Ninject for Asp.net Web API

Question

使用Ninject和Web API时出现此错误,但它适用于MVC控制器:

Type 'App.Web.Controllers.ProductController' does not have a default constructor

NinjectControllerFactory:

public class NinjectControllerFactory : DefaultControllerFactory
    {
        private IKernel ninjectKernel;

        public NinjectControllerFactory()
        {
            ninjectKernel = new StandardKernel();
            AddBindings();
        }

        protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
        {
            return controllerType == null ? null : (IController)ninjectKernel.Get(controllerType);
        }

        public void AddBindings()
        {
            ninjectKernel.Bind<IProductRepository>().To<EFProductRepository>();
        }
    }

Global.asax.cs:

BundleConfig.RegisterBundles(BundleTable.Bundles);

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

ProductController:

   public class ProductController : ApiController
        {
            private IProductRepository repository;

            public ProductController(IProductRepository ProducteRepository)
            {
                this.repository = ProductRepository;
            }

            public IEnumerable<Product> GetAllProducts()
            {
                return repository.Products.AsEnumerable();
            }
        }

Answer 1

您已经覆盖了DefaultControllerFactory. 但这用于实例化 ASP.NET MVC 控制器（派生自System.Web.Mvc.Controller）。它与 ASP.NET Web API 控制器（源自 ASP.NET Web API 的控制器）完全无关System.Web.Http.ApiController。

基本上，您在这里所做的就是将依赖项注入到 ASP.NET MVC 中。如果您想将其用于 Web API，您可以查看以下指南：

• http://www.strathweb.com/2012/05/using-ninject-with-the-latest-asp-net-web-api-source/
• http://www.peterprovost.org/blog/2012/06/19/adding-ninject-to-web-api/