Spring MVC HelloWorld入门例子-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_5117/article/details/82365941

本例子为你讲解在spring3中如何使用基于注解的mvc框架.

例子中使用到的工具：
MyEclipse 9.1
jdk 1.6

[size=x-large]1.添加Jar包引用[/size]
由于使用了Maven管理项目，所以，第一步就是添加引用.(没有使用Maven怎么办？那你直接下载Spring3的压缩包，添加相应的Jar文件就可以了。)


<dependency>
    	<groupId>org.springframework</groupId>
    	<artifactId>spring-web</artifactId>
    	<version>3.1.1.RELEASE</version>
    	<type>jar</type>
    	<scope>compile</scope>
    </dependency>
    <dependency>
    	<groupId>org.springframework</groupId>
    	<artifactId>spring-core</artifactId>
    	<version>3.1.1.RELEASE</version>
    	<type>jar</type>
    	<scope>compile</scope>
    </dependency>
    <dependency>
    	<groupId>org.springframework</groupId>
    	<artifactId>spring-webmvc</artifactId>
    	<version>3.1.1.RELEASE</version>
    	<type>jar</type>
    	<scope>compile</scope>
    </dependency>

[size=x-large]2.编写 Controller 和 Mapping[/size]
我们采用注解的方式配置，如果想使用XML的方式，可以查看文档，都是一样的配制方法.


package com.vito.action;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/welcome")
public class HelloWorldController {
	@RequestMapping(value="/hello",method = RequestMethod.GET)
	public String printWelcome(ModelMap model) {
		model.addAttribute("message", "Spring 3 MVC Hello World");
		return "hello";
	}
}

[size=x-large]3.JSP视图[/size]


<html>
<body>
	<h1>Message : ${message}</h1>	
</body>
</html>

[size=x-large]4.Spring配置文件[/size]


<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

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

	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix">
                        <!-- 这个配置是配置JSP页面的位置，按照你自己的配置来配 -->
			<value>/WEB-INF/pages/</value>
		</property>
		<property name="suffix">
			<value>.jsp</value>
		</property>
	</bean>

</beans>

[size=x-large]5.web.xml[/size]


<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
	<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:applicationContext.xml</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>springMvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
</web-app>

[size=x-large]6.成果[/size]
访问：[url]http://localhost:8080/sw/welcome/hello/[/url]
就可以得到这样的画面了：
[img]http://dl.iteye.com/upload/picture/pic/115098/5600bdfa-6b71-3520-87c4-ee1c36d29f74.png[/img]

项目文件已上传.使用myeclipse9导入即可