HttpConfiguration.get_ServiceResolver() 丢失

我正在将 Ninject 与 MVC4 连接起来，并使其工作到尝试实际解决依赖关系的程度。但是，我收到以下异常：

找不到方法：“System.Web.Http.Services.DependencyResolver System.Web.Http.HttpConfiguration.get_ServiceResolver()”。

有人遇到过这个问题并有解决办法吗？

GlobalConfiguration.Configuration.ServiceResolver被替换为GlobalConfiguration.Configuration.DependencyResolver在RC。所以我猜你使用的 Ninject 包根本就不是为 RC 设计的。这是重大变化之一。

以下是使 Ninject 与 ASP.NET MVC 4 Web API RC 配合使用的步骤：

1. 使用空模板创建新的 ASP.NET MVC 4 应用程序

2. 声明一个接口：

   public interface IFoo
   {
       string GetBar();
   }
   

3. 然后是一个实现：

   public class Foo : IFoo
   {
       public string GetBar()
       {
           return "the bar";
       }
   }
   

4. 然后添加一个API控制器：

   public class ValuesController : ApiController
   {
       private readonly IFoo _foo;
       public ValuesController(IFoo foo)
       {
           _foo = foo;
       }
   
       public string Get()
       {
           return _foo.GetBar();
       }
   }
   

5. 安装Ninject.Mvc3NuGet 包（Install-Package Ninject.Mvc3)

6. 定义自定义 API 依赖解析器，如下所示这个要点 https://gist.github.com/2417226:

   public class NinjectDependencyScope : IDependencyScope
   {
       private IResolutionRoot resolver;
   
       internal NinjectDependencyScope(IResolutionRoot resolver)
       {
           Contract.Assert(resolver != null);
   
           this.resolver = resolver;
       }
   
       public void Dispose()
       {
           IDisposable disposable = resolver as IDisposable;
           if (disposable != null)
               disposable.Dispose();
   
           resolver = null;
       }
   
       public object GetService(Type serviceType)
       {
           if (resolver == null)
               throw new ObjectDisposedException("this", "This scope has already been disposed");
   
           return resolver.TryGet(serviceType);
       }
   
       public IEnumerable<object> GetServices(Type serviceType)
       {
           if (resolver == null)
               throw new ObjectDisposedException("this", "This scope has already been disposed");
   
           return resolver.GetAll(serviceType);
       }
   }
   
   public class NinjectDependencyResolver : NinjectDependencyScope, IDependencyResolver
   {
       private IKernel kernel;
   
       public NinjectDependencyResolver(IKernel kernel)
           : base(kernel)
       {
           this.kernel = kernel;
       }
   
       public IDependencyScope BeginScope()
       {
           return new NinjectDependencyScope(kernel.BeginBlock());
       }
   }
   

7. In your ~/App_Start/NinjectWebCommon.cs/CreateKernel安装 NuGet 时创建的方法，在后面添加以下行RegisterServices(kernel); line:

   GlobalConfiguration.Configuration.DependencyResolver = new NinjectDependencyResolver(kernel);
   

8. 配置你的内核：

   private static void RegisterServices(IKernel kernel)
   {
       kernel.Bind<IFoo>().To<Foo>();
   }        
   

9. Hit F5 and navigate to /api/values

10. 您将看到the bar.

显然，当 RC 达到 RTM 时，我希望会有一个Ninject.Mvc4NuGet 会将这 10 个步骤缩短到最多 5 个。