java映射嵌套列表

Question

我有一个包含嵌套对象列表的对象

@Getter
@Setter
@NoArgsConstructor
public class Notification {
    private Long id
    private Long statusId;
    private List <External> external;
}


@Getter
@Setter
@NoArgsConstructor
public class External{
    private Long externalId;
    private  LocalDate date;
}

Dto

@Getter
@Setter
@NoArgsConstructor
public class NotificationPayload {
    private Long id;
    private Long statusId;
    private List <ExternalReferencePayload> external;
}


@Getter
@Setter
@NoArgsConstructor
public class ExternalReferencePayload {
    private Long externalReferenceId;
}

制图员

@Mapper(componentModel = "spring")
public interface NotificationMapper{

  public Notification dtoToNotification(NotificationPayload  payload);
}

我搜索映射嵌套列表的方法

Answer 1

为了对某些元素执行自定义映射，只需要定义一个映射方法，其余的由MapStruct负责。在您的示例中：

@Mapper(componentModel = "spring")
public interface NotificationMapper{

  public Notification dtoToNotification(NotificationPayload  payload);

  @Mapping(target = "externalId", source = "externalReferenceId")
  public External dtoExternal(ExternalReferencePayload payload);
}

使用此方法，嵌套列表将使用dtoExternal映射方法来执行映射。使用@Mapping可以控制externalId和externalReferenceId之间的映射应该如何进行