Cộng đồng Hỏi & Đáp của Inflearn

package com.study.mstudy.item.controller;

import com.study.mstudy.item.dto.ItemDTO;
import com.study.mstudy.item.dto.ResponseDTO;
import com.study.mstudy.item.service.ItemService;
import jakarta.validation.Valid;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping(value="v1/item")
@Slf4j
@RequiredArgsConstructor
public class ItemController {


private final ItemService itemService;

@RequestMapping(value="/add",method= RequestMethod.POST)
public ResponseEntity<ResponseDTO> add(@Valid @RequestBody ItemDTO itemDTO){

ResponseDTO.ResponseDTOBuilder responseDTOBuilder = ResponseDTO.builder();

itemService.insertItem(itemDTO);
log.debug("request add item id= {}",itemDTO.getId());

responseDTOBuilder.code("200").message("success");
return ResponseEntity.ok(responseDTOBuilder.build());
}

}

package com.study.mstudy.item.dto;import jakarta.validation.constraints.NotBlank;import jakarta.validation.constraints.Positive;import jakarta.validation.constraints.Size;import lombok.Data;@Datapublic class ItemDTO {@NotBlank(message = "ID는 필수 입력 값입니다.")@Size(max=10, message = "ID는 크기 10이하까지 작성가능합니다.")private String id; @Size(max=20, message = "이름은 20자까지 작성가능합니다.")private String name; @Size(max=200, message = "설명은 최대 200자까지 작성가능합니다.")private String description; @Positive private long count; private String regDts; private String updDts;}

예제 보고 따라했으나..
결과는 이미지 처럼 나오는데 저도 포스트맨으로
설정하면 선생님처럼 나오게하고 싶은데 방법이 있을까요?