从消息处理程序（不是控制器）中获取控制器和操作？

Question

如何在web api 2，framework 4.5中的消息处理程序中从请求中提取控制器和操作名称？例如，这将获得完整的URL：`                 Uri url = request.RequestUri;                 string originalUrl = url.OriginalString;

使用属性路由`

Answer 1

var config = request.GetConfiguration();
var routeData = config.Routes.GetRouteData(request);
var controllerContext = new HttpControllerContext(config, routeData, request);

request.Properties[HttpPropertyKeys.HttpRouteDataKey] = routeData;
controllerContext.RouteData = routeData;

// get controller type
var controllerDescriptor = new DefaultHttpControllerSelector(config).SelectController(request);
var controllerName = controllerDescriptor.ControllerName;
controllerContext.ControllerDescriptor = controllerDescriptor;

// get action name
var actionMapping = new ApiControllerActionSelector().SelectAction(controllerContext);
var actionName = actionMapping.ActionName;

所有功劳归于this gist。