ASP.. NET Core AutoMapper配置错误

Question

我试图映射一个实体与模型，但它给出了一个错误，我怎么能检查哪个属性是导致错误?

错误:AutoMapper。AutoMapperMappingException: '错误的映射类型。'AutoMapperMappingException:缺少类型映射配置或不支持映射。
这个异常最初是在这个调用堆栈中抛出的:

AutoMapper. mapper . mapcore<TSource,>(TSource, TDestination, AutoMapper。ResolutionContext、系统。类型系统。类型，AutoMapper. membermap)
AutoMapper. mapper .AutoMapper. iinternalruntimemapper . map<TSource,>(TSource, TDestination, AutoMapper. membermap)ResolutionContext、系统。类型系统。类型，AutoMapper.MemberMap)
AutoMapper.ResolutionContext.MapInternal<TSource,>(TSource, TDestination, AutoMapper.MemberMap)

public class AutoMapperProfile : Profile
{
public AutoMapperProfile()
{
CreateMap<Account, AccountModel>();
CreateMap<AccountModel, Account>();
CreateMap<ServicePlan, ServicePlanModel>()
.ForMember(ServicePlanModel => ServicePlanModel.ServicePlanDetails, opt => opt.MapFrom(src => src.ServicePlanDetails.ToList()))
.ForMember(dest => dest.Lines, opt => opt.MapFrom(src => src.NLines ?? default))
.ForMember(dest => dest.StartDate, opt => opt.MapFrom(src => src.DateStart))
.ForMember(dest => dest.EndDate, opt => opt.MapFrom(src => src.DateEnd))
.ForMember(dest => dest.MonthlyCharges, opt => opt.MapFrom(src => src.AmountMonthly))
.ForMember(dest => dest.OneTimeCharges, opt => opt.MapFrom(src => src.AmountOnetime));
}
}
public async Task<List<ServicePlanModel>> GetServicePlansWithDetails(long accountId)
{
var plan = mapper.Map<ServicePlan, ServicePlanModel>(servicePlan);
}
public partial class ServicePlan
{
public ServicePlan()
{
ServicePlanDetails = new HashSet<ServicePlanDetail>();
}
public long PlanId { get; set; }
public decimal PhoneId { get; set; }
public byte? NLines { get; set; }
public DateTime? DateStart { get; set; }
public DateTime? DateEnd { get; set; }
public decimal? AmountMonthly { get; set; }
public decimal? AmountOnetime { get; set; }
public string? ContractType { get; set; }
public string? CallerId { get; set; }
public bool? Active { get; set; }
public short? ResellerId { get; set; }
public int? OnetimeInvoiceNo { get; set; }
public bool? IsRequest { get; set; }
public string? RequestType { get; set; }
public string? NewValue { get; set; }
public DateTime? RequestDate { get; set; }
public string? RequestBy { get; set; }
public bool? IsRejected { get; set; }
public bool? IsApproved { get; set; }
public DateTime? ApprovedWhen { get; set; }
public string? ApprovedBy { get; set; }
public string? Comments { get; set; }
public string? AdditionalDetails { get; set; }
public string? VideoTronId { get; set; }
public string? Zone { get; set; }
public string? PrevProvider { get; set; }
public bool? Charge911Tax { get; set; }
public string? ContractTerms { get; set; }
public long? ContractId { get; set; }
public int AllowedBandwidth { get; set; }
public DateTime? ServiceStartDate { get; set; }
public string? AppointmentTime { get; set; }
public DateTime? AppointmentEmailSentOn { get; set; }
public string? TrackingNumber { get; set; }
public bool? HasNumberPort { get; set; }
public DateTime? EstPortDate { get; set; }
public DateTime? PortCompletedOn { get; set; }
public bool? IsExGbchargesLimited { get; set; }
public decimal? ExGbchagesLimitAmt { get; set; }
public bool? IsPreVisitSch { get; set; }
public DateTime? PreVisitSchDate { get; set; }
public string? PreVisitSchTime { get; set; }
public bool? MoniterBwUsage { get; set; }
public int? BwWarnLimit { get; set; }
public string? DslaccountId { get; set; }
public string? BellGisId { get; set; }
public string? DslPassword { get; set; }
public bool? IsPasswordPassed { get; set; }
public bool? IsDslUserPassed { get; set; }
public string? CogecoId { get; set; }
public int? ServiceProviderId { get; set; }
public string? RogersId { get; set; }
public decimal? InternetSpeed { get; set; }
public bool? ModemRental { get; set; }
public bool? RouterRental { get; set; }
public bool? Atarental { get; set; }
public string? DslaccountDomain { get; set; }
[NotMapped]
public virtual ICollection<ServicePlanDetail> ServicePlanDetails { get; set; }
}
public class ServicePlanModel
{
public ServicePlanModel()
{
ServicePlanDiscounts = new List<ServicePlanDiscount>();
ServicePlanDetails = new List<ServicePlanDetail>();
}
[Key]
public Int64 PlanId { get; set; }
public Int64? ContractId { get; set; }
public int ResellerId { get; set; }
public Int64 PhoneId { get; set; }
