我尝试实施here提议的集成。不幸的是我的中心方法没有调用。这个例外阻止了它：
发生了SimpleInjector.ActivationException。的HResult = -2146233088
消息=无法访问已处置的对象。 Objektname： ＆＃34; SimpleInjector.Scope＆＃34 ;. Source = SimpleInjector StackTrace： bei SimpleInjector.InstanceProducer.GetInstance（）InnerException： 的HResult = -2146232798 消息=无法访问已处置的对象。 Objektname：＆＃34; SimpleInjector.Scope＆＃34;。 对象名= SimpleInjector.Scope 来源= SimpleInjector 堆栈跟踪： bei SimpleInjector.Scope.ThrowObjectDisposedException（） bei SimpleInjector.Scope.RequiresInstanceNotDisposed（） bei SimpleInjector.Scope.GetInstance [TService，TImplementation]（ScopedRegistration2 注册） bei SimpleInjector.Scope.GetInstance [TService，TImplementation]（ScopedRegistration2 注册，范围范围） bei SimpleInjector.Advanced.Internal.LazyScopedRegistration2.GetInstance（范围） 范围） bei lambda_method（关闭） bei Glimpse.SimpleInjector.SimpleInjectorTab.CollectResolvedInstance（InitializationContext context，Func1 instanceProducer） bei SimpleInjector.Container。＆lt;＆gt; c__DisplayClass52_0.b__0（） bei SimpleInjector.InstanceProducer.GetInstance（） 的InnerException：
这个被抛出：
SimpleInjector.dll！SimpleInjector.InstanceProducer.GetInstance（）Unbekannt SimpleInjector.dll！SimpleInjector.Container.GetInstance（System.Type serviceType）Unbekannt idee5.Dispatcher.dll！SimpleInjector.SignalR.SimpleInjectorHubActivator.Create（Microsoft.AspNet.SignalR.Hubs.HubDescriptor描述符）Zeile 11 C＃ Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.DefaultHubManager.ResolveHub（string hubName）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.HubDispatcher.CreateHub（Microsoft.AspNet.SignalR.IRequest请求，Microsoft.AspNet.SignalR.Hubs.HubDescriptor描述符，字符串connectionId，Microsoft.AspNet.SignalR .Hubs.StateChangeTracker跟踪器，bool throwIfFailedToCreate）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.HubDispatcher.OnReceived（Microsoft.AspNet.SignalR.IRequest请求，字符串connectionId，字符串数据）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequestPostGroupRead.AnonymousMethod__7（）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.TaskAsyncHelper.FromMethod（System.Func func）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequestPostGroupRead.AnonymousMethod__6（字符串数据）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Transports.WebSocketTransport.OnMessage（string message）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.WebSockets.DefaultWebSocketHandler.OnMessage（string message）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.WebSockets.WebSocketHandler.ProcessWebSocketRequestAsync（System.Net.WebSockets.WebSocket webSocket，System.Threading.CancellationToken disconnectToken，System.Func＆gt; messageRetriever，object state）Unbekannt mscorlib.dll！System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.InvokeMoveNext（object stateMachine）Unbekannt mscorlib.dll！System.Threading.ExecutionContext.RunInternal（System.Threading.ExecutionContext executionContext，System.Threading.ContextCallback callback，object state，bool preserveSyncCtx）Unbekannt mscorlib.dll！System.Threading.ExecutionContext.Run（System.Threading.ExecutionContext executionContext，System.Threading.ContextCallback callback，object state，bool preserveSyncCtx）Unbekannt mscorlib.dll！System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run（）Unbekannt mscorlib.dll！System.Runtime.CompilerServices.AsyncMethodBuilderCore.OutputAsyncCausalityEvents.AnonymousMethod__0（）Unbekannt mscorlib.dll！System.Runtime.CompilerServices.AsyncMethodBuilderCore.ContinuationWrapper.Invoke（）Unbekannt mscorlib.dll！System.Runtime.CompilerServices.TaskAwaiter.OutputWaitEtwEvents.AnonymousMethod__0（）Unbekannt mscorlib.dll！System.Runtime.CompilerServices.AsyncMethodBuilderCore.ContinuationWrapper.Invoke（）Unbekannt mscorlib.dll！