Spring MVC 请求映射 （二）

完整的项目案例： springmvc.zip

目录

 

实例

项目结构：

一、配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <!-- 配置请求总控器 -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:dispatcher-servlet.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
</web-app>

二、配置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"
       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
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- 启用注解并扫描 -->
    <context:component-scan base-package="edu.nf.ch02.controller"/>
    <!-- 启用mvc注解驱动-->
    <mvc:annotation-driven/>

    <mvc:default-servlet-handler/>

    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>


</beans>

三、Controller类：

package edu.nf.ch02.controller;

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

/**
 * @author wangl
 * @date 2018/10/29
 */
@Controller
/**
 * @RequestMapping也可以标注在类上，
 * 通常用来指定请求的命名空间
 */
@RequestMapping("/user")
public class RequestMapController {

    /**
     * method属性用于指定能支持的请求方法,它的值为一个数组
     * @return
     */
    @RequestMapping(value = "/getUser", method = RequestMethod.GET)
    public ModelAndView getUser(){
        System.out.println("getUser...");
        return new ModelAndView("index");
    }

    @RequestMapping(value = "/login", method = RequestMethod.GET)
    public ModelAndView login(){
        System.out.println("login...");
        return new ModelAndView("index");
    }

    @RequestMapping(value = "/reg", method = {RequestMethod.POST,RequestMethod.GET})
    public ModelAndView reg(){
        System.out.println("reg...");
        return new ModelAndView("index");
    }

    /**
     * 在spring4.0之后，加入了明确的方法请求处理的注解
     * @return
     */
    @GetMapping("/login2")
    public ModelAndView getUser2(){
        System.out.println("getUser2...");
        return new ModelAndView("index");
    }

    @PostMapping("/reg2")
    public ModelAndView reg2(){
        System.out.println("login2...");
        return new ModelAndView("index");
    }
}

 html网页请求

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
 <form method="get" action="user/login">
     <input type="submit" value="login"/>
 </form>
</body>
</html>

转发结果：

 

posted @ 2018-11-07 19:30  黄浩#  阅读(184)  评论(0)  编辑  收藏  举报