没有在类型上使用'Autofac.Core.Activators.Reflection.DefaultConstructorFinder'找到的构造函数 [英] None of the constructors found with 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' on type

问题描述

我已经在SO上阅读了许多有关此问题的问题，但我无法弄清楚实施中存在的问题.

I have read many questions about this problem on SO but I could not figure out what is the issue with my implementation.

我遇到以下异常:

在类型为"SampleAuthTemplate.Domain.Entities.Core.Repositories.Concrete.EntityRepository`1 [SampleAuthTemplate.Domain.Entities.Order]"上找不到与'Autofac.Core.Activators.Reflection.DefaultConstructorFinder'相同的构造函数用可用的服务和参数调用: ↵无法解析构造函数'Void .ctor(SampleAuthTemplate.Domain.Entities.Core.EntitiesContext)'的参数'SampleAuthTemplate.Domain.Entities.Core.EntitiesContext objectsContext'."

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:

Following is the AutoFac registrations:

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EntitiesContext类:

and EntitiesContext class:

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.

推荐答案

注入站点需要EntitiesContext，但您仅将其注册为IdentityDbContext<ApplicationUser>.

The injection site requires an EntitiesContext, but you only registered it for IdentityDbContext<ApplicationUser>.

尝试一下:

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

这篇关于没有在类型上使用'Autofac.Core.Activators.Reflection.DefaultConstructorFinder'找到的构造函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！