Spring

49. 응답 DTO - board 나머지 만들기 v7

송민경's avatar
송민경
Mar 21, 2024
49. 응답 DTO - board 나머지 만들기 v7

1. 글 조회하기

  • 글 수정 화면시 뿌려지는 데이터
package shop.mtcoding.blog.board;

import lombok.AllArgsConstructor;
import lombok.Data;
import shop.mtcoding.blog.reply.Reply;
import shop.mtcoding.blog.user.User;

import java.util.ArrayList;
import java.util.List;

public class BoardResponse {

    // 게시글 조회하기 화면
   @Data
    public static class LookDTO {
        private Integer id;
        private String title;
        private String content;

        public LookDTO(Board board) {
            this.id = board.getId();
            this.title = board.getTitle();
            this.content = board.getContent();
        }
    }
}
package shop.mtcoding.blog.board;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@RestController
public class BoardController {

    private final HttpSession session;
    private final BoardService boardService;

    @GetMapping("/api/boards/{id}")
    public ResponseEntity<?> lookUp(@PathVariable Integer id) {
        BoardResponse.LookDTO respDTO = boardService.lookUp(id);
        return ResponseEntity.ok(new ApiUtil<>(respDTO));
    }
}
package shop.mtcoding.blog.board;

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.Exception403;
import shop.mtcoding.blog._core.errors.exception.Exception404;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@Service
public class BoardService {

    private final BoardJPARepository boardJPARepository;

    public BoardResponse.LookDTO lookUp(int boardId){ // 글조회
        Board board = boardJPARepository.findById(boardId)
                .orElseThrow(() -> new Exception404("게시글을 찾을 수 없습니다"));
        return new BoardResponse.LookDTO(board);
    }
}
notion image
 

2. 글 쓰기

package shop.mtcoding.blog.board;

import lombok.AllArgsConstructor;
import lombok.Data;
import shop.mtcoding.blog.reply.Reply;
import shop.mtcoding.blog.user.User;

import java.util.ArrayList;
import java.util.List;

public class BoardResponse {

    // 글 쓰기
   @Data
    public static class SaveDTO {
        private Integer id;
        private String title;
        private String content;


        public SaveDTO(Board board) {
            this.id = board.getId();
            this.title = board.getTitle();
            this.content = board.getContent();
        }
    }
}
package shop.mtcoding.blog.board;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@RestController
public class BoardController {

    private final HttpSession session;
    private final BoardService boardService;

    @GetMapping("/api/boards/{id}")
    public ResponseEntity<?> lookUp(@PathVariable Integer id) {
        BoardResponse.LookDTO respDTO = boardService.lookUp(id);
        return ResponseEntity.ok(new ApiUtil<>(respDTO));
    }
}
package shop.mtcoding.blog.board;

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.Exception403;
import shop.mtcoding.blog._core.errors.exception.Exception404;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@Service
public class BoardService {

    private final BoardJPARepository boardJPARepository;

    @Transactional
    public BoardResponse.SaveDTO save(BoardRequest.SaveDTO reqDTO, User sessionUser) {
        Board board = boardJPARepository.save(reqDTO.toEntity(sessionUser));
        return new BoardResponse.SaveDTO(board); // sessionUser 정보는 사용되지 않으므로 제거
    }
}
 

3. 글 수정하기 

package shop.mtcoding.blog.board;

import lombok.AllArgsConstructor;
import lombok.Data;
import shop.mtcoding.blog.reply.Reply;
import shop.mtcoding.blog.user.User;

import java.util.ArrayList;
import java.util.List;

public class BoardResponse {

    // 게시글 조회하기 화면
    @Data
    public static class UpdateDTO {
        private Integer id;
        private String title;
        private String content;

        public UpdateDTO(Board board) {
            this.id = board.getId();
            this.title = board.getTitle();
            this.content = board.getContent();
        }
    }
}
package shop.mtcoding.blog.board;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@RestController
public class BoardController {

    private final HttpSession session;
    private final BoardService boardService;

    @PutMapping("/api/boards/{id}")
    public ResponseEntity<?> update(@PathVariable Integer id, @RequestBody BoardRequest.UpdateDTO reqDTO) {
        User sessionUser = (User) session.getAttribute("sessionUser");
        BoardResponse.UpdateDTO respDTOd = boardService.update(id, sessionUser.getId(), reqDTO);
        return ResponseEntity.ok(new ApiUtil<>(respDTOd));
    }
}
package shop.mtcoding.blog.board;

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.Exception403;
import shop.mtcoding.blog._core.errors.exception.Exception404;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@Service
public class BoardService {

    private final BoardJPARepository boardJPARepository;

    public BoardResponse.UpdateDTO update(int boardId, int sessionUserId, BoardRequest.UpdateDTO reqDTO) {
        // 1. 조회 및 예외처리
        Board board = boardJPARepository.findById(boardId)
                .orElseThrow(() -> new Exception404("게시글을 찾을 수 없습니다"));
        board.setTitle(reqDTO.getTitle());
        board.setContent(reqDTO.getContent());

        return new BoardResponse.UpdateDTO(board);
}
notion image
 

4. 글 삭제하기

package shop.mtcoding.blog.board;

import lombok.AllArgsConstructor;
import lombok.Data;
import shop.mtcoding.blog.reply.Reply;
import shop.mtcoding.blog.user.User;

import java.util.ArrayList;
import java.util.List;

public class BoardResponse {

    // 게시글 조회하기 화면
    @Data
    public static class DeleteDTO {
        private Integer id;
        private String title;
        private String content;

        public DeleteDTO(Board board) {
            this.id = board.getId();
            this.title = board.getTitle();
            this.content = board.getContent();
        }
    }
}
package shop.mtcoding.blog.board;

import jakarta.servlet.http.HttpSession;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import shop.mtcoding.blog._core.utils.ApiUtil;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@RestController
public class BoardController {

    private final HttpSession session;
    private final BoardService boardService;

    @DeleteMapping("/api/boards/{id}")
    public ResponseEntity<?> delete(@PathVariable Integer id) {
        User sessionUser = (User) session.getAttribute("sessionUser");
        BoardResponse.DeleteDTO respDTO = boardService.delete(id, sessionUser.getId());
        return ResponseEntity.ok(new ApiUtil<>(null));
    }
}
package shop.mtcoding.blog.board;

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.Exception403;
import shop.mtcoding.blog._core.errors.exception.Exception404;
import shop.mtcoding.blog.user.User;

import java.util.List;

@RequiredArgsConstructor
@Service
public class BoardService {

    private final BoardJPARepository boardJPARepository;

    @Transactional
    public BoardResponse.DeleteDTO delete(int boardId, Integer sessionUserId) {
        Board board = boardJPARepository.findById(boardId)
                .orElseThrow(() -> new Exception404("게시글을 찾을 수 없습니다"));
        if (sessionUserId != board.getUser().getId()) {
            throw new Exception403("게시글을 삭제할 권한이 없습니다");
        }
        boardJPARepository.deleteById(boardId);
        return new BoardResponse.DeleteDTO(board);
    }
notion image
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