ActivationException khi sử dụng ToFactory trong Ninject

Question

Khi tôi cố gắng sử dụng ToFactory trong Ninject, tôi nhận được Ninject.ActivationException

var test = new StandardKernel(); 
test.Bind<IFoo>().To<Foo>(); 
test.Bind<IFooFactory>().ToFactory(); 
var factory = test.Get<IFooFactory>(); 
var foo = factory.GetFoo();   //<--Ninject.ActivationException 

nhà máy:

public interface IFooFactory 
{ 
    IFoo GetFoo(); 
} 

Trường hợp ngoại lệ:

Ninject.ActivationException was unhandled 
    Message=Error activating IFoo 
No matching bindings are available, and the type is not self-bindable. 
Activation path: 
    1) Request for IFoo 

Suggestions: 
    1) Ensure that you have defined a binding for IFoo. 
    2) If the binding was defined in a module, ensure that the module has been loaded into the kernel. 
    3) Ensure you have not accidentally created more than one kernel. 
    4) If you are using constructor arguments, ensure that the parameter name matches the constructors parameter name. 
    5) If you are using automatic module loading, ensure the search path and filters are correct. 

    Source=Ninject 
    StackTrace: 
     at Ninject.KernelBase.Resolve(IRequest request) in c:\Projects\Ninject\ninject\src\Ninject\KernelBase.cs:line 359 
     at Ninject.ResolutionExtensions.GetResolutionIterator(IResolutionRoot root, Type service, Func`2 constraint, IEnumerable`1 parameters, Boolean isOptional, Boolean isUnique) in c:\Projects\Ninject\ninject\src\Ninject\Syntax\ResolutionExtensions.cs:line 263 
     at Ninject.ResolutionExtensions.Get(IResolutionRoot root, Type service, String name, IParameter[] parameters) in c:\Projects\Ninject\ninject\src\Ninject\Syntax\ResolutionExtensions.cs:line 164 
     at Ninject.Extensions.Factory.Factory.InstanceResolver.Get(Type type, String name, Func`2 constraint, ConstructorArgument[] constructorArguments, Boolean fallback) in c:\Projects\Ninject\ninject.extensions.factory\src\Ninject.Extensions.Factory\Factory\InstanceResolver.cs:line 75 
     at Ninject.Extensions.Factory.StandardInstanceProvider.GetInstance(IInstanceResolver instanceResolver, MethodInfo methodInfo, Object[] arguments) in c:\Projects\Ninject\ninject.extensions.factory\src\Ninject.Extensions.Factory\Factory\StandardInstanceProvider.cs:line 78 
     at Ninject.Extensions.Factory.FactoryInterceptor.Intercept(IInvocation invocation) in c:\Projects\Ninject\ninject.extensions.factory\src\Ninject.Extensions.Factory\Factory\FactoryInterceptor.cs:line 57 
     at Castle.DynamicProxy.AbstractInvocation.Proceed() 
     at Castle.Proxies.IFooFactoryProxy.GetFoo() 

Answer 1

naming of your method is triggering a convention such that the resulting generated factory is requesting an IFoo named "Foo" nhưng cấu hình chưa đăng ký dịch vụ loại đó theo tên đó.