這件事需要我一個星期的時間我已經做了很多方法來找到解決方案mvc 與 autofac 完全集成，但 web api NO 和 NO！:-(這是我的代碼： AutofacDi public static class AutofacDi{    public static ValueTuple<IContainer, HttpConfiguration> Initialize()    {        var assembly = Assembly.GetExecutingAssembly();        var builder = new ContainerBuilder();        var config = GlobalConfiguration.Configuration;        builder.RegisterControllers(assembly);        builder.RegisterApiControllers(assembly).PropertiesAutowired();        builder.RegisterHttpRequestMessage(config);        builder.RegisterAssemblyModules(assembly);        builder.RegisterAssemblyTypes(assembly).PropertiesAutowired();        builder.RegisterFilterProvider();        builder.RegisterWebApiFilterProvider(config);        builder.RegisterModelBinders(assembly);        builder.RegisterWebApiModelBinderProvider();        builder.RegisterModelBinderProvider();        builder.RegisterModule<AutofacWebTypesModule>();        builder.RegisterSource(new ViewRegistrationSource());        builder.RegisterType<T4MVC.Dummy>().AsSelf();        builder.RegisterType<FoodDbContext>()            .As<IUnitOfWork>()            .InstancePerLifetimeScope();        builder.Register(context => (FoodDbContext)context.Resolve<IUnitOfWork>())            .As<FoodDbContext>()            .InstancePerLifetimeScope();        builder.RegisterType<ApplicationDbContext>().As<DbContext>().InstancePerLifetimeScope();        builder.RegisterType<UserStore<ApplicationUser>>().As<IUserStore<ApplicationUser>>();        builder.RegisterType<ApplicationUserManager>();        builder.RegisterType<ApplicationSignInManager>();        builder.Register(c => new IdentityFactoryOptions<ApplicationUserManager>()        {            DataProtectionProvider = new DpapiDataProtectionProvider("FoodBaMa")        });