Autofac仅适用于控制器，而不适用于引用的类库？

Question

我已经阅读了有关这方面的一些文章，现在让Autofac使用MVC6的预览版本并向我的控制器注入一个服务！ Yaaay！

然而，我还在服务中添加了一个注入（这是一个nuget类库），所有注册都在StartUp.cs中按照建议注册。它只是不起作用！

与将服务注入控制器的代码完全相同，但不工作，它按预期注入服务，但是在服务中调用注入的repo的下一行只会获得对象引用错误。

"dependencies": {
    "Microsoft.CSharp": "4.0.0-beta-23019",
    "Autofac": "4.0.0-beta6-110",
    "Autofac.Framework.DependencyInjection": "4.0.0-beta6-110",
    "Microsoft.Framework.DependencyInjection.Abstractions": "1.0.0-beta6",
    "SceneStealer.Services.Interfaces": { },
    "SceneStealer.Models": { },
    "SceneStealer.Data": { },
    "SceneStealer.Data.Interfaces": { },
    "System.Collections": "4.0.10-beta-23019",
    "System.Linq": "4.0.0-beta-23019",
    "System.Runtime": "4.0.10-beta-23019",
    "System.Threading": "4.0.10-beta-23019"
},

public class AutofacModule : Module
    {
        protected override void Load(ContainerBuilder builder)
        {
            builder
                .Register(c => new ConferenceService())
                .As<IConferenceService>()
                .InstancePerLifetimeScope();
            builder.Register(c => new ConferenceRepo())
                .As<IConferenceRepo>()
                .InstancePerLifetimeScope();


        }
    }

 public IServiceProvider ConfigureServices(IServiceCollection services)
        {
            // Add Application Insights data collection services to the services container.
            services.AddApplicationInsightsTelemetry(Configuration);

            services.AddMvc();
            // Uncomment the following line to add Web API services which makes it easier to port Web API 2 controllers.
            // You will also need to add the Microsoft.AspNet.Mvc.WebApiCompatShim package to the 'dependencies' section of project.json.
            // services.AddWebApiConventions();#services
            //Autofac config

            services.AddMvc();

            // Create the Autofac container builder.
            var builder = new ContainerBuilder();
            // Add any Autofac modules or registrations.
            builder.RegisterModule(new AutofacModule());
            // Populate the services.

            builder.Populate(services);
            // Build the container.
            var container = builder.Build();

            // Resolve and return the service provider.
            return container.Resolve<IServiceProvider>();
        }