property name ="prefix" value ="WEB-INF/jsp/" />
< property name ="suffix" value =".jsp" />
</ bean >
</ beans >

　　6、编写HelloController【注意：需要实现Controller接口】

package 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{

@Override
public ModelAndView handleRequest(HttpServletRequest arg0, HttpServletResponse arg1) throws Exception {
ModelAndView mv= new ModelAndView("hello" );
System.out.println("处理hello.action请求" );
return mv;
}

}

　　7、在WEB-INF文件夹下新增"jsp"文件夹，并添加hello.jsp

<% @ page language = " java " contentType = " text/html; charset=UTF-8 "
pageEncoding = " UTF-8 " %>
<! DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" >
< html >
< head >
< meta http-equiv ="Content-Type" content ="text/html; charset=UTF-8" >
< title >Insert title here </ title >
</ head >
< body >
欢迎来到Spring的世界！
</ body >
</ html >

　　8、跑起来吧兄弟们~然后访问http://localhost/SpringMVC/hello.action，效果如下：

简单的Spring MVC经典案例

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