使用automapper将复杂的dto映射到实体

Question

我想从

LDTTicketUploadDTO[] to IEnumerable<LDTTicket>

映射是在这个方法中创建的，最后我映射数据。

public void UploadLDTTickets(LDTTicketUploadDTO[] ticketDTOs)
        {
            Mapper.CreateMap<LDTTicketUploadDTO, LDTTicket>();
            Mapper.CreateMap<LDTTicketDTO, LDTTicket>();
            Mapper.CreateMap<LDTCustomerDTO, LDTCustomer>();
            Mapper.CreateMap<LDTDeviceDTO, LDTDevice>();
            Mapper.CreateMap<LDTUnitDTO, LDTUnit>();
            Mapper.CreateMap<LDTCommandDTO, LDTCommand>();
            Mapper.CreateMap<LDTCommandParameterDTO, LDTCommandParameter>();
            Mapper.CreateMap<LDTObjectDTO, LDTObject>();
            Mapper.CreateMap<LDTControlFileDTO, LDTControlFile>();
            Mapper.CreateMap<LDTDeviceDTO, LDTDevice>();
            Mapper.CreateMap<LDTLanguageDTO, LDTLanguage>();
            Mapper.CreateMap<LDTObjectBitDTO, LDTObjectBit>();
            var tickets = Mapper.Map<IEnumerable<LDTTicketUploadDTO>, IEnumerable<LDTTicket>>(ticketDTOs);
           // do something with tickets
        }

DTO的结构如下:

 public class LDTTicketUploadDTO
     {
            public LDTTicketDTO Ticket { get; set; }
            public LDTDeviceDTO Device { get; set; }
            public LDTCustomerDTO Customer { get; set; }
     }

 public enum TicketStatus
    {
        New,
        InProgress,
        Done
    }    
    public class LDTTicketDTO
    {
        public bool UploadNeeded { get; set; }
        public string TicketNumber { get; set; }
        public TicketStatus Status { get; set; }
        public string CreatedBy { get; set; }
        public DateTime CreatedOn { get; set; }
        public string AssignedTo { get; set; }
        public IEnumerable<LDTUnitDTO> Units { get; set; }
    }
 public class LDTUnitDTO
    {
        public int Id { get; set; }
        public string FunctionUnit { get; set; }
        public int FunctionUnitAddress { get; set; }
        public string Zone { get; set; }
        public int ZoneUnitAddress { get; set; }
        public string Object { get; set; }
        public int ObjectAddress { get; set; }
        public IEnumerable<LDTCommandDTO> Commands { get; set; }
    }
and more...

的作用是将这些属性正确映射到对应的实体:

public LDTDeviceDTO Device { get; set; }
public LDTCustomerDTO Customer { get; set; }

不有效的是该属性不被映射:

  public LDTTicketDTO Ticket { get; set; }

实体的结构如下:

public class LDTTicket
    {
        [Key, Column(Order = 0)]
        [Required]
        public string SerialNumber { get; set; }
        [Key, Column(Order = 1)]
        [Required]
        public string TicketNumber { get; set; }
        [Required]
        public DateTime CreatedOn { get; set; }
        [Required]
        public string AssignedTo { get; set; }
        public TicketStatus Status { get; set; }
        public string CreatedBy { get; set; }
        public bool UploadNeeded { get; set; }
        public virtual LDTCustomer Customer { get; set; }
        public virtual LDTDevice Device { get; set; }
        public virtual ICollection<LDTUnit> Units { get; set; }
    }

只有Customer和Device属性被映射到LDTTicket

我的配置有什么问题?

Answer 1

它期望填充票证上的LDTTicket子属性，而不是票证本身的匹配属性。从源的Ticket子属性直接到目标的匹配属性，创建到票证的直接映射。注意:您只需要定义一次映射，而不是每次执行方法。映射应该在应用启动时定义，然后再使用。

public void UploadLDTTickets(LDTTicketUploadDTO[] ticketDTOs)
{
    Mapper.CreateMap<LDTTicketUploadDTO, LDTTicket>();
          .ForMember(d => d.SerialNumber, m => m.MapFrom(s => s.Ticket.SerialNumber))
              ...
    //Mapper.CreateMap<LDTTicketDTO, LDTTicket>(); You don't need this
    Mapper.CreateMap<LDTCustomerDTO, LDTCustomer>();
    Mapper.CreateMap<LDTDeviceDTO, LDTDevice>();
    ...
}