springmvc 梳理2--注解形式 简单体验

springmvc-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"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- 自动扫包 -->
    <context:component-scan base-package="com.xinzhi"/>
    <!-- 让Spring MVC不处理静态资源 -->
    <mvc:default-servlet-handler />
    <!-- 让springmvc自带的注解生效 -->
    <mvc:annotation-driven />

    <!-- 处理映射器 -->
    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
    <!-- 处理器适配器 -->
    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
    <!--视图解析器:DispatcherServlet给他的ModelAndView-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          id="InternalResourceViewResolver">
        <!--前缀-->
        <property name="prefix" value="/WEB-INF/page/"/>
        <!--后缀-->
        <property name="suffix" value=".jsp"/>
    </bean>


</beans>

FirstController.java

package com.xinzhi.controller;

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

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

/**
 * @author sr
 * @date 2021/1/25
 */
@Controller
@RequestMapping("/user")
public class FirstController {
    @RequestMapping("/add")
    public String addUser(Model model,HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
    //模型里封装数据
       model.addAttribute("hellomvc","add");
        return "hellomvc";
    }

    @RequestMapping("/delete")
    public String deleteUser(Model model,HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
        //模型里封装数据
        model.addAttribute("hellomvc","delete");
        return "hellomvc";
    }
}

 

注意：

return返回的是相对应的页面名字，但是上面显示的，是@RequestMapping里面的value，也就是说，webapp/WEB-INF/page里面的页面，不可以被直接访问