public bool IsPhone { get; set; }
public Int32? OneTimeInvoiceId { get; set; }
public UInt16 Lines { get; set; }
public DateTime StartDate { get; set; }
public DateTime? EndDate { get; set; }
public Decimal MonthlyCharges { get; set; }
public Decimal OneTimeCharges { get; set; }
public String ContractType { get; set; }
public String CallerId { get; set; }
public Boolean IsActive { get; set; }
public Boolean IsRequest { get; set; }
public Boolean IsRejected { get; set; }
public Boolean IsApproved { get; set; }
public Boolean Charge911Tax { get; set; }
public DateTime ApprovedOn { get; set; }
public String ApprovedBy { get; set; }
public String Comments { get; set; }
public String ContractTerms { get; set; }
public String AdditionalDetails { get; set; }
public String VideoTronId { get; set; }
public String Zone { get; set; }
public String PreviousProvider { get; set; }
public String RequestType { get; set; }
public String NewValue { get; set; }
public DateTime? RequestDate { get; set; }
public String RequestedBy { get; set; }
//public PhoneNumber PhoneNumber { get; set; }
public List<ServicePlanDetail> ServicePlanDetails { get; set; }
public List<ServicePlanDiscount> ServicePlanDiscounts { get; set; }
public bool IsLandLinePlan
{
get
{
if (ServicePlanDetails != null)
{
return ServicePlanDetails.Any(spd => new String[] { "landline-r", "landline-b", "plan_10103", "plan_10104", "plan_10105" }.Contains(spd.ServiceCode));
}
return false;
}
}
public String ServicePlanName
{
get
{
if (ServicePlanDetails != null && ServicePlanDetails.Count > 0)
{
var plan = ServicePlanDetails.SingleOrDefault(spd => spd.IsPlan);
if (plan != null)
{
if (IsPhone)
{
return String.Format("{0} ({3}) ({1} x {2})", plan.ServiceTitle, plan.UnitPrice.ToString("N2"), plan.Quantity, PhoneId.ToString("###-###-####"));
}
return String.Format("{0} ({1} x {2})", plan.ServiceTitle, plan.UnitPrice.ToString("N2"), plan.Quantity);
}
}
return String.Empty;
}
}
public String MonthlyChargesDetails
{
get
{
if (ServicePlanDetails != null && ServicePlanDetails.Count > 0)
{
var items = ServicePlanDetails.Where(spd => spd.IsPlan == false & spd.UnitPrice > 0 & spd.ServiceType.Equals(Constants.SERVICE_TYPE_MONTHLY)).ToList();
var details = new StringBuilder();
foreach (var spd in items)
{
details.Append(String.Format("{0} ({1} x {2}) ", spd.ServiceTitle, spd.UnitPrice.ToString("N2"),
spd.Quantity));
}
return details.ToString();
}
return String.Empty;
}
}
//public String OnetimeChargesDetails
//{
//    get
//    {
//        if (ServicePlanDetails != null && ServicePlanDetails.Count > 0)
//        {
//            var items = ServicePlanDetails.Where(spd => spd.IsPlan == false & spd.UnitPrice > 0 & spd.ServiceType.Equals(Constants.SERVICE_TYPE_ONETIME)).ToList();
//            var details = new StringBuilder();
//            foreach (var spd in items)
//            {
//                details.Append(String.Format("{0} ({1} x {2}) ", spd.ServiceTitle, spd.UnitPrice.ToString("N2"),
//                                             spd.Quantity));
//            }
//            return details.ToString();
//        }
//        return String.Empty;
//    }
//}
public List<ServicePlanDetail> OnetimeChargesDetails
{
get
{
if (ServicePlanDetails != null && ServicePlanDetails.Count > 0)
{
return ServicePlanDetails.Where(spd => spd.IsPlan == false & spd.ServiceType.Equals(Constants.SERVICE_TYPE_ONETIME)).ToList();
}
return null;
}
}
public List<ServicePlanDetail> FreeServicesDetails
{
get { return ServicePlanDetails != null ? ServicePlanDetails.Where(s => s.UnitPrice == 0 && !s.ServiceType.Equals("month")).ToList() : null; }
}
public List<ServicePlanDetail> DiscountedServicesDetail
{
get
{
return ServicePlanDetails != null ?
ServicePlanDetails.Where(s => s.ResellerService != null && s.UnitPrice < s.ResellerService.SuggestedPrice && !s.ServiceType.Equals("month")).ToList() : null;
}
}
public string Modem_MAC { get; set; }
public string TrackingNumber { get; set; }
}

我试着调试，但是找不到错误。

Answer 1

看一下AutoMapperMappingException的源代码。在调试器下可以检查异常的许多属性。

From the source…

public TypePair? Types { get; set; }
public TypeMap TypeMap { get; set; }
public MemberMap MemberMap { get; set; }

这些属性用于创建Message属性的字符串。

如果由于某些原因不能给你足够的信息，一个方法更密集和半破坏性的方法(备份你的源)是从源/目标类型中删除一半的属性，看看错误是否仍然发生。如果是，再切一半，如果不是，取其他属性，再试一次。

基本上，你是在做一个二分搜索来缩小问题的范围，直到它变得明显。