C# Can'；t创建控制器，依赖项注入

我有以下启动文件（Startup.cs）：

如您所见，我注册了autofac配置。我的autofac config的代码如下所示：（AutofacConfig.cs）

堆栈跟踪：

在 System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create（HttpRequestMessage 请求，HttpControllerDescriptor控制器描述符，类型 控制器类型）在 System.Web.Http.Controllers.HttpControllerDescriptor.CreateController（HttpRequestMessage （请求）在 System.Web.Http.Dispatcher.HttpControllerDispatcher.d_u15.MoveNext（） at System.Linq.Expressions.Expression.New（Type）at System.Web.Http.Internal.TypeActivator.Create[TBase]（类型 instanceType）在 System.Web.Http.Dispatcher.DefaultHttpControllerActivator.GetInstanceActivator（HttpRequestMessage 请求，类型controllerType，Func`1和activator）位于 System.Web.Http.Dispatcher.DefaultHttpControllerActivator.Create（HttpRequestMessage 请求，HttpControllerDescriptor控制器描述符，类型 控制器类型）

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我将Oauth与OWIN一起使用，我不知道它是autofac在基于OWIN的应用程序中的特殊实现

我的startup.cs看起来像这样，它可以工作：

public void Configuration(IAppBuilder app)
    {
        var builder = new ContainerBuilder();


        //AutofacConfig.RegisterIoc();
        HttpConfiguration config = new HttpConfiguration();

        builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
        var assemblies = BuildManager.GetReferencedAssemblies().Cast<Assembly>().Where(x => x.FullName.Contains("API")).ToArray();
        builder.RegisterAssemblyTypes(assemblies)
            .AsImplementedInterfaces()
            .InstancePerRequest();

        var container = builder.Build();
        config.DependencyResolver = new AutofacWebApiDependencyResolver(container);

        ConfigureOAuth(app); //This must come first before we load the WebApiConfig below.

        WebApiConfig.Register(config);
        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
        app.UseAutofacMiddleware(container);
        app.UseAutofacWebApi(config);
        app.UseWebApi(config);

    }

public void配置（IAppBuilder应用程序）
{
var builder=new ContainerBuilder（）；
//AutofacConfig.RegisterIoc（）；
HttpConfiguration config=新的HttpConfiguration（）；
RegisterAppController（Assembly.getExecutionGassembly（））；
var assemblies=BuildManager.getReferencedAssemblys（）.Cast

它说您需要一个无参数的公共构造函数。您需要
public DataController（）{…}
。我缺少什么吗？您必须在container
container.RegisterType（）上注册服务
你的IOC注册在哪里？@Div:No.我没有这样做，而是写var assemblies=BuildManager.getReferenceAssemblys（）.Cast（）.Where（x=>x.FullName.Contains（“API”）.ToArray（）；builder.RegisterAssemblyTypes（assemblies）.AsImplementedInterfaces（）.InstancePerRequest（）；@Progressive:它们在我的autfacconfig.cs中
 public class AutofacConfig
    {
        public static void RegisterIoc()
        {
            var builder = GetBuilder();
            var container = builder.Build();

            // Set dependency resolver for MVC
            //DependencyResolver.SetResolver(new AutofacWebApiDependencyResolver(container));

            // Set dependency resolver for Web API
            GlobalConfiguration.Configuration.DependencyResolver = new AutofacWebApiDependencyResolver(container);
        }

        public static ContainerBuilder GetBuilder()
        {
            var builder = new ContainerBuilder();
            builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
            //builder.RegisterFilterProvider();


            var assemblies = BuildManager.GetReferencedAssemblies().Cast<Assembly>().Where(x => x.FullName.Contains("API")).ToArray();
            builder.RegisterAssemblyTypes(assemblies)
                .AsImplementedInterfaces()
                .InstancePerRequest();

            return builder;
        }
    }

private readonly IItemModelService _itemModelService;

public DataController(IItemModelService itemModelService)
{
    this._itemModelService = itemModelService;
}

public void Configuration(IAppBuilder app)
    {
        var builder = new ContainerBuilder();


        //AutofacConfig.RegisterIoc();
        HttpConfiguration config = new HttpConfiguration();

        builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
        var assemblies = BuildManager.GetReferencedAssemblies().Cast<Assembly>().Where(x => x.FullName.Contains("API")).ToArray();
        builder.RegisterAssemblyTypes(assemblies)
            .AsImplementedInterfaces()
            .InstancePerRequest();

        var container = builder.Build();
        config.DependencyResolver = new AutofacWebApiDependencyResolver(container);

        ConfigureOAuth(app); //This must come first before we load the WebApiConfig below.

        WebApiConfig.Register(config);
        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);
        app.UseAutofacMiddleware(container);
        app.UseAutofacWebApi(config);
        app.UseWebApi(config);

    }