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

package controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class IndexController {
    @RequestMapping("/index")
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {

        ModelAndView mav = new ModelAndView("index");
        mav.addObject("message", "Hello Spring MVC——————注解方式");
        return mav;
    }
}

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

<?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:context="http://www.springframework.org/schema/context"
    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="controller" />
    <bean id="irViewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/page/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>

3.测试