Autofac + SignalR

Question

我对autofac和singalR库都是全新的，所以请对我轻松点！我在bootstrapper中有下面的代码，它在没有signalR的情况下自行工作。

var builder = new ContainerBuilder(); 
builder.RegisterControllers(Assembly.GetExecutingAssembly()); 
builder.RegisterAssemblyTypes(Assembly.GetExecutingAssembly()).AsImplementedInterfaces(); 

builder.RegisterType<DatabaseFactory>().As<IDatabaseFactory>().InstancePerHttpRequest(); 
builder.RegisterType<UnitOfWork>().As<IUnitOfWork>().InstancePerHttpRequest(); 

builder.RegisterAssemblyTypes(typeof(adminRepository).Assembly).Where(t => t.Name.EndsWith("Repository")).AsImplementedInterfaces().InstancePerHttpRequest(); 

builder.RegisterAssemblyTypes(typeof(adminService).Assembly).Where(t => t.Name.EndsWith("Service")).AsImplementedInterfaces().InstancePerHttpRequest(); 

builder.RegisterFilterProvider(); 
IContainer container = builder.Build(); 

DependencyResolver.SetResolver(new Autofac.Integration.Mvc.AutofacDependencyResolver(container)); 

上面的代码工作得很好，但注册我的集线器后，下面的代码，它只是不起作用。

builder.RegisterType<Chat>().InstancePerLifetimeScope(); 

builder.RegisterFilterProvider(); 
IContainer container = builder.Build(); 

DependencyResolver.SetResolver(new Autofac.Integration.Mvc.AutofacDependencyResolver(container)); 

SignalR.IDependencyResolver resolver = new SignalR.Autofac.AutofacDependencyResolver(container); 
GlobalHost.DependencyResolver = resolver; 
RouteTable.Routes.MapHubs(resolver); 

我使用SignalR依赖解析器从这个结合Autofac（https://github.com/pszmyd/SignalR.Autofac）。

我有一个简单的枢纽这样，

public class Chat : Hub 
{ 
    private readonly IadminService adminService; 
    public Chat(IadminService adminService) 
    { 
     this.adminService = adminService; 
    } 

    public void Send(string message) 
    { 
     Clients.addMessage(message); 
    } 
} 

这是当我试图用DI到轮毂上，我得到了错误。

“没有范围与标签匹配的'httpRequest'从请求实例的范围中可见。”

不管我做什么，我似乎都无法使它工作，如果有人能告诉我上面的代码有什么问题，我将不胜感激。

非常感谢 利奥

Answer 1

设置DependencyResolver之后你还需要将它传递给MapHubs，那就是试试这个来代替：

GlobalHost.DependencyResolver = resolver; 

RouteTable.Routes.MapHubs(); 

我知道SignalR但从未使用Autofac但它可能是值得看的这些问题的答案对可能Autofac问题的详细信息：

How to resolve Autofac InstancePerHttpRequest

Autofac, ASP.NET MVC 3 httpRequest scope and AutoMapper: No scope with a Tag matching 'httpRequest' is visible

Answer 2

对于托管在IIS的ASP.NET应用程序中添加这的Application_Start：

var container = AutofacConfig.BuildContainer(); 
DependencyResolver.SetResolver(new AutofacDependencyResolver(container)); 
var signalRDependencyResolver = new SignalRAutofacDependencyResolver(container); 
// old SignalR 1.0 way - routes.MapHubs(signalRDependencyResolver); 
RouteTable.Routes.MapHubs(new HubConfiguration { Resolver = signalRDependencyResolver }); 

您可能会发现SignalRAutofacDependencyResolver here。

例毂注入ISecurity服务：

public class ExampleHub : Hub 
{ 
    private static int _count = 0; 

    private readonly ISecurity _security; 
    public ExampleHub(ISecurity security) 
    { 
     _security = security; 
    } 

    public void GetCount() 
    { 
     _count++; 
     Clients.All.SetCount(_count);   
    } 
} 

这也适用于SignalR self host release。只需使用像这样的启动类：

// These are static variables in Program.cs - Probably a better way to do this 
_container = AutofacConfig.BuildContainer(); 
_webServer = WebApp.Start<WebServerStartup>("http://localhost:8080"); 

public class WebServerStartup 
{ 
    private readonly SignalRAutofacDependencyResolver _signalRDependencyResolver; 

    public WebServerStartup() 
    { 
     _signalRDependencyResolver = new SignalRAutofacDependencyResolver(_container); 
    } 

    public void Configuration(IAppBuilder app) 
    { 
     app.MapSignalR(new HubConfiguration { Resolver = _signalRDependencyResolver }); 
    } 
}