45. 응답 DTO - 회원정보 조회 만들기v7

1. 회원정보 조회

• 필요한 내용 : username, password, email

• 뿌릴 것 : username, email

2. UserResponse 만들어서 DTO 만들기

• entity를 DTO로 만들어야 함

• 내가 NEW하기 위한 기본 풀 생성자를 만들어야 함

package shop.mtcoding.blog.user;

import lombok.Data;

public class UserResponse {

    @Data
    public static class DTO { // 제일 기본 DTO
        private int id;
        private String username;
        private String email;
    }
}

• 생성자에 User 객체를 집어넣으면 됨

package shop.mtcoding.blog.user;

import lombok.Data;

public class UserResponse {

    @Data
    public static class DTO { // 제일 기본 DTO
        private int id;
        private String username;
        private String email;

        public DTO(User user) {
            this.id = user.getId();
            this.username = user.getUsername();
            this.email = user.getEmail();
        }
    }
}

3. UserController 에서 userinfo 수정하기

package shop.mtcoding.blog.user;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.data.repository.query.Param;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;

@RequiredArgsConstructor
@RestController
public class UserController {

    private final UserService userService;
    private final HttpSession session;

    @GetMapping("/api/user/{id}")
    public ResponseEntity<?> userinfo(@PathVariable Integer id) {
        UserResponse.DTO respDTO = userService.lookUp(id);
        return ResponseEntity.ok(new ApiUtil(respDTO));
    }
}

• UserService 에서 lookUp() 수정하기

package shop.mtcoding.blog.user;

import lombok.RequiredArgsConstructor;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import shop.mtcoding.blog._core.errors.exception.Exception400;
import shop.mtcoding.blog._core.errors.exception.Exception401;
import shop.mtcoding.blog._core.errors.exception.Exception404;
import shop.mtcoding.blog.board.Board;

import java.util.List;
import java.util.Optional;

@RequiredArgsConstructor
@Service // IoC에 등록
public class UserService { // 컨트롤러는 서비스가, 서비스는 레파지토리가 필요함 - 의존 관계

    private final UserJPARepository userJPARepository;

    public UserResponse.DTO lookUp(int id){ // 회원조회하
        User user = userJPARepository.findById(id)
                .orElseThrow(() -> new Exception404("회원정보를 찾을 수 없습니다."));
        return new UserResponse.DTO(user); //엔티티 생명 종료
    }
    public UserResponse.DTO update (int id, UserRequest.UpdateDTO reqDTO) {
        User user = userJPARepository.findById(id)
                .orElseThrow(() -> new Exception404("회원정보를 찾을 수 없습니다"));
        user.setPassword(reqDTO.getPassword());
        user.setEmail(reqDTO.getEmail());

       // userJPARepository.save(user);
        return new UserResponse.DTO(user);
    } // 더티체킹
}