SpringBoot 中 get/post 请求处理方式,以及requestboy为Json时的处理

时间:2023-03-09 01:19:50
SpringBoot 中 get/post 请求处理方式,以及requestboy为Json时的处理

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);
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 + "<br> 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);
}
}