Autofac - Błąd rejestracji auto: Brak konstruktorów można znaleźć w „flag Publicznych wiążące”

Question

To jest moje Global.asax.cs

public void RegisterContainersUsingAutofac() 
    { 
     //http://elegantcode.com/2009/01/07/ioc-libraries-compared/ 
     //http://www.codeproject.com/Articles/25380/Dependency-Injection-with-Autofac 
     //https://code.google.com/p/autofac/ 
     //http://api.autofac.org/ 
     var builder = new ContainerBuilder(); 
     builder.RegisterModelBinders(Assembly.GetExecutingAssembly()); 
     builder.RegisterModelBinderProvider(); 
     //builder.RegisterType<AuthenticationService>().As<IAuthenticationService>(); 
     builder.RegisterControllers(typeof(MvcApplication).Assembly); 

     //builder.RegisterAssemblyTypes(typeof(SecurityService).Assembly). 
     //  Where(t => t.Name.EndsWith("Service")).AsImplementedInterfaces().InstancePerHttpRequest(); 
     builder.RegisterType(typeof(UnitOfWork)).As(typeof(IUnitOfWork)).InstancePerLifetimeScope() 
      .OnRelease(x =>{((IUnitOfWork)x).Commit();}); 

     builder.RegisterAssemblyTypes(typeof(UserRepository).Assembly).Where(t => t.Name.EndsWith("Repository")).AsImplementedInterfaces(); 
     builder.RegisterAssemblyTypes(typeof(SecurityService).Assembly).Where(t => t.Name.EndsWith("Service")).AsImplementedInterfaces(); 

     IContainer container = builder.Build(); 
     DependencyResolver.SetResolver(new AutofacDependencyResolver(container)); 
    } 

i mam następujący błąd: Brak konstruktorzy typu ' AppBase.Service.UserService "można znaleźć za pomocą" Public binding flags ".

Zarejestrowałem zaimplementowane interfejsy repozytoriów i usług, ale dokąd się pomyliłem? Łamie się na następujące.

To mój userService

public interface IUserService 
{ 
    int Login(string userNameOrEmail, string password, out int errorcode, out int timeout); 
    bool Register(string userName, string password, string email, string country, string language, out int errorCode); 

    bool Register(User user, out int errorCode); 
    bool ResetPassword(string username, string email, string oldPassword, string newPassword, out int errorCode); 

    void DeleteUser(string userName); 
} 
public class UserService : IUserService 
{ 
     private readonly IUserRepository userRepository; 
    private UserService(IUserRepository _userRepository) 
    { 
     userRepository = _userRepository; 

    } 
    //other methods ... 

} 

To jest mój błąd:

[DependencyResolutionException: No constructors on type 'AppBase.Service.UserService' can be found with 'Public binding flags'.] 
Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context, IEnumerable`1 parameters) +261 
Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable`1 parameters) +91 
Autofac.Core.Resolving.InstanceLookup.Execute() +135 
Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable`1 parameters) +434 
Autofac.Core.Resolving.InstanceLookup.ResolveComponent(IComponentRegistration registration, IEnumerable`1 parameters) +61 
Autofac.Core.Activators.Reflection.<>c__DisplayClass2.<CanSupplyValue>b__0() +68 
Autofac.Core.Activators.Reflection.ConstructorParameterBinding.Instantiate() +201 
      Autofac.Core.Activators.Reflection.ReflectionActivator.ActivateInstance(IComponentContext context, IEnumerable`1 parameters) +499 
Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable`1 parameters) +91 
Autofac.Core.Resolving.InstanceLookup.Execute() +135 
Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable`1 parameters) +434 
Autofac.Core.Resolving.ResolveOperation.ResolveComponent(IComponentRegistration registration, IEnumerable`1 parameters) +52 
Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable`1 parameters) +115 
Autofac.Core.Lifetime.LifetimeScope.ResolveComponent(IComponentRegistration registration, IEnumerable`1 parameters) +300 
Autofac.ResolutionExtensions.TryResolveService(IComponentContext context, Service service, IEnumerable`1 parameters, Object& instance) +103 
Autofac.ResolutionExtensions.ResolveOptionalService(IComponentContext context, Service service, IEnumerable`1 parameters) +218 
Autofac.ResolutionExtensions.ResolveOptional(IComponentContext context, Type serviceType, IEnumerable`1 parameters) +64 
Autofac.ResolutionExtensions.ResolveOptional(IComponentContext context, Type serviceType) +43 
Autofac.Integration.Mvc.AutofacDependencyResolver.GetService(Type serviceType) +49 
System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +51 

[InvalidOperationException: An error occurred when trying to create a controller of type 'AppBase.Web.Controllers.AccountController'. Make sure that the controller has a parameterless public constructor.] 
System.Web.Mvc.DefaultControllerActivator.Create(RequestContext requestContext, Type controllerType) +182 
System.Web.Mvc.DefaultControllerFactory.GetControllerInstance(RequestContext requestContext, Type controllerType) +80 
System.Web.Mvc.DefaultControllerFactory.CreateController(RequestContext requestContext, String controllerName) +74 
System.Web.Mvc.MvcHandler.ProcessRequestInit(HttpContextBase httpContext, IController& controller, IControllerFactory& factory) +232 
System.Web.Mvc.<>c__DisplayClass6.<BeginProcessRequest>b__2() +49 
System.Web.Mvc.<>c__DisplayClassb`1.<ProcessInApplicationTrust>b__a() +13 
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7 
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22 
    System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Func`1 func) +124 
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +98 
System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContext httpContext, AsyncCallback callback, Object state) +50 
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, Object extraData) +16 
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8968180 
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184 

Answer 1

Nie jestem pewien, dlaczego UserService posiada prywatny konstruktor. Czy istnieje ku temu powód?

Definiując konstruktora, domyślny konstruktor public UserService() nie jest już generowany.

Autofac wstrzyknie tylko do publicznych konstruktorów, których teraz nie masz. Powinien działać, jeśli zmienisz go na publiczny.

Answer 2

@HackedByChinese odpowiedź jest poprawna.

Re-sharper zasugerował, żebym zrobił klasę w moim streszczeniu warstwy usług. Zapobiega to także generowaniu domyślnego publicznego konstruktora. To mnie trochę podsyciło, więc pomyślałem, że może pomóc komuś innemu.