System.Threading.Tasks.SynchronizationContextAwaitTaskContinuation..cctor.AnonymousMethod__8_0（对象状态）Unbekannt System.Web.dll！System.Web.AspNetSynchronizationContext.Post.AnonymousMethod__0（）Unbekannt System.Web.dll！System.Web.Util.SynchronizationHelper.SafeWrapCallback（System.Action action）Unbekannt System.Web.dll！System.Web.Util.SynchronizationHelper.QueueAsynchronous.AnonymousMethod__0（System.Threading.Tasks.Task _）Unbekannt mscorlib.dll！System.Threading.Tasks.ContinuationTaskFromTask.InnerInvoke（）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.Execute（）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.ExecutionContextCallback（object obj）Unbekannt mscorlib.dll！System.Threading.ExecutionContext.RunInternal（System.Threading.ExecutionContext executionContext，System.Threading.ContextCallback callback，object state，bool preserveSyncCtx）Unbekannt mscorlib.dll！System.Threading.ExecutionContext.Run（System.Threading.ExecutionContext executionContext，System.Threading.ContextCallback callback，object state，bool preserveSyncCtx）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.ExecuteWithThreadLocal（ref System.Threading.Tasks.Task currentTaskSlot）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.ExecuteEntry（bool bPreventDoubleExecution）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem（）Unbekannt mscorlib.dll！System.Threading.ThreadPoolWorkQueue.Dispatch（）Unbekannt mscorlib.dll！System.Threading._ThreadPoolWaitCallback.PerformWaitCallback（）
另一个可疑的例外是：
SimpleInjector.ActivationException ist aufgetreten。 的HResult = -2146233088 Message = SchedulerHub注册为＆＃39;混合执行上下文范围/ Web请求＆＃39;生活方式，但实例是在混合执行上下文范围/ Web请求的上下文之外请求的。 来源= SimpleInjector 堆栈跟踪： bei SimpleInjector.Scope.GetScopelessInstance [TService，TImplementation]（ScopedRegistration`2 registration） InnerException：
这个被抛出：
SimpleInjector.dll！SimpleInjector.Scope.GetScopelessInstance（SimpleInjector.Lifestyles.ScopedRegistration registration）Unbekannt SimpleInjector.dll！SimpleInjector.Scope.GetInstance（SimpleInjector.Lifestyles.ScopedRegistration注册，SimpleInjector.Scope范围）Unbekannt SimpleInjector.dll！SimpleInjector.Advanced.Internal.LazyScopedRegistration.GetInstance（SimpleInjector.Scope scope）Unbekannt [Lightweightfunktion]
Glimpse.SimpleInjector.dll！Glimpse.SimpleInjector.SimpleInjectorTab.CollectResolvedInstance（SimpleInjector.Advanced.InitializationContext context，System.Func instanceProducer）Unbekannt SimpleInjector.dll！SimpleInjector.Container.ApplyResolveInterceptor.AnonymousMethod__0（）Unbekannt SimpleInjector.dll！SimpleInjector.InstanceProducer.GetInstance（）Unbekannt SimpleInjector.dll！SimpleInjector.Container.GetInstance（System.Type serviceType）Unbekannt idee5.Dispatcher.dll！SimpleInjector.SignalR.SimpleInjectorHubActivator.Create（Microsoft.AspNet.SignalR.Hubs.HubDescriptor描述符）Zeile 11 C＃ Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.DefaultHubManager.ResolveHub（string hubName）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.HubDispatcher.CreateHub（Microsoft.AspNet.SignalR.IRequest请求，Microsoft.AspNet.SignalR.Hubs.HubDescriptor描述符，字符串connectionId，Microsoft.AspNet.SignalR .Hubs.StateChangeTracker跟踪器，bool throwIfFailedToCreate）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.HubDispatcher.GetHubs.AnonymousMethod__39（Microsoft.AspNet.SignalR.Hubs.HubDescriptor descriptor）Unbekannt System.Core.dll！System.Linq.Enumerable.WhereSelectListIterator.MoveNext（）Unbekannt System.Core.dll！System.Linq.Enumerable.WhereEnumerableIterator.MoveNext（）Unbekannt mscorlib.dll！System.Collections.Generic.List.List（System.Collections.Generic.IEnumerable collection）Unbekannt System.Core.dll！System.Linq.Enumerable.ToList（System.Collections.Generic.IEnumerable source）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.HubDispatcher.ExecuteHubEvent（Microsoft.AspNet.SignalR.IRequest request，string connectionId，System.Func action）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Hubs.HubDispatcher.OnReconnected（Microsoft.AspNet.SignalR.IRequest request，string connectionId）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequestPostGroupRead.AnonymousMethod__5（）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.TaskAsyncHelper.FromMethod（System.Func func）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.PersistentConnection.ProcessRequestPostGroupRead.AnonymousMethod__4（）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Transports.ForeverTransport.ProcessReceiveRequest.AnonymousMethod__1c（）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Transports.ForeverTransport.ProcessMessages（Microsoft.AspNet.SignalR.Transports.ITransportConnection connection，System.Func initialize）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Transports.ForeverTransport.ProcessReceiveRequest（Microsoft.AspNet.SignalR.Transports.ITransportConnection connection）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Transports.ForeverTransport.ProcessRequestCore.AnonymousMethod__e（Microsoft.AspNet.SignalR.Transports.ForeverTransport t，Microsoft.AspNet.SignalR.Transports.ITransportConnection c）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.TaskAsyncHelper.FromMethod（System.Func func，System .__ Canon arg1，System .__ Canon arg2）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.TaskAsyncHelper.Then（System.Threading.Tasks.Task任务，System.Func后继者，Microsoft.AspNet.SignalR.Transports.ForeverTransport arg1，Microsoft.AspNet.SignalR .Transports.ITransportConnection arg2）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Transports.ForeverTransport.ProcessRequestCore（Microsoft.AspNet.SignalR.Transports.ITransportConnection connection）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Transports.WebSocketTransport.ProcessRequest.AnonymousMethod__2（Microsoft.AspNet.SignalR.Hosting.IWebSocket socket）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Owin.OwinWebSocketHandler.RunWebSocketHandler.AnonymousMethod__0（）Unbekannt mscorlib.dll！System.Runtime.CompilerServices.AsyncTaskMethodBuilder.Startc__DisplayClass1。＆lt; b__0＆gt; d__3 stateMachine）Unbekannt Microsoft.AspNet.SignalR.Core.dll！Microsoft.AspNet.SignalR.Owin.OwinWebSocketHandler.RunWebSocketHandler.AnonymousMethod__0（）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.InnerInvoke（）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.Execute（）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.ExecutionContextCallback（object obj）Unbekannt mscorlib.dll！System.Threading.ExecutionContext.RunInternal（System.Threading.ExecutionContext executionContext，System.Threading.ContextCallback callback，object state，bool preserveSyncCtx）Unbekannt mscorlib.dll！System.Threading.ExecutionContext.Run（System.Threading.ExecutionContext executionContext，System.Threading.ContextCallback callback，object state，bool preserveSyncCtx）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.ExecuteWithThreadLocal（ref System.Threading.Tasks.Task currentTaskSlot）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.ExecuteEntry（bool bPreventDoubleExecution）Unbekannt mscorlib.dll！System.Threading.Tasks.Task.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem（）Unbekannt mscorlib.dll！System.Threading.ThreadPoolWorkQueue.Dispatch（）Unbekannt mscorlib.dll！System.Threading._ThreadPoolWaitCallback.PerformWaitCallback（）Unbekannt
两者都被抓住了。而且我怀疑这似乎没有发生任何事情，我的集线器方法也没有被调用。
经过一些尝试错误的会话后，我最终得到了这个容器配置。
public static Container GetInitializeContainer(IAppBuilder app) {
// configure AutoMapper
MapperConfiguration mapperConfig = ConfigureMappings();
// Create the container as usual.
var container = new Container();
ScopedLifestyle hybrid = Lifestyle.CreateHybrid(
() => container.GetCurrentExecutionContextScope() != null,
new ExecutionContextScopeLifestyle(),
new WebRequestLifestyle());
container.Options.DefaultScopedLifestyle = hybrid;
// Registering the types
container.RegisterSingleton(() => mapperConfig.CreateMapper());
container.RegisterSingleton(app);
container.RegisterPerWebRequest<IUrlHelperProvider, UrlHelperProvider>();
// register the singleton services
container.RegisterSingleton<ICacheService>(new CacheService());
container.RegisterSingleton<ILoggingService, LoggingService>();
// register application services
// get the assembly containing the services
Assembly repositoryAssembly = typeof(CompanyService).Assembly;
// get the services namespace
string @namespace = typeof(CompanyService).Namespace;
// register all interfaces in the assembly besides the singletons
var registrations =
from type in repositoryAssembly.GetExportedTypes()
where type.Namespace == @namespace
where type.GetInterfaces().Any(i => i.Name.EndsWith(value: "Service") &&
i.Name != nameof(ICacheService) && i.Name != nameof(ILoggingService))
select new { Service = type.GetInterfaces().Single(i => i.Name.EndsWith(value: "Service")), Implementation = type };
foreach (var reg in registrations) {
container.Register(reg.Service, reg.Implementation, new WebRequestLifestyle());
}
container.RegisterPerWebRequest<ApplicationUserManager>();
container.RegisterPerWebRequest<IUserStore<IdentityUser, Guid>>(() => new UserStore());
container.RegisterInitializer<ApplicationUserManager>(manager => InitializeUserManager(manager, app));
// register the role manager
container.RegisterPerWebRequest<ApplicationRoleManager>();
container.RegisterPerWebRequest<IRoleStore<IdentityRole, Guid>>(() => new RoleStore());
container.RegisterInitializer<ApplicationRoleManager>(manager => InitializeRoleManager(manager));
container.Register<Hubs.SchedulerHub, Hubs.SchedulerHub>(Lifestyle.Scoped);
// register the sign in manager
container.RegisterPerWebRequest<ApplicationSignInManager>();
container.RegisterPerWebRequest(() => AdvancedExtensions.IsVerifying(container)
? new OwinContext(new Dictionary<string, object>()).Authentication
: HttpContext.Current.GetOwinContext().Authentication);
// Register all controllers and filters. Including those in MVC areas
container.RegisterMvcControllers();
container.RegisterMvcIntegratedFilterProvider();
// register OWIN
app.Use(async (context, next) => {
using (container.BeginExecutionContextScope()) {
CallContext.LogicalSetData(name: "IOwinContext", data: context);
await next();
}
});
container.RegisterSingleton<IOwinContextProvider>(new CallContextOwinContextProvider());
return container;
}
我的中心激活器：
public class SimpleInjectorHubActivator : IHubActivator {
public SimpleInjectorHubActivator(Container container) {
_container = container;
}
public IHub Create(HubDescriptor descriptor) {
return (IHub) _container.GetInstance(descriptor.HubType);
}
private readonly Container _container;
}
我的枢纽调度员：
public class SimpleInjectorHubDispatcher : HubDispatcher {
public SimpleInjectorHubDispatcher(Container container, HubConfiguration configuration)
: base(configuration) {
_container = container;
}
protected override Task OnConnected(IRequest request, string connectionId) {
return Invoke(() => base.OnConnected(request, connectionId));
}
protected override Task OnReceived(IRequest request, string connectionId, string data) {
return Invoke(() => base.OnReceived(request, connectionId, data));
}
protected override Task OnDisconnected(IRequest request, string connectionId,
bool stopCalled) {
return Invoke(() => base.OnDisconnected(request, connectionId, stopCalled));
}
protected override Task OnReconnected(IRequest request, string connectionId) {
return Invoke(() => base.OnReconnected(request, connectionId));
}
private async Task Invoke(Func<Task> method) {
using (_container.BeginExecutionContextScope())
await method();
}
private readonly Container _container;
}
如何防止此异常并调用我的集线器方法？
答案 0 :(得分：2)
从堆栈跟踪中我看到默认HubDispatcher被调用，而不是您的自定义SimpleInjectorHubDispatcher。这意味着不应用范围，这可能是您收到消息“在混合执行上下文范围/ Web请求的上下文之外请求实例”的原因。
您应该注册SimpleInjectorHubDispatcher，如下所示：
我认为错误在以下几行：
var dispatcher = new SimpleInjectorHubDispatcher(container, config);
config.Resolver.Register(typeof(HubDispatcher), dispatcher);
答案 1 :(得分：1)
感谢史蒂文斯的聊天支持和一些深挖，我发现了这个漏洞。我混淆了集线器的生活方式和使用过的服务。
困难的部分是收集有关静默失败的SignalR呼叫的任何细节。如果有其他人遇到这种情况，我想就如何收集更多信息分享两个提示：
这样你就可以掌握堆栈跟踪，内部异常等。否则你不会找到原因。 在我的情况下，我监控了SimpleInjector.ActivationException，Steven帮我找到了原因。