[스프링 부트] 9. DTO 클래스 작성

BoardResponse.java

public class BoardResponse {
    // 여러 개의 DTO 객체를 관리하기 위해 BoardResponse 클래스 작성

    @Data // Getter, Setter 필요
    public static class DTO {
        // BoardResponse.DTO 로 쓰기 위해 static 설정
        private int id;
        private String title;

        public DTO(Board board) {
            this.id = board.getId();
            this.title = board.getTitle();
        }
    }
}

BoardService.java

@RequiredArgsConstructor
@Service
public class BoardService {
    
    private final BoardRepository boardRepository;

    public List<BoardResponse.DTO> 게시글목록보기() {
        List<BoardResponse.DTO> dtos = new ArrayList<>();

        List<Board> boardList = boardRepository.findAll();

        // DTO 생성
        for (Board board : boardList) {
            BoardResponse.DTO dto = new BoardResponse.DTO(board);
            dtos.add(dto);
        }
        return dtos;
    } 
}

BoardController.java

@GetMapping("/") 
    public String list(Model model) { 
        List<BoardResponse.DTO> boardList = boardService.게시글목록보기();
        model.addAttribute("models", boardList);

        return "list";
    }