Java学习笔记(十八)-SpringMvc(三)

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SpringMvc注解实现

1.编辑HelloController

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

@Controller//必需要手输从idea引用的选
public class HelloController {

    @RequestMapping("/hello")//表示路径 /hello 会映射到该方法上
    public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse) throws Exception {
        ModelAndView mav = new ModelAndView("index.jsp");
        mav.addObject("message", "Hello Spring MVC666");
        return mav;
    }
}

2.修改dispatcher-servlet.xml

<?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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!--    <bean id="simpleUrlHandlerMapping"-->
<!--          class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">-->
<!--        <property name="mappings">-->
<!--            <props>-->
<!--                &lt;!&ndash; /hello 路径的请求交给 id 为 helloController 的控制器处理&ndash;&gt;-->
<!--                <prop key="/hello">helloController</prop>-->
<!--            </props>-->
<!--        </property>-->
<!--    </bean>-->
<!--    <bean id="helloController" class="controller.HelloController"></bean>-->
//扫描controller下组件
    <context:component-scan base-package="controller"/>
</beans>

3.运行结果

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