c# - 未找到类型为 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' 的构造函数

Question

我在 SO 上阅读了很多有关此问题的问题，但我无法弄清楚我的实现存在什么问题。

我遇到以下异常:

None of the constructors found with 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' on type 'SampleAuthTemplate.Domain.Entities.Core.Repositories.Concrete.EntityRepository`1[SampleAuthTemplate.Domain.Entities.Order]' can be invoked with the available services and parameters: ↵Cannot resolve parameter 'SampleAuthTemplate.Domain.Entities.Core.EntitiesContext entitiesContext' of constructor 'Void .ctor(SampleAuthTemplate.Domain.Entities.Core.EntitiesContext)'."

以下是 AutoFac 注册:

private static IContainer RegisterServices(ContainerBuilder builder)
        {
            builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
            // registration goes here
            builder.RegisterType<EntitiesContext>().As<IdentityDbContext<ApplicationUser>>().InstancePerApiRequest();
            builder.RegisterGeneric(typeof(EntityRepository<>)).As(typeof(IEntityRepository<>)).InstancePerApiRequest();
            //builder.RegisterGeneric(typeof(AuthRepository<>)).As(typeof(IAuthRepository<>)).InstancePerApiRequest();

            builder.RegisterType<AuthRepository>().As<IAuthRepository>().InstancePerApiRequest();

            builder.RegisterType<OrderService>().As<IOrderService>().InstancePerApiRequest();
            return builder.Build();
        }

和EntityContext类:

public class EntitiesContext : IdentityDbContext<ApplicationUser>
    {
        public EntitiesContext(): base("SampleApp")
        {
        }

        public IDbSet<Order> Orders {get;set;}
        public IDbSet<OrderDetail> OrderDetails { get; set; }
    }

请指导我。

谢谢。

Answer 1

注入(inject)部位需要 EntitiesContext ，但您只注册了IdentityDbContext<ApplicationUser> .

试试这个:

    builder.RegisterType<EntitiesContext>().AsSelf()
           .As<IdentityDbContext<ApplicationUser>>().InstancePerApiRequest();