c# - NancyFx 将接口(interface)传递给模块构造函数导致错误

Question

当我将接口(interface)传递到我的模块构造函数时，它会导致错误:无法解析类型:System.Web.HttpContextBase。以下是模块代码:

public class LeaderboardModule : NancyModule
{
    private readonly IUserService _userService;

    public LeaderboardModule(IUserService userService)
    {
        _userService = userService;

        Get["/"] = _ => View["Index"];

        Get["/NewUser"] = _ => View["NewUser.cshtml"];

        Post["/NewUser"] = _ => View["NewUser.cshtml"];

        Get["/UserList"] = _ =>
        {
            var userList = _userService.GetUsers();

            return View["UserList.cshtml", userList];
        };
    }
}

这是堆栈跟踪:

[TinyIoCResolutionException: Unable to resolve type: System.Web.HttpContextBase]
    Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration,     NamedParameterOverloads parameters, ResolveOptions options) +1940
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType,     ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +774

[TinyIoCResolutionException: Unable to resolve type: Metro.Leaderboard.Data.JsonService]
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType,   ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +965
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, ResolveOptions options) +99
   Nancy.TinyIoc.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container,   NamedParameterOverloads parameters, ResolveOptions options) +213
   Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options) +225
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType,     ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +774

[TinyIoCResolutionException: Unable to resolve type: Metro.Leaderboard.Business.UserService]
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +965
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, ResolveOptions options) +99
   Nancy.TinyIoc.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container,    NamedParameterOverloads parameters, ResolveOptions options) +213
   Nancy.TinyIoc.SingletonFactory.GetFactoryForChildContainer(Type type, TinyIoCContainer parent,   TinyIoCContainer child) +100
   Nancy.TinyIoc.TinyIoCContainer.GetParentObjectFactory(TypeRegistration registration) +141
   Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration,   NamedParameterOverloads parameters, ResolveOptions options) +712
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +774

[TinyIoCResolutionException: Unable to resolve type:     Metro.Leaderboard.Web.Modules.LeaderboardModule]
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +965
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, ResolveOptions options) +99
   Nancy.TinyIoc.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container, NamedParameterOverloads parameters, ResolveOptions options) +213
   Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options) +225
   Nancy.TinyIoc.TinyIoCContainer.<ResolveAllInternal>b__43(TypeRegistration registration) +91
   System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +145
   System.Linq.<CastIterator>d__b1`1.MoveNext() +85
   Nancy.Routing.RouteCache.BuildCache(IEnumerable`1 modules) +514
   Nancy.Routing.RouteCache..ctor(INancyModuleCatalog moduleCatalog, INancyContextFactory   contextFactory, IRouteSegmentExtractor routeSegmentExtractor, IRouteDescriptionProvider   routeDescriptionProvider, ICultureService cultureService) +189
   lambda_method(Closure , Object[] ) +221
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType,  ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +1100

    [TinyIoCResolutionException: Unable to resolve type: Nancy.Routing.RouteCache]
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +1178
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, ResolveOptions options) +99
   Nancy.TinyIoc.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container, NamedParameterOverloads parameters, ResolveOptions options) +213
   Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options) +225
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +774

[TinyIoCResolutionException: Unable to resolve type: Nancy.Routing.DefaultRouteResolver]
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +965
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, ResolveOptions options) +99
   Nancy.TinyIoc.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container, NamedParameterOverloads parameters, ResolveOptions options) +213
   Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options) +225
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +774

[TinyIoCResolutionException: Unable to resolve type: Nancy.Routing.DefaultRequestDispatcher]
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +965
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, ResolveOptions options) +99
   Nancy.TinyIoc.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container, NamedParameterOverloads parameters, ResolveOptions options) +213
   Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options) +225
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +774

[TinyIoCResolutionException: Unable to resolve type: Nancy.NancyEngine]
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, NamedParameterOverloads parameters, ResolveOptions options) +965
   Nancy.TinyIoc.TinyIoCContainer.ConstructType(Type requestedType, Type implementationType, ConstructorInfo constructor, ResolveOptions options) +99
   Nancy.TinyIoc.SingletonFactory.GetObject(Type requestedType, TinyIoCContainer container, NamedParameterOverloads parameters, ResolveOptions options) +213
   Nancy.TinyIoc.TinyIoCContainer.ResolveInternal(TypeRegistration registration, NamedParameterOverloads parameters, ResolveOptions options) +225
   Nancy.TinyIoc.TinyIoCContainer.Resolve(Type resolveType) +106
   Nancy.TinyIoc.TinyIoCContainer.Resolve() +112
   Nancy.DefaultNancyBootstrapper.GetEngineInternal() +56
   Nancy.Bootstrapper.NancyBootstrapperBase`1.SafeGetNancyEngineInstance() +61

[InvalidOperationException: Something went wrong when trying to satisfy one of the dependencies  during composition, make sure that you've registered all new dependencies in the container and      inspect the innerexception for more details.]
   Nancy.Bootstrapper.NancyBootstrapperBase`1.SafeGetNancyEngineInstance() +135
   Nancy.Bootstrapper.NancyBootstrapperBase`1.GetEngine() +113
   Nancy.Hosting.Aspnet.NancyHttpRequestHandler..cctor() +65

[TypeInitializationException: The type initializer for 'Nancy.Hosting.Aspnet.NancyHttpRequestHandler' threw an exception.]
   Nancy.Hosting.Aspnet.NancyHttpRequestHandler..ctor() +0

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0
   System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +113
    System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark) +232
    System.Activator.CreateInstance(Type type, Boolean nonPublic) +83
    System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark) +1136
    System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) +128
    System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture) +18
    System.Web.HttpRuntime.CreateNonPublicInstance(Type type, Object[] args) +60
    System.Web.Configuration.HandlerFactoryCache..ctor(String type) +46
    System.Web.HttpApplication.GetFactory(String type) +86
    System.Web.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +262
    System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

我最初的想法是这是 Nancy Bootstrap 的问题，所以我决定使用 StructureMap 但我仍然遇到同样的错误!对此的任何帮助将不胜感激

Answer 1

堆栈跟踪告诉您需要知道的一切——您的模块依赖于 UserService，而 UserService 依赖于 JsonService，后者依赖于 HttpContextBase，它无法解析(因为您不应该真正使用它，或者如果你这样做，你当然不应该将它作为构造函数依赖项)