在MVC 6 alpha4中手动实例化控制器 [英] Manually instantiate a Controller in MVC 6 alpha4

问题描述

我正在对MVC 6 alpha 4进行一些实验.尝试手动激活控制器并返回它而不是HomeController，但这是行不通的.请帮忙.

I am doing some experimentation with MVC 6 alpha 4. Trying to activate a controller manually and returning it instead of HomeController but this doesn't work. Any help please..

到目前为止，我已经使用此代码创建了自己的控制器工厂.

So far I have created my own controller factory with this code.

 public class MyControllerFactory : IControllerFactory
{
    public object CreateController(ActionContext actionContext)
    {
    var actionDescriptor = actionContext.ActionDescriptor as Microsoft.AspNet.Mvc.ReflectedActionDescriptor;

    Type controllerType = Type.GetType("Hello.Controllers.MyController");
    var controller = _typeActivator.CreateInstance(_serviceProvider, controllerType);

    actionContext.Controller = controller;
    _controllerActivator.Activate(controller, actionContext);

    return controller;
    }
}

我已经调试了代码. MyController的构造函数被调用，并且MyController从CreateController方法返回，但出现错误.调试器永远不会到达IActionResult Index().这是我得到的错误.

I have debugged the code. The constructor of MyController gets called and MyController is being returned from the CreateController method but I get the error. The debugger never reaches to IActionResult Index(). Here is the error that I get.

System.Reflection.TargetException: Object does not match target type.
at System.Reflection.RuntimeMethodInfo.CheckConsistency(Object target)
at System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj, BindingFlags invokeAttr,      Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder,     Object[] parameters, CultureInfo culture)
at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
at Microsoft.AspNet.Mvc.ReflectedActionExecutor.<ExecuteAsync>d__2.MoveNext()

推荐答案

以下是答案.

首先，MyController需要从HomeController继承.
其次，在激活控制器之前，我需要在RouteData中更改"controller"值.

Firstly, MyController needs to inherit from HomeController.
Secondly, I need to change the 'controller' value in RouteData before activating the controller.

actionContext.RouteData.Values["controller"] = "My";

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