ASP MVC 2 Ninject

Question

我想了解一些關於MVC，並且在使用Ninject時遇到了一個問題。我想綁定存儲庫，但不斷收到'對象引用未設置爲對象的實例'錯誤。

我創建了我NinjectControllerFactory：

public class NinjectControllerFactory : DefaultControllerFactory 
{ 
    // A Ninject "kernel" is the thing that can supply object instances 
    private IKernel kernel = new StandardKernel(new SportsShopServices()); 

    // ASP .NET MVC calls this to get the controller for each request 
    protected override IController GetControllerInstance(RequestContext context, Type controllerType) 
    { 
     if (controllerType == null) 
      return null; 
     return (IController) kernel.Get(controllerType); 
    } 

    // Configure how abstract sevice types are mapped to concrete implementations 
    private class SportsShopServices : NinjectModule 
    { 
     public override void Load() 
     { 
      Bind<IProductRepository>().To<SqlProductsRepository>() 
       .WithConstructorArgument("connectionString", 
       ConfigurationManager.ConnectionStrings["AppDb"].ConnectionString); 
     } 
    } 
} 

和我的控制器：

public class ProductsController : Controller 
{ 
    private IProductRepository productsRepository; 

    // Constructor used with Ninject 
    public ProductsController(IProductRepository _productsRepository) 
    { 
     this.productsRepository = _productsRepository; 
    } 

    public ViewResult List() 
    { 
     return View(productsRepository.Products.ToList()); 
    } 
} 

我已經修改了Web.config文件，以提供數據庫連接字符串和Global.asax文件的Application_Start（ ）方法包括：

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

我正在做一個實例e來自PRO ASP .NET MVC 2的書，但是不能完成這項工作，一直在嘗試。

Answer 1

如果你只是想要out-out-the-box ninject功能，你創建自己的控制器工廠太多了。

所有你需要的是在Global.asax中

public class MvcApplication : NinjectHttpApplication 
{  
    protected override IKernel CreateKernel() 
    { 
     var modules = new INinjectModule[] 
     { 
      new ServiceModule() 
     }; 

     return new StandardKernel(modules); 
    } 

    protected override void OnApplicationStarted() 
    { 
     AreaRegistration.RegisterAllAreas(); 

     RegisterRoutes(RouteTable.Routes); 

     RegisterAllControllersIn(Assembly.GetExecutingAssembly()); 

    } 


    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 = "" } // Parameter defaults 
     ); 

    } 

    internal class ServiceModule : NinjectModule 
    { 
     public override void Load() 
     { 
      // controllers 
      this.Bind<Controllers.AccountController>().ToSelf(); 
      this.Bind<Controllers.HomeController>().ToSelf(); 

      // Repository 
      Bind<Controllers.IFormsAuthentication>().To<Controllers.FormsAuthenticationService>(); 
      Bind<Controllers.IMembershipService>().To<Controllers.AccountMembershipService>(); 
     } 
    } 
}