Spring MVC HelloWorld实现

1. 开发环境

OS:Windows 7
Developer Tool:Eclipse Java EE IDE for Web Developers. Version: Luna Service Release 1 (4.4.1)
Database:Mysql5.5
Runtime Environment:Tomcat v8.0
JDK:jdk1.8.0_25
Project:Dynamic Web Project

2. 所需jar包

commons-logging-1.1.jar
spring-aop-4.2.0.BUILD-SNAPSHOT.jar
spring-aspects-4.2.0.BUILD-SNAPSHOT.jar
spring-beans-4.2.0.BUILD-SNAPSHOT.jar
spring-context-4.2.0.BUILD-SNAPSHOT.jar
spring-core-4.2.0.BUILD-SNAPSHOT.jar
spring-expression-4.2.0.BUILD-SNAPSHOT.jar
spring-instrument-4.2.0.BUILD-SNAPSHOT.jar
spring-jdbc-4.2.0.BUILD-SNAPSHOT.jar
spring-jms-4.2.0.BUILD-SNAPSHOT.jar
spring-messaging-4.2.0.BUILD-SNAPSHOT.jar
spring-orm-4.2.0.BUILD-SNAPSHOT.jar
spring-oxm-4.2.0.BUILD-SNAPSHOT.jar
spring-test-4.2.0.BUILD-SNAPSHOT.jar
spring-tx-4.2.0.BUILD-SNAPSHOT.jar
spring-web-4.2.0.BUILD-SNAPSHOT.jar
spring-webmvc-4.2.0.BUILD-SNAPSHOT.jar
spring-websocket-4.2.0.BUILD-SNAPSHOT.jar

jstl.jar
standard.jar

3. web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>SpringMVCLesson</display-name>

<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- 指定具体的配置文件为dispatcherServlet.xml -->
<param-value>classpath:dispatcherServlet-servlet.xml</param-value>
</init-param>
<!-- load-on-startup 启动顺序，让该servlet随容器一起启动，必须放在最后 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<!-- / 表示拦截全部请求 -->
<url-pattern>/</url-pattern>
</servlet-mapping>

</web-app>

4. dispatcherServlet-servlet.xml

<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd">

<!-- 默认的注解映射的支持 -->
<mvc:annotation-driven/>
<!--
<mvc:annotation-driven/> 开启注解映射支持，它是为了简化配置的缩写形式，它相当于以下2个配置：
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>
-->

<!-- 如果当前请求为"/"时，则转发到"/helloworld/index" -->
<mvc:view-controller path="/" view-name="forward:/helloworld/index"/>

<!-- 静态资源映射 -->
<mvc:resources location="/WEB-INF/js/" mapping="/js/**"/>
<mvc:resources location="/WEB-INF/css/" mapping="/css/**"/>
<mvc:resources location="/WEB-INF/images/" mapping="/images/**"/>
<mvc:resources location="/WEB-INF/plugins/" mapping="/plugins/**"/>
<!--
由于我们在web.xml文件里面配置的是拦截所有的请求到该servlet，所以我们在这里要对静态资源文件映射作一下配置，否则请求这些资源文件会返回404
-->

<!-- 当上面要访问的静态资源不包括在上面的配置中时，则根据此配置来访问 -->
<mvc:default-servlet-handler/>

<!-- 开启controller注解支持 -->
<!-- use-default-filters="false" 只扫描指定的注解 -->
<context:component-scan base-package="cn.voicet.web.controller" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="contentType" value="text/html"/>
<!-- 指定视图所在的文件夹 -->
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>

</beans>

5. HelloWorldController
 

package cn.voicet.web.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
@RequestMapping(value="/helloworld")
public class HelloWorldController {

@RequestMapping(value="/index", method={RequestMethod.GET})
public ModelAndView index()
{
ModelAndView mav = new ModelAndView();
mav.addObject("message", "Hello World!");
mav.setViewName("index");
return mav;
}
}

6.  index.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-9">
<title>Insert title here</title>
</head>
<body>
${message }
</body>
</html>

7. 项目截图



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