spring boot get和post请求,以及requestbody为json串时候的处理

GET、POST方式提时, 根据request header Content-Type的值来判断:

  •     application/x-www-form-urlencoded, 可选(即非必须,因为这种情况的数据@RequestParam, @ModelAttribute也可以处理,当然@RequestBody也能处理);
  •     multipart/form-data, 不能处理(即使用@RequestBody不能处理这种格式的数据);
  •     其他格式, 必须(其他格式包括application/json, application/xml等。这些格式的数据,必须使用@RequestBody来处理);
代码:

package com.example.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.example.bean.RequestLoginBean;
import com.example.response.BaseResponse;
import com.google.gson.Gson;

@RestController
@RequestMapping(value = "/index")
public class Login {

	/**
	 * index home
	 * 
	 * @return
	 */
	@RequestMapping(value = "/home")
	public String home() {
		return "index home";
	}
	
	/**
	 * 得到1个参数
	 * 
	 * @param name
	 *            用户名
	 * @return 返回结果
	 */
	@GetMapping(value = "/{name}")
	public String index(@PathVariable String name) {
		return "oh you are " + name + "
nice to meet you";// \n不起作用了,那就直接用html中的标签吧 } /** * 简单post请求 * * @param name * @param pwd * @return */ @RequestMapping(value = "/testpost", method = RequestMethod.POST) public String testpost() { System.out.println("hello test post"); return "ok"; } /** * 同时得到两个参数 * * @param name * 用户名 * @param pwd * 密码 * @return 返回结果 */ @GetMapping(value = "/login/{name}&{pwd}") public String login(@PathVariable String name, @PathVariable String pwd) { if (name.equals("admin") && pwd.equals("admin")) { return "hello welcome admin"; } else { return "oh sorry user name or password is wrong"; } } /** * 通过get请求去登陆 * * @param name * @param pwd * @return */ @RequestMapping(value = "/loginbyget", method = RequestMethod.GET) public String loginByGet(@RequestParam(value = "name", required = true) String name, @RequestParam(value = "pwd", required = true) String pwd) { return login4Return(name, pwd); } /** * 通过post请求去登陆 * * @param name * @param pwd * @return */ @RequestMapping(value = "/loginbypost", method = RequestMethod.POST) public String loginByPost(@RequestParam(value = "name", required = true) String name, @RequestParam(value = "pwd", required = true) String pwd) { System.out.println("hello post"); return login4Return(name, pwd); } /** * 参数为一个bean对象.spring会自动为我们关联映射 * @param loginBean * @return */ @RequestMapping(value = "/loginbypost1", method = { RequestMethod.POST, RequestMethod.GET }) public String loginByPost1(RequestLoginBean loginBean) { if (null != loginBean) { return login4Return(loginBean.getName(), loginBean.getPwd()); } else { return "error"; } } /** * 请求内容是一个json串,spring会自动把他和我们的参数bean对应起来,不过要加@RequestBody注解 * * @param name * @param pwd * @return */ @RequestMapping(value = "/loginbypost2", method = { RequestMethod.POST, RequestMethod.GET }) public String loginByPost2(@RequestBody RequestLoginBean loginBean) { if (null != loginBean) { return login4Return(loginBean.getName(), loginBean.getPwd()); } else { return "error"; } } /** * 对登录做出响应处理的方法 * * @param name * 用户名 * @param pwd * 密码 * @return 返回处理结果 */ private String login4Return(String name, String pwd) { String result; BaseResponse response = new BaseResponse(); if (name.equals("admin") && pwd.equals("admin")) { result = "hello welcome admin"; response.setState(true); } else { result = "oh sorry user name or password is wrong"; response.setState(false); } System.out.println("收到请求,请求结果:" + result); return new Gson().toJson(response); } }


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