微信端上传图片/返回图片地址

这是从前端接收的base64的图片，流程：前端点击input 中 type=“file” 的上传，选中一张图片后随即运行ajax 走到后台，后台
#region 微信端的上传图片
        [HttpPost]
        public ActionResult SaveNewsBackImage(string path, string ClassID, string TeacherID)
        {
            //保存图片到服务器，
            string basePath = "/Upload/Article/";
            string imgname = DateTime.Now.Ticks + ".jpg";
            string basepath = HttpContext.Server.MapPath(basePath);
            string Pic_Path = basepath + imgname;
            using (FileStream fs = new FileStream(Pic_Path, FileMode.Create))
            {
                using (BinaryWriter bw = new BinaryWriter(fs))
                {
                    if (path.Contains(','))
                        path = path.Split(',')[1];
                    byte[] data = Convert.FromBase64String(path);
                    bw.Write(data);
                    bw.Close();
                }
            }
            string serpath = ConfigurationManager.AppSettings["Domain"].ToString();//这是配置的是网站例：www.myaoang.com
            string classimagePath = serpath + basePath + imgname;
            return Content(classimagePath);//返回的是：www.myaoang.com/Upload/Artice/1234567890.jpg
            //把图片地址存到数据库
            //string serpath = ConfigurationManager.AppSettings["Domain"].ToString();
            //string classimagePath = serpath + basePath + imgname;
            //var flag = new ClassBLL().SaveNewsBackImage(classimagePath, Convert.ToInt32(ClassID), Convert.ToInt32(TeacherID));
            //return Content("上传成功");
        }
        #endregion