如何在OnActionExecuting中获取控制器和动作名称？

是否可以找出OnActionExecuting中当前正在执行的控制器/动作？

你可以尝试ActionDescriptor的ActionExecutingContext，如下所示：

protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
   string actionName = filterContext.ActionDescriptor.ActionName;
   string controllerName = filterContext.ActionDescriptor.ControllerDescriptor.ControllerName
   .....
   base.OnActionExecuting(filterContext);
}

您可以使用ActionDescriptor的ActionExecutingContext

protected override void OnActionExecuting(ActionExecutingContext filterContext)
{
    var descriptor = filterContext.ActionDescriptor;
    var actionName = descriptor.ActionName;
    var controllerName = descriptor.ControllerDescriptor.ControllerName;
    ......
    base.OnActionExecuting(filterContext);
}

您可以看一下RouteData：

    Request.RequestContext.RouteData.Values["Controller"];
    Request.RequestContext.RouteData.Values["Action"];

ActionExecutingContext上下文将成为您的上下文。

var actionName = ((Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor)context.ActionDescriptor).ActionName;
var controllerName = ((Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor)context.ActionDescriptor).ControllerName;

对于ASP.NET Core，请使用以下命令，

var controllerName = ((ControllerBase)filterContext.Controller)
   .ControllerContext.ActionDescriptor.ControllerName;
var actionName = ((ControllerBase)filterContext.Controller)
   .ControllerContext.ActionDescriptor.ActionName;

var controllerName = (string)routingValues["controller"];

var actionName = (string)routingValues["action"];