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SpringMVC【一 简单入门例子】

2013-12-10 14:59 519 查看
1 首先在eclipse用maven,创建简单的web工程

2 修改pom.xml 添加

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.2.4.RELEASE</version>
</dependency>


3 修改web.xml (默认是servlet 2.3的不支持el 改成2.5)

<?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"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
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">
<!-- spring 入口配置 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<!-- 扩展SpringMvc DispatcherServlet，启动绑定initParam参数 -->
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- springmvc配置文件路径 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<!-- springMvc 请求后缀  -->
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter </filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf8</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>encodingFilter</filter-name >
<url-pattern>/*</url-pattern>
</filter-mapping>
<display-name>Archetype Created Web Application</display-name>
</web-app>


4 在 src/main/resources 资源目录下添加 第三步配置的springmvc-servlet.xml文件

<mvc:annotation-driven/>表示使用注解进行开

<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc  http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context-3.1.xsd"> <description>Spring mvc配置</description>

<mvc:annotation-driven/>

<context:component-scan base-package="com.keeley.Controller">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
<!-- 定义首页 -->
<mvc:view-controller path="/" view-name="redirect:/test" />

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


5 在src/main 下面添加目录 java 然后maven:clean下，eclipse就能识别成source目录了

然后建立Controller

package com.keeley.Controller;

import java.util.Map;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class TestController {

@RequestMapping("/test")
public String test(String name,Map<String,Object> out){
//name 传递到这个服务的参数
//Map传递到前端作用域的MAP 前端用${key}获取值
if(name==null) name="";

out.put("msg", "欢迎你:"+name);

return "test";
}
}


6 在webapp下面新建目录 jsp(前面spring配置的统一输出路径),jsp目录新建test.jsp,测试下控制端传递的参数

<%@ 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>springmvc</title>
</head>
<body>
${msg }<br/>
</body>
</html>


7 运行 maven clean tomcat:run

访问 http://localhost:8080/你的工程名/test?name=myname
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