@RequestBody  请求体数据作为json绑定到数据对象上


    @RequestMapping("/update2")
	public UserDO update2(@RequestBody UserDO user) {
		userService.update(user);
		return user;
	}
	

浏览器发送请求报错	

org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing: public demo.data.UserDO demo.controller.UserController.update2(demo.data.UserDO)


postman 测试设置

post http://127.0.0.1:8090/user/update2
请求头设置 Content-Type application/json
请求体设置  raw 格式
{"id":1,"weight":3.33}

不设置 头 报错
org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'text/plain;charset=UTF-8' not supported