笔记16 使用注解的方式进行跳转的配置

1.修改IndexController

在类前面加上@Controller 表示该类是一个控制器
在方法handleRequest 前面加上 @RequestMapping("/index") 表示路径/index会映射到该方法上
注意：不再让IndexController实现Controller接口

 1 package 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 
10 @Controller
11 public class IndexController {
12     @RequestMapping("/index")
13     public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
14 
15         ModelAndView mav = new ModelAndView("index");
16         mav.addObject("message", "Hello Spring MVC——————注解方式");
17         return mav;
18     }
19 }

2.修改springmvc-servlet.xml

去掉映射相关的配置，因为已经使用注解方式了
增加:<context:component-scan base-package="controller" />

表示从包controller下扫描有@Controller注解的类

 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:context="http://www.springframework.org/schema/context"
 5     xsi:schemaLocation="http://www.springframework.org/schema/beans
 6     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
 7     http://www.springframework.org/schema/context         
 8     http://www.springframework.org/schema/context/spring-context-3.0.xsd">
 9     
10     <context:component-scan base-package="controller" />
11     <bean id="irViewResolver"
12         class="org.springframework.web.servlet.view.InternalResourceViewResolver">
13         <property name="prefix" value="/WEB-INF/page/" />
14         <property name="suffix" value=".jsp" />
15     </bean>
16 
17 </beans>

3.测试