프로젝트 서비스, 컨트롤러 개발과정

서비스

• 댓글을 저장하는 서비스 코드
• 파라미터가 많아져 관리와 가독성이 떨어질 경우 saveWithParams 사용

   @Transactional
    public void save(Long styleId, String content, Long memberId) {
        Style style = styleRepository.findById(styleId)
                                     .orElseThrow(() -> new SmException(ReturnCode.POST_NOT_FOUND));

        Member member = memberRepository.findById(memberId)
                        .orElseThrow(() -> new SmException(ReturnCode.MEMBER_NOT_FOUND));

        Comment comment = Comment.builder()
                .member(member)
                .style(style)
                .content(content)
                .build();

        commentRepository.save(comment);
    }

    @Transactional
    public void saveWithParams(SaveCommentParam param) {
        Style style = styleRepository.findById(param.getStyleId())
                                     .orElseThrow(() -> new SmException(ReturnCode.POST_NOT_FOUND));

        Member member = memberRepository.findById(param.getMemberId())
                                        .orElseThrow(() -> new SmException(ReturnCode.MEMBER_NOT_FOUND));

        Comment comment = param.toEntity(style, member);
        commentRepository.save(comment);
    }

SaveCommentParam

• 엔티티로 변환하는 로직 보유

package project.stylemate.dto.params;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;
import project.stylemate.entity.Comment;
import project.stylemate.entity.Member;
import project.stylemate.entity.Style;

@Getter
@AllArgsConstructor
@Builder
@NoArgsConstructor
public class SaveCommentParam {
    private Long memberId;
    private String content;
    private Long styleId;

    public Comment toEntity(Style style, Member member) {
        return Comment.builder()
                .style(style)
                .member(member)
                .content(content)
                .build();
    }
}

컨트롤러

    @PostMapping("/api/v1/styles/{styleId}/comments")
    public ApiResponse<?> save(@PathVariable Long styleId, @RequestBody SaveCommentRequest saveCommentRequest) {
        // TODO: member 작업 이후 argument resolver로 받기
        Long memberId = 1L;

        commentService.save(styleId, saveCommentRequest.getContent(), memberId);

        return ApiResponse.of(ReturnCode.SUCCESS);
    }

    @PostMapping("/api/v2/styles/{styleId}/comments")
    public ApiResponse<?> saveWithParams(@PathVariable Long styleId, @RequestBody SaveCommentRequest saveCommentRequest) {
        // TODO: member 작업 이후 argument resolver로 받기
        Long memberId = 1L;

        SaveCommentParam param = saveCommentRequest.convert(styleId, memberId);
        commentService.saveWithParams(param);

        return ApiResponse.of(ReturnCode.SUCCESS);
    }

SaveCommentRequest

• SaveCommentParam으로 변환하는 로직 보유

package project.stylemate.dto;

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;
import project.stylemate.dto.params.SaveCommentParam;


@Getter
@NoArgsConstructor
@AllArgsConstructor
@Builder
public class SaveCommentRequest {
    private String content;

    public SaveCommentParam convert(Long styleId, Long memberId) {
        return SaveCommentParam.builder()
                .content(content)
                .styleId(styleId)
                .memberId(memberId)
                .build();
    }
}