带有Ninject的WebAPI

Question

我遇到了麻烦,制作了Ninject和WebAPI.All合作.我将更加具体:
首先,我玩了WebApi.All包,看起来它对我来说很好.
第二,我加入RegisterRoutes的Global.asax下一行:

routes.Add(new ServiceRoute("api/contacts", new HttpServiceHostFactory(), typeof(ContactsApi)));

所以最终的结果是:

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    routes.Add(new ServiceRoute("api/contacts", new HttpServiceHostFactory(), typeof(ContactsApi)));

        routes.MapRoute(
            "Default", // Route name
            "{controller}/{action}/{id}", // URL with parameters
            new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
        );

    ControllerBuilder.Current.SetControllerFactory(new NinjectControllerFactory());

}

一切似乎都很好,但是当我试图将用户重定向到特定的操作时,例如:

return RedirectToAction("Index", "Home");

localhost:789/api/contacts?action=Index&controller=Home 是不好的.我划了一条线RegisterRoute,现在它看起来像:

public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoute(
                "Default", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
            );
            routes.Add(new ServiceRoute("api/contacts", new HttpServiceHostFactory(), typeof(ContactsApi)));
            ControllerBuilder.Current.SetControllerFactory(new NinjectControllerFactory());

        }

现在重定向工作正常,但是当我尝试访问我的API操作时,我得到错误告诉我 Ninject couldn't return controller "api"哪个是绝对合乎逻辑的,我没有这样的控制器.

我确实搜索了一些如何使Ninject与WebApi一起工作的信息,但我找到的所有内容仅适用于MVC4或.Net 4.5.由于技术问题,我无法将我的项目转移到新平台,所以我需要为这个版本找到一个可行的解决方案.

这个答案看起来像一个有效的解决方案,但是当我尝试启动项目时,我得到编译器错误

CreateInstance = (serviceType, context, request) => kernel.Get(serviceType);

告诉我:

System.Net.Http.HttpRequestMessage is defined in an assembly that is not referenced

关于在汇编中添加refference的事情

System.Net.Http, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35

我不知道接下来要做什么,我在.NET 4和MVC3上找不到关于ninject和webapi的任何有用信息.任何帮助,将不胜感激.

Answer 1

以下是我为您编写的几个步骤,可以帮助您入门:

1. 使用Internet模板创建新的ASP.NET MVC 3项目
2. 安装以下2个NuGets:Microsoft.AspNet.WebApi和Ninject.MVC3

3. 定义一个接口:

   public interface IRepository
   {
       string GetData();
   }
   

4. 并实施:

   public class InMemoryRepository : IRepository
   {
       public string GetData()
       {
           return "this is the data";
       }
   }
   

5. 添加API控制器:

   public class ValuesController : ApiController
   {
       private readonly IRepository _repo;
       public ValuesController(IRepository repo)
       {
           _repo = repo;
       }
   
       public string Get()
       {
           return _repo.GetData();
       }
   }
   

6. 在您的注册API路线Application_Start:

   public static void RegisterRoutes(RouteCollection routes)
   {
       routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
   
       GlobalConfiguration.Configuration.Routes.MapHttpRoute(
           name: "DefaultApi",
           routeTemplate: "api/{controller}/{id}",
           defaults: new { id = RouteParameter.Optional }
       );
   
       routes.MapRoute(
           "Default",
           "{controller}/{action}/{id}",
           new { controller = "Home", action = "Index", id = UrlParameter.Optional }
       );
   }
   

7. 使用Ninject添加自定义Web API依赖关系解析器:

   public class LocalNinjectDependencyResolver : System.Web.Http.Dependencies.IDependencyResolver
   {
       private readonly IKernel _kernel;
   
       public LocalNinjectDependencyResolver(IKernel kernel)
       {
           _kernel = kernel;
       }
   
       public System.Web.Http.Dependencies.IDependencyScope BeginScope()
       {
           return this;
       }
   
       public object GetService(Type serviceType)
       {
           return _kernel.TryGet(serviceType);
       }
   
       public IEnumerable<object> GetServices(Type serviceType)
       {
           try
           {
               return _kernel.GetAll(serviceType);
           }
           catch (Exception)
           {
               return new List<object>();
           }
       }
   
       public void Dispose()
       {
       }
   }
   

8. 在Create方法(~/App_Start/NinjectWebCommon.cs)中注册自定义依赖项解析器:

   /// <summary>
   /// Creates the kernel that will manage your application.
   /// </summary>
   /// <returns>The created kernel.</returns>
   private static IKernel CreateKernel()
   {
       var kernel = new StandardKernel();
       kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel);
       kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>();
   
       RegisterServices(kernel);
   
       GlobalConfiguration.Configuration.DependencyResolver = new LocalNinjectDependencyResolver(kernel); 
       return kernel;
   }
   

9. 在RegisterServicesmethod(~/App_Start/NinjectWebCommon.cs)中配置内核:

   /// <summary>
   /// Load your modules or register your services here!
   /// </summary>
   /// <param name="kernel">The kernel.</param>
   private static void RegisterServices(IKernel kernel)
   {
       kernel.Bind<IRepository>().To<InMemoryRepository>();
   }        
   

10. 运行应用程序并导航到/api/values.