Spring BootとJPAを使用した2-TIL(1)

💡 API開発基盤

会員登録API

@RestController
@RequiredArgsConstructor
public class MemberApiController {

    private final MemberService memberService;

    @PostMapping("/api/v1/members")
    public CreateMemberResponse saveMemberV1(@RequestBody @Valid Member member) {
        Long id = memberService.join(member);
        return new CreateMemberResponse(id);
    }

    @Data
    static class CreateMemberRequest {
        @NotEmpty
        private String name;
    }

    @Data
    static class CreateMemberResponse {
        private Long id;

        public CreateMemberResponse(Long id) {
            this.id = id;
        }
    }
}

V 1エンティティをRequest Bodyに直接マッピング

DTOをV 2エンティティではなくRequest Bodyにマッピング

    @PostMapping("/api/v2/members")
    public CreateMemberResponse saveMemberV2(@RequestBody @Valid CreateMemberRequest request) {
        Member member = new Member();
        member.setName(request.getName());

        Long id = memberService.join(member);
        return new CreateMemberResponse(id);
    }

#会員APIの変更

    @PutMapping("/api/v2/members/{id}")
    public UpdateMemberResponse updateMemberV2(
            @PathVariable("id") Long id,
            @RequestBody @Valid UpdateMemberRequest request) {

        memberService.update(id, request.getName());
        Member findMember = memberService.findOne(id);
        return new UpdateMemberResponse(findMember.getId(), findMember.getName());
    }

    @Data
    static class UpdateMemberRequest {
        private String name;
    }

    @Data
    @AllArgsConstructor
    static class UpdateMemberResponse {
        private Long id;
        private String name;
    }

    @Transactional
    public void update(Long id, String name) {
        Member member = memberRepository.findOne(id);
        member.setName(name);
    }

▼▼▼会員照会API

public class MemberApiController {

    private final MemberService memberService;

    @GetMapping("/api/v1/members")
    public List<Member> membersV1() {
        return memberService.findMembers();
    }
}

    @GetMapping("/api/v2/members")
    public Result membersV2() {
        List<Member> findMembers = memberService.findMembers();
        List<MemberDto> collect = findMembers.stream()
                .map(m -> new MemberDto(m.getName()))
                .collect(Collectors.toList());

        return new Result(collect.size(), collect);
    }

    @Data
    @AllArgsConstructor
    static class Result<T> {
        private int count;
        private T data;
    }

    @Data
    @AllArgsConstructor
    static class MemberDto {
        private String name;
    }