DTO的直播应该在哪个项目层进行屏蔽

DTO的直播应该在哪个项目层进行屏蔽？

java
// 领域层中的直播间领域模型
public class LiveRoom {
    private String roomId;
    private String roomName;
    public LiveRoom(String roomId, String roomName) {
        this.roomId = roomId;
        this.roomName = roomName;
    }
    // 省略其他属性和方法
    // 将直播间转换为DTO
    public LiveRoomDto toDto() {
        return new LiveRoomDto(roomId, roomName);
    }
}
// 领域层中的观众领域模型
public class Audience {
    private String audienceId;
    private String audienceName;
    public Audience(String audienceId, String audienceName) {
        this.audienceId = audienceId;
        this.audienceName = audienceName;
    }
    // 省略其他属性和方法
    // 将观众转换为DTO
    public AudienceDto toDto() {
        return new AudienceDto(audienceId, audienceName);
    }
}
// DTO的直播间对象
public class LiveRoomDto {
    private String roomId;
    private String roomName;
    public LiveRoomDto(String roomId, String roomName) {
        this.roomId = roomId;
        this.roomName = roomName;
    }
    // 省略getter和setter方法
}
// DTO的观众对象
public class AudienceDto {
    private String audienceId;
    private String audienceName;
    public AudienceDto(String audienceId, String audienceName) {
        this.audienceId = audienceId;
        this.audienceName = audienceName;
    }
    // 省略getter和setter方法
}
// 应用层中的直播服务
public class LiveService {
    private LiveRoomRepository liveRoomRepository;
    private AudienceRepository audienceRepository;
    public LiveService(LiveRoomRepository liveRoomRepository, AudienceRepository audienceRepository) {
        this.liveRoomRepository = liveRoomRepository;
        this.audienceRepository = audienceRepository;
    }
    public LiveRoomDto getLiveRoomById(String roomId) {
        LiveRoom liveRoom = liveRoomRepository.findById(roomId);
        return liveRoom.toDto();
    }
    public AudienceDto getAudienceById(String audienceId) {
        Audience audience = audienceRepository.findById(audienceId);
        return audience.toDto();
    }
}
// 表示层中的控制器
public class LiveController {
    private LiveService liveService;
    public LiveController(LiveService liveService) {
        this.liveService = liveService;
    }
    public LiveRoomDto getLiveRoom(String roomId) {
        return liveService.getLiveRoomById(roomId);
    }
    public AudienceDto getAudience(String audienceId) {
        return liveService.getAudienceById(audienceId);
    }
}