asp.net mvc源码分析-Controllerl篇 ControllerDescriptor

public IActionInvoker ActionInvoker {
            get {
                if (_actionInvoker == null) {
                    _actionInvoker = CreateActionInvoker();
                }
                return _actionInvoker;
            }
            set {
                _actionInvoker = value;
            }
        }
protected virtual IActionInvoker CreateActionInvoker() {
            return new ControllerActionInvoker();
        }

和TempDataProvider属性定义一样，大家一定要习惯这些代码啊。

而ControllerActionInvoker的定义也很简单，但是这个类却不简单啊。

让我们来看看你InvokeAction的定义吧：

[csharp]
public virtual bool InvokeAction(ControllerContext controllerContext, string actionName) {
           if (controllerContext == null) {
               throw new ArgumentNullException("controllerContext");
           }
           if (String.IsNullOrEmpty(actionName)) {
               throw new ArgumentException(MvcResources.Common_NullOrEmpty, "actionName");
           }

           ControllerDescriptor controllerDescriptor = GetControllerDescriptor(controllerContext);
           ActionDescriptor actionDescriptor = FindAction(controllerContext, controllerDescriptor, actionName);
           if (actionDescriptor != null) {
               FilterInfo filterInfo = GetFilters(controllerContext, actionDescriptor);

               try {
                   AuthorizationContext authContext = InvokeAuthorizationFilters(controllerContext, filterInfo.AuthorizationFilters, actionDescriptor);
                   if (authContext.Result != null) {
                       // the auth filter signaled that we should let it short-circuit the request
                       InvokeActionResult(controllerContext, authContext.Result);
                   }
                   else {
                       if (controllerContext.Controller.ValidateRequest) {
                           ValidateRequest(controllerContext);
                       }

                       IDictionary<string, object> parameters = GetParameterValues(controllerContext, actionDescriptor);
                       ActionExecutedContext postActionContext = InvokeActionMethodWithFilters(controllerContext, filterInfo.ActionFilters, actionDescriptor, parameters);
                       InvokeActionResultWithFilters(controllerContext, filterInfo.ResultFilters, postActionContext.Result);
                   }
               }
               catch (ThreadAbortException) {
                   // This type of exception occurs as a result of Response.Redirect(), but we special-case so that
                   // the filters don't see this as an error.
                   throw;
               }
               catch (Exception ex) {
                   // something blew up, so execute the exception filters
                   ExceptionContext exceptionContext = InvokeExceptionFilters(controllerContext, filterInfo.ExceptionFilters, ex);
                   if (!exceptionContext.ExceptionHandled) {
                       throw;
                   }
                   InvokeActionResult(controllerContext, exceptionContext.Result);
               }

               return true;
           }

           // notify cont

补充：Web开发 , ASP.Net ,