Automapper - 从集合中设置地图<double>失败

问题描述 投票：0回答：3

我有一个在 v10 版本上运行的 Automapper 设置，但自从我将其更新到最新的 v11 后，它就不再工作了。我不知道可能是什么问题。源文件和目标文件都是相似的。希望有人能帮助我。

automapper启动时弹出的消息是

Incorrect number of arguments supplied for call to method Rig.Commercial.Reservation.Contract.V1.Generic.GeoJson.GeojsonPoint get_Item(Int32)' (Parameter 'property')

这是我的个人资料中的地图设置： 

CreateMap<GeojsonPoint, Contract.V1.Generic.GeoJson.GeojsonPoint>().ReverseMap();

对象：

来源

    /// <summary>Geojson Coordinate</summary>
    [System.CodeDom.Compiler.GeneratedCode("NJsonSchema", "10.5.2.0 (Newtonsoft.Json v13.0.0.0)")]
    public partial class GeojsonPoint : System.Collections.ObjectModel.Collection<double>
    {
    
    }

目的地

/// <summary>
///  GeoJson coordinate
/// </summary>
[GeneratedCode("NJsonSchema", "10.5.2.0 (Newtonsoft.Json v11.0.0.0)")]
public class GeojsonPoint : Collection<double>
{
}

堆栈跟踪

at System.Linq.Expressions.Expression.Property(Expression expression, PropertyInfo property)
   at AutoMapper.Execution.TypeMapPlanBuilder.CreatePropertyMapFunc(MemberMap memberMap, Expression destination, MemberInfo destinationMember)
   at AutoMapper.Execution.TypeMapPlanBuilder.CreateAssignmentFunc(Expression createDestination)
   at AutoMapper.Execution.TypeMapPlanBuilder.CreateMapperLambda(HashSet`1 typeMapsPath)
   at AutoMapper.TypeMap.Seal(IGlobalConfiguration configurationProvider, HashSet`1 typeMapsPath)
   at AutoMapper.MapperConfiguration.Seal()
   at AutoMapper.MapperConfiguration..ctor(MapperConfigurationExpression configurationExpression)
   at Microsoft.Extensions.DependencyInjection.ServiceCollectionExtensions.<>c.<AddAutoMapperClasses>b__12_2(IServiceProvider sp)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite callSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.CreateServiceAccessor(Type serviceType)
   at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.Extensions.DependencyInjection.ServiceCollectionExtensions.<>c.<AddAutoMapperClasses>b__12_3(IServiceProvider sp)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass2_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetService[T](IServiceProvider provider)
   at Rig.Commercial.Reservation.Startup.Configure(IApplicationBuilder app, IWebHostEnvironment env, IApiVersionDescriptionProvider apiVersionDescriptionProvider, ILogger logger) in C:\9292 Source\Git\Rig.Commercial.Reservation\Rig.Commercial.Reservation\Startup.cs:line 117
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.<Build>b__0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass15_0.<UseStartup>b__1(IApplicationBuilder app)
   at Microsoft.ApplicationInsights.AspNetCore.ApplicationInsightsStartupFilter.<>c__DisplayClass2_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.<Configure>g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
   at Microsoft.Extensions.DependencyInjection.AutoRegisterMiddleware.<>c__DisplayClass4_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Server.IIS.Core.IISServerSetupFilter.<>c__DisplayClass2_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.WebTools.BrowserLink.Net.HostingStartup.<>c__DisplayClass1_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Watch.BrowserRefresh.HostingStartup.<>c__DisplayClass1_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.GenericWebHostService.<StartAsync>d__37.MoveNext()
c# .net automapper .net-6.0
3个回答
7
投票

它崩溃的原因是版本 11 中的一个重大更改：

C# 索引器（Item 属性） 这些过去默认情况下会被忽略，但这很昂贵，而且大多数类型都没有它们。所以你必须明确地忽略它们。全局，使用 ShouldMapProperty 或 GlobalIgnores，或每个成员。

这意味着集合“Item”的内部属性会自动添加到您的映射中。您可以通过在映射中添加 

.ForMember("Item", opt => opt.Ignore());
来修复此问题。

在您的情况下，您的映射将是：

   CreateMap<GeojsonPoint, Contract.V1.Generic.GeoJson.GeojsonPoint()
     .ForMember("Item", opt => opt.Ignore())
     .ReverseMap();
0
投票

我遇到了这个问题，但它抱怨 lambda 表达式参数。问题最终是我的一个属性没有其类型的有效地图。

我有

class ClaimDto {
  public VehicleDto Vehicle { get; set; }
}

和

CreateMap<Models.xxx.Claim, ClaimDto>();

但是我没有

CreateMap<Vehicle, VehicleDto>();
0
投票

我的 .NET Core 2.2 应用程序具有列表映射，它在 .NET 7 中引发错误。删除它可以解决该错误

CreateMap<List<Reference>, List<ReferenceViewModel>>();
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