spring 3 MVC 笔记 1

Spring3 MVC 学习笔记：用 STS 创建 spring template project, 选择spring MVC template,创建成功后，一个最基本的 hello world 应用就创建成功了。

配置：jar包：



web.xml

<?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"> 
<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>

<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--如果不配置指定spring mvc config文件的位置，spring 会默认加载 WEB-INF/${servlet-name}-servlet.xml-->
<!--
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</init-param>
-->
<load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

</web-app>

${servlet-name}-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd 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"> 
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />

<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />

<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>

<context:component-scan base-package="home.dong.springmvc" />

</beans:beans>

Controller Java Class :

package home.dong.springmvc;

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

/**
* @Controller 标明这是一个controller.
* @RequestMapping(value="/simple") 定义类级别的request mapping 的访问路径.
* @author tiger
*
*/
@Controller
@RequestMapping(value="/simple")
public class SimpleMapping {

/**
* 将跳转到 WEB-INF/view/simple.jsp 返回的字符串就是jsp的文件名。
* 此访问路径为 http://localhost:8080/application_name/simple/simpleGet * @return jsp 文件名
*/
@RequestMapping(value="/simpleGet")
public String simpleGetMethod(){
return "simple";
}

/**
* 方法前加了 @ResponseBody 表明次方法将返回字符串
* 返回字符串<h5>this is simple world</h5>
* 此访问路径为 http://localhost:8080/application_name/simple/otherSimpleGet * @return String 字符串
*/
@RequestMapping(value="/otherSimpleGet",method=RequestMethod.GET)
public @ResponseBody String otherSimpleGetMethod(){
return "<h5>this is simple world</h5>";
}
}