public ActionResult GetQcode()
 {
     try
     {
         WXAPPManager manager = new WXAPPManager();
         using (var client = Tuhu.Nosql.CacheHelper.CreateCacheClient("WXAPPQcode"))
         {
             var resultClient = client.Get <QCodeEntity>("qcode");
             if (resultClient.Success)
             {
                 var bytes = manager.GetQcode(resultClient.Value, User.Identity.Name);
                 client.Remove("qcode");
                 return(File(bytes, "image/jpeg", Guid.NewGuid().ToString() + resultClient.Value.path + ".jpg"));
             }
             else
             {
                 return(Content(JsonConvert.SerializeObject(new
                 {
                     Code = -1,
                     Msg = "缓存设置失败"
                 })));
             }
         }
     }
     catch (Exception em)
     {
         return(Content(JsonConvert.SerializeObject(em)));
     }
 }