springmvc注解事例

注解有简化，灵活性增强的功能

1.引入jar包

com.springsource.javax.validation-1.0.0.GA.jar
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
commons-fileupload-1.2.2.jar
commons-io-2.0.1.jar
hibernate-validator-4.1.0.Final.jar
log4j.jar
slf4j-api-1.5.8.jar
slf4j-log4j12.jar
spring-aop-3.2.2.jar
spring-aspects-3.2.2.jar
spring-beans-3.2.2.jar
spring-context-3.2.2.jar
spring-context-support-3.2.2.jar
spring-core-3.2.2.jar
spring-expression-3.2.2.jar
spring-tx-3.2.2.jar
spring-web-3.2.2.jar
spring-webmvc-3.2.2.jar

2.web.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <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_3_0.xsd" id="WebApp_ID" version="3.0">
 3   <display-name>springmvcAnnotion</display-name>
 4   
 5   
 6   <servlet>
 7         <servlet-name>action</servlet-name>
 8         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 9         <init-param>
10             <param-name>contextConfigLocation</param-name>
11             <param-value>classpath:spring-mvc.xml</param-value>
12         </init-param>
13         <load-on-startup>1</load-on-startup>
14     </servlet>
15     
16     <servlet-mapping>
17         <servlet-name>action</servlet-name>
18         <url-pattern>*.action</url-pattern>
19     </servlet-mapping>
20   
21   
22   
23   
24   <welcome-file-list>
25     <welcome-file>index.htm</welcome-file>
26     <welcome-file>index.jsp</welcome-file>
27   </welcome-file-list>
28 </web-app>

View Code

3.spring-mvc.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 4     xmlns:mvc="http://www.springframework.org/schema/mvc"
 5     xmlns:context="http://www.springframework.org/schema/context"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7             http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
 8             http://www.springframework.org/schema/mvc 
 9             http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
10             http://www.springframework.org/schema/context 
11             http://www.springframework.org/schema/context/spring-context-3.2.xsd ">
12 
13         <!-- 自动扫描注解 -->
14     <context:component-scan base-package="cn.itcast.springmvc.web.controller"/>
15     
16     <!-- 注解驱动 -->
17     <mvc:annotation-driven/>
18     
19     
20     <!-- 内部资源视图解析器  prefix + logicName + suffix /WEB-INF/jsps/ + index + .jsp-->
21 <!--     用于解析在controller 中return  ModelAndView中的视图名的拼凑 -->
22     <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
23         <!-- 前缀 -->
24         <property name="prefix" value="/WEB-INF/jsps/"/>
25         <!-- 后缀 -->
26         <property name="suffix" value=".jsp"/>
27     </bean>
28     
29 </beans>

3.controller.java

 1 package cn.itcast.springmvc.web.controller;
 2 
 3 import javax.servlet.http.HttpServletRequest;
 4 import javax.servlet.http.HttpServletResponse;
 5 
 6 import org.springframework.stereotype.Controller;
 7 import org.springframework.web.bind.annotation.RequestMapping;
 8 import org.springframework.web.servlet.ModelAndView;
 9 import org.springframework.web.servlet.mvc.AbstractController;
10 //这里声明是注解
11 @Controller
12 public class HomeController extends AbstractController {
13     //这里声明访问路径
14     @RequestMapping(value={"/home.action","/aa.action"})
15     @Override
16     protected ModelAndView handleRequestInternal(HttpServletRequest request,
17             HttpServletResponse response) throws Exception {
18 
19 
20         System.out.println("hello" + request.getContextPath() + request.getServletPath());
21         
22         return new ModelAndView("index");
23     }
24 
25 }

这样就可以通过localhost:8080/路径/aa.action 或者后面是home.action进行访问了