Question

我正在尝试在我的应用程序中使用具有Autofac依赖性的SignalR，我已经成功注册了依赖项，但是在运行时它导致SignalR dyanmic生成的文件集线器丢失的错误，没有我无法做任何事情。我搜索过互联网但找不到任何解决方案。请帮忙。

配置类：

[assembly: WebActivatorEx.PreApplicationStartMethod(typeof(IocConfig), "RegisterDependencies")]

namespace Rental.Bootstrapper
{
    public class IocConfig
    {
        public static void RegisterDependencies()
        {
            var builder = new ContainerBuilder();
            const string nameOrConnectionString = "name=DefaultConnection";
            builder.RegisterControllers(typeof(MvcApplication).Assembly);
            builder.RegisterApiControllers(typeof(WebApiConfig).Assembly);
            builder.RegisterHubs(typeof(RentalHub).Assembly);
            //builder.RegisterInstance(typeof(Startup));
            builder.RegisterModule<AutofacWebTypesModule>();
            builder.RegisterGeneric(typeof(EntityRepository<>)).As(typeof(IRepository<>)).InstancePerHttpRequest();
            builder.RegisterGeneric(typeof(Service<>)).As(typeof(IService<>)).InstancePerHttpRequest();
            builder.RegisterType(typeof(UnitOfWork)).As(typeof(IUnitOfWork)).InstancePerHttpRequest();
            builder.Register<IEntitiesContext>(b =>
            {
                var logger = b.Resolve<ILogger>();
                var context = new RentalContext(nameOrConnectionString, logger);
                return context;
            }).InstancePerHttpRequest();
            builder.Register(b => NLogLogger.Instance).SingleInstance();
            builder.RegisterModule(new IdentityModule());

            var container = builder.Build();

            DependencyResolver.SetResolver(new Autofac.Integration.Mvc.AutofacDependencyResolver(container));
            GlobalConfiguration.Configuration.DependencyResolver =
                 new AutofacWebApiDependencyResolver(container);

            var signalRDependencyResolver = new Autofac.Integration.SignalR.AutofacDependencyResolver(container);
            GlobalHost.DependencyResolver = signalRDependencyResolver;                                  
        }
    }
}

Answer 1

我怀疑这根本不是Autofac问题。我还假设您使用MVC4，默认情况下使用Owin。 Owin有一个启动类，必须注册所有中间件和扩展。通常，这是一个Startup.cs类，它至少是SignalR所需的类，包含：

using Microsoft.AspNet.SignalR;
using Microsoft.Owin;
using Owin;

[assembly: OwinStartup(typeof(Startup))]
namespace MyNamepace
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            app.MapSignalR(new HubConfiguration
            {
                EnableDetailedErrors = true
            });
        }
    }
}

如果你看一下MapSignalR方法，你会发现它注册了“/ signalr”路由，如果我理解你的问题，这正是你所缺少的：

/// <summary>
/// Maps SignalR hubs to the app builder pipeline at "/signalr".
/// 
/// </summary>
/// <param name="builder">The app builder</param><param name="configuration">The <see cref="T:Microsoft.AspNet.SignalR.HubConfiguration"/> to use</param>
public static IAppBuilder MapSignalR(this IAppBuilder builder, HubConfiguration configuration)
{
  return OwinExtensions.MapSignalR(builder, "/signalr", configuration);
}

Autofac SignalR文档 http://jsfiddle.net/dreamweiver/bp0x1yc4/11/，我强烈建议您查看。它有一个完整的startup.cs文件代码，包括Autofac容器初始化，所有注册和SignalR的Owin相关代码。

无法在Autofac中加载SignalR hub脚本

1 个答案: