public class ErrorMessage:DelegatingHandler    {          protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)        {            return base.SendAsync(request, cancellationToken).ContinueWith<HttpResponseMessage>((responseToCompleteTask) =>            {                HttpResponseMessage response = responseToCompleteTask.Result;                HttpError error = null;                if (response.TryGetContentValue<HttpError>(out error))                {                    //自定义错误处理                      //error.Message = "这个接口调用出错了";                  }                if (error != null)                {   //这是本人创建的一个返回类                                       var resultMsg = new BaseResModel<BaseModel> { errorno = (int)response.StatusCode, page = -1, total = -1, records = -1 };                    return new HttpResponseMessage                    {                        Content = new StringContent(SerializeUtils<BaseResModel<BaseModel>>.Serialize(resultMsg),                        System.Text.Encoding.GetEncoding("UTF-8"), "application/json"),                        StatusCode = HttpStatusCode.OK                    };                }                else                {                    return response;                }            });        }    }

public class NotFoundActionSelector: ApiControllerActionSelector    {        public override HttpActionDescriptor SelectAction(HttpControllerContext controllerContext)        {            HttpActionDescriptor decriptor = null;            try            {                decriptor = base.SelectAction(controllerContext);            }            catch (HttpResponseException ex)            {                var code = ex.Response.StatusCode;                if (code != HttpStatusCode.NotFound && code != HttpStatusCode.MethodNotAllowed)                    throw;                var routeData = http://www.mamicode.com/controllerContext.RouteData;"action"] = "Handle404";                IHttpController httpController = new ErrorController();                controllerContext.Controller = httpController;                controllerContext.ControllerDescriptor = new HttpControllerDescriptor(controllerContext.Configuration, "Error", httpController.GetType());                decriptor = base.SelectAction(controllerContext);            }            return decriptor;        }    }

public class NotFoundControllerSelector : DefaultHttpControllerSelector    {        public NotFoundControllerSelector(HttpConfiguration configuration)            : base(configuration)        {        }        public override HttpControllerDescriptor SelectController(HttpRequestMessage request)        {            HttpControllerDescriptor decriptor = null;            try            {                decriptor = base.SelectController(request);            }            catch (HttpResponseException ex)            {                var code = ex.Response.StatusCode;                if (code != HttpStatusCode.NotFound)                    throw;                var routeValues = request.GetRouteData().Values;                routeValues["controller"] = "Error";                routeValues["action"] = "Handle404";                decriptor = base.SelectController(request);            }            return decriptor;        }    }

public class SupportFilter : AuthorizeAttribute    {        //重写基类的验证方式，加入我们自定义的Ticket验证        RedisHelper redis = new RedisHelper(1);        public override void OnAuthorization(System.Web.Http.Controllers.HttpActionContext actionContext)        {            //url获取token            var content = actionContext.Request.Properties["MS_HttpContext"] as HttpContextBase;            var token = content.Request.QueryString["Token"];            var userid = content.Request.QueryString["userid"] != null ? int.Parse(content.Request.QueryString["userid"]) : 0;            var mac = content.Request.QueryString["mac"] != null ? content.Request.QueryString["mac"] : null;            var routes = new RouteCollection();            RouteConfig.RegisterRoutes(routes);            RouteData routeData = http://www.mamicode.com/routes.GetRouteData(content);"user" && action.ToLower() == "login")                || (controller.ToLower() == "user" && action.ToLower() == "register" )|| (controller.ToLower() == "banner" && action.ToLower() == "getbanner") || (controller.ToLower() == "device" && action.ToLower() == "login"))                            {            }            else            {                var attributes = actionContext.ActionDescriptor.GetCustomAttributes<AllowAnonymousAttribute>().OfType<AllowAnonymousAttribute>();                bool isAnonymous = attributes.Any(a => a is AllowAnonymousAttribute);                if (isAnonymous) base.OnAuthorization(actionContext);                if (userid != 0 && token != null && token.Length > 0)                {                    if (redis.StringGet("user_token_" + userid.ToString()) != token)                    {                        HandleUnauthorizedRequest(actionContext);                    }                }                else if (mac != null && token != null && token.Length > 0)                {                    if (redis.StringGet("device_token_" + mac) != token)                    {                        HandleUnauthorizedRequest(actionContext);                    }                }                else                    HandleUnauthorizedRequest(actionContext);            }        }        protected override void HandleUnauthorizedRequest(HttpActionContext actionContext)        {            base.HandleUnauthorizedRequest(actionContext);            if (actionContext.Response.StatusCode == System.Net.HttpStatusCode.Unauthorized)            {                actionContext.Response.Content = new StringContent(SerializeUtils<BaseResModel<BaseModel>>.Serialize(new BaseModel() { errorno = -4, errormsg = "" }), System.Text.Encoding.UTF8, "application/json");            }        }    }

   config.MessageHandlers.Add(new ErrorMessage());            config.Filters.Add(new SupportFilter());            config.Services.Replace(typeof(IHttpControllerSelector), new NotFoundControllerSelector(config));            config.Services.Replace(typeof(IHttpActionSelector), new NotFoundActionSelector());            // Web API 路由            config.MapHttpAttributeRoutes();            config.Routes.MapHttpRoute(                name: "DefaultApi",                routeTemplate: "api/{controller}/{id}",                defaults: new { id = RouteParameter.Optional }            );            config.Routes.MapHttpRoute(              name: "Error404",              routeTemplate: "{*url}",              defaults: new { controller = "Error", action = "Handle404" }          );