springmvc基础配置-02

注解开发

spring-servlet简化

<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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.2.xsd">
    <context:component-scan base-package="com.dronff.controller"/>
<!--需要让spring扫描注解的包-->

    <mvc:default-servlet-handler/>
    <mvc:annotation-driven />
    <bean id="InternalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

HelloController.java

package com.dronff.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
//@Controller == @Service == @Repository == @component 不同层用不同的注解
public class HelloController{
    @RequestMapping("/s/{a}")
    public String test1(@PathVariable int a, Model m){
        m.addAttribute("z",a);
        return "test";
    }
}