Question

我有一个MVC控制器已经存在的ASP.NET MVC 4.0项目，但是我想使用类ApiController来实现一些新的功能。

现有控制器工厂返回IController对象ApiController未继承的对象。为ApiController派生控制器创建另一个控制器工厂的最佳方法是什么，并使两个工厂共存？

ControllerBuilder.Current.SetControllerFactory((IControllerFactory)new BuilderControllers.BuilderControllerFactory());

public class BuilderControllerFactory :IControllerFactory
{
    public IController CreateController(RequestContext requestContext, string controllerName)
    {
        string controllerType = string.Format("BuilderControllers.{0}Controller", controllerName);
        IController controller = null;
        try
        {
            controller = Activator.CreateInstance(Type.GetType(controllerType)) as IController;
        }
        catch (System.Exception x)
        {
            //-- handle any failed requests --
        }
        return controller;
    }
}

Answer 1

你在谈论不同类型的控制器，一个来自IController，另一个来自IHttpController。保留现有的MVC控制器工厂并添加

GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpControllerActivator),new MyControllerActivator());
        GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpControllerSelector),new MyControllerSelector());

public class MyControllerActivator : IHttpControllerActivator
{
    public IHttpController Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType)
    {
        throw new NotImplementedException();
    }
}
public class MyControllerSelector : IHttpControllerSelector
{
    public HttpControllerDescriptor SelectController(HttpRequestMessage request)
    {
        return new HttpControllerDescriptor() {ControllerName="SomeController",ControllerType=typeof(MyApiController),Configuration=GlobalConfiguration.Configuration};
    }

    public IDictionary<string, HttpControllerDescriptor> GetControllerMapping()
    {
        throw new NotImplementedException();
    }
}

你将不得不玩这个想法来获得你想要的东西。这应该照顾你的问题。但我仍然不明白为什么你会这样做，因为这将导致依赖注入的问题。我会认为你有理由。

MVC4中ApiController的ControllerFactory

1 个答案: