HttpConfiguration.get_ServiceResolver()缺少

Question

我正在使用MVC4连接Ninject并让它正在努力实际解决依赖关系.但是,我得到以下异常:

找不到方法:'System.Web.Http.Services.DependencyResolver System.Web.Http.HttpConfiguration.get_ServiceResolver()'.

任何人遇到这个并有一个解决方案吗？

Answer 1

GlobalConfiguration.Configuration.ServiceResolver被替换GlobalConfiguration.Configuration.DependencyResolver为RC.所以我猜你使用的Ninject包根本就不是为RC而设计的.这是一个突破性的变化.

以下是使Ninject与ASP.NET MVC 4 Web API RC一起工作的步骤:

1. 使用Empty模板创建一个新的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. 定义一个定制的API依赖解析器如图这一要点:

   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. 在~/App_Start/NinjectWebCommon.cs/CreateKernel安装NuGet时创建的方法中,在行后面添加以下RegisterServices(kernel);行:

   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. 点击F5并导航到/api/values

10. 你得到了the bar.

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