controller层常用注解:@RequestMapping、@PostMapping、@GetMapping总结 以及 Spring MVC @GetMapping和@PostMapping注解
地址的父路径。
POST请求和GET请求的区别
可参考:
可参考:
@GetMapping用于将HTTP get请求映射到特定处理程序的方法注解 具体来说,@GetMapping是一个组合注解,是@RequestMapping(method = RequestMethod.GET)的缩写。
@PostMapping用于将HTTP post请求映射到特定处理程序的方法注解 具体来说,@PostMapping是一个组合注解,是@RequestMapping(method = RequestMethod.POST)的缩写。
Spring MVC @GetMapping和@PostMapping注解的使用
创建HelloWorldController
- package com.controller;
- import org.springframework.stereotype.Controller;
- import org.springframework.ui.Model;
- import org.springframework.web.bind.annotation.GetMapping;
- import org.springframework.web.bind.annotation.PostMapping;
- @Controller
- public class HelloWorldController {
- //只接受get方式的请求
- @GetMapping("/testGetMapping")
- public String testGetMapping(Model model) {
- model.addAttribute("msg","测试@GetMapping注解");
- return "success";
- }
- //只接受post方式的请求
- @PostMapping("/testPostMapping")
- public String testPostMapping(Model model) {
- model.addAttribute("msg","测试@PostMapping注解");
- return "success";
- }
- }
创建index.jsp
- <%@ page language="java" contentType="text/html; charset=utf-8"
- pageEncoding="utf-8"%>
- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>indextitle>
- head>
- <body>
- <form action="testGetMapping" method="get">
- <button>测试@GetMapping注解button>
- form>
- <br>
- <form action="testPostMapping" method="post">
- <button>测试@PostMapping注解button>
- form>
- body>
- html>
创建success.jsp
- <%@ page language="java" contentType="text/html; charset=utf-8"
- pageEncoding="utf-8"%>
- <%@taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
- html>
- <html>
- <head>
- <meta charset="utf-8">
- <title>successtitle>
- head>
- <body>
- ${requestScope.msg }
- body>
- html>
启动Tomcat访问index.jsp
点击【测试@GetMapping注解】
点击【测试@PostMapping注解】