Question

Autofac注册：

builder.RegisterType<RelatedTransportMangerResolver>().AsSelf();
builder.Register(context => new MapperConfiguration(cfg =>
{
    cfg.AddProfile<AssetMapperProfile>();
})).AsSelf().SingleInstance();

builder.Register(c => c.Resolve<MapperConfiguration>().CreateMapper(c.Resolve))
.As<IMapper>()
.InstancePerLifetimeScope();

使用自定义值解析器的地图：

CreateMap<TrafficArea, TrafficAreaViewModel>()
            .ForMember(ta => ta.TransportManagers,
                opt => opt.MapFrom(ta =>
                    ta.TrafficAreaKeyContacts
                        .Where(kc => kc.KeyContactGroup.HasFlag(KeyContactGroup.TransportManager))
                        .Select(atr => atr.KeyContact)))
            .ForMember(ta => ta.RelatedTransportManagers,
                opt => opt.MapFrom<RelatedTransportMangerResolver>());

返回的错误是：

此解析操作已结束。使用lambda注册组件时，无法存储IComponentContext'c'参数到lambda。而是从'c'再次解析IComponentContext，或从基于Func <>的工厂解析以从中创建后续组件。

关于如何解决此错误的任何想法？

Answer 1

应该先多挖一点自己的东西...

如果有人遇到相同问题，请在此处修复：

builder.Register(c =>
{
    //This resolves a new context that can be used later.
    var context = c.Resolve<IComponentContext>();
    var config = context.Resolve<MapperConfiguration>();
    return config.CreateMapper(context.Resolve);
})
.As<IMapper>()
.InstancePerLifetimeScope();

Autofac / Automapper-自定义值解析器错误

1 个答案: