public ActionResult ImageUploadToAli()
        {
            var imageName = string.Empty;
            var msg       = string.Empty;
            var imageUrl  = string.Empty;

            if (Request.Files.Count > 0)
            {
                try
                {
                    var Imgfile = Request.Files[0];
                    var buffer  = new byte[Imgfile.ContentLength];
                    Imgfile.InputStream.Read(buffer, 0, buffer.Length);
                    var uploadResult = ImageUploadHelper.UpdateLoadImage(buffer);
                    if (uploadResult.Item1)
                    {
                        imageUrl = ImageHelper.GetImageUrl(uploadResult.Item2);
                        msg      = "上传成功";
                    }
                    else
                    {
                        msg = uploadResult.Item2;
                    }
                }
                catch (Exception ex)
                {
                    msg = ex.Message;
                }
            }
            else
            {
                msg = "请选择文件";
            }
            return(Json(new
            {
                Image = imageUrl,
                Msg = msg
            }, "text/html"));
        }