欢迎！我白天是个邮递员，晚上就是个有抱负的演员。这是我的网站。我住在天朝的帝都，有条叫做Jack的狗。

//上传图标        function ajaxFileUpload() {            $.ajaxFileUpload({                url: "@Url.Action("UploadImgFile", "Upload")", //用于文件上传的服务器端请求地址                secureuri: false, //一般设置为false                fileElementId: $("input[name=file_upload]"), //文件上传空间的id属性                dataType: "text", //返回值类型                success: function (data, status) {  //服务器成功响应处理函数                    var data2 = JSON.parse(data);                    if (data2.ResultType == "@OperationResultType.Success.ToInt32()") {                        $("input[name=Icon]").val(data2.ResultMessage);                        $("label.img-label").text("重传");                    }                    else {                        showMessage(data2.ResultMessage);                    }                },                error: function (data, status, e) {//服务器响应失败处理函数                    showMessage("服务器未响应");                }            });            return false;        }   /// <summary>        /// 浏览上传文件        /// </summary>        /// <param name="file_upload">文件</param>        /// <returns></returns>        public ContentResult UploadImgFile(HttpPostedFileBase file_upload)        {            OperationResult result;            if (file_upload == null)            {                result = new OperationResult(OperationResultType.Error, "请选择要上传的图片");            }            else            {                var fileExtension = Path.GetExtension(file_upload.FileName).ToLower();                if (!WebConfigInfo.ImageSupportType.Contains(fileExtension))                {                    result = new OperationResult(OperationResultType.Error, "请上传" + WebConfigInfo.ImageSupportType+"格式的图片");                }                else if (file_upload.ContentLength > Convert.ToInt32(WebConfigInfo.IconFileSizeLimit.Remove(WