Asp.net core 使用net core错误将信号器集线器注入控制器

我在我的asp net core web api中使用asp net core 2.0和新的SignalR 1.0.0-alpha1-final

我正在将SignalR hub LiveDataHandler注入我的控制器DataController

和配置到我的信号中心

public LiveDataHandler(IOptions<TheAppSettings> config)
{
    // need to use data repository
    this.dataRepository = new DataRepository(config.Value.db);
}

要设置信号器和设置，我需要

public void ConfigureServices(IServiceCollection services)
{
    // app settings to inject
    var theAppSettings = Configuration.GetSection("TheAppSettings");
    services.Configure<TheAppSettings>(theAppSettings);

    // Use WebSockets
    services.AddSignalR();

    ...
}

及

这个编译没有问题，信号器连接非常好，但是当我对我的控制器进行api调用时，我会得到一个错误，很抱歉整个跟踪

System.InvalidOperationException: Unable to resolve service for type 'LoadingScreen.API.Hubs.LiveDataHandler' while attempting to activate 'LoadingScreen.API.Controllers.DataController'.
   at Microsoft.Extensions.Internal.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy, Boolean isDefaultParameterRequired)
   at lambda_method(Closure , IServiceProvider , Object[] )
   at Microsoft.AspNetCore.Mvc.Controllers.ControllerActivatorProvider.<>c__DisplayClass4_0.<CreateActivator>b__0(ControllerContext controllerContext)
   at Microsoft.AspNetCore.Mvc.Controllers.ControllerFactoryProvider.<>c__DisplayClass5_0.<CreateControllerFactory>g__CreateController0(ControllerContext controllerContext)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeInnerFilterAsync>d__14.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.<InvokeNextResourceFilter>d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.<InvokeFilterPipelineAsync>d__17.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.<InvokeAsync>d__15.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Cors.Infrastructure.CorsMiddleware.<Invoke>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.<Invoke>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Hosting.Internal.RequestServicesContainerMiddleware.<Invoke>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.Frame`1.<ProcessRequestsAsync>d__2.MoveNext()

现在，从这个错误中，我可以大致推断在实例化时将signarhub注入控制器是有问题的，但我不确定如何修复这个问题。有什么办法可以让你自满吗

在使用Signal之前，我使用的是WebSosketManager库，它使用LiveDataHandler作为服务，注入工作没有任何问题：

app.UseWebSockets();
app.MapWebSocketManager("/liveData", serviceProvider.GetService<LiveDataHandler>());

---

因此，我仅假设Signal将以类似的方式工作…

根据提供的代码，您似乎忘记注册IOPS解析所需的依赖项：

public void ConfigureServices(IServiceCollection services)
{
   // Adds services required for using options.
    services.AddOptions();

    // app settings to inject
    var theAppSettings = Configuration.GetSection("TheAppSettings");
    services.Configure<TheAppSettings>(theAppSettings);

    ...
 }

app.UseWebSockets();
app.MapWebSocketManager("/liveData", serviceProvider.GetService<LiveDataHandler>());

public void ConfigureServices(IServiceCollection services)
{
   // Adds services required for using options.
    services.AddOptions();

    // app settings to inject
    var theAppSettings = Configuration.GetSection("TheAppSettings");
    services.Configure<TheAppSettings>(theAppSettings);

    ...
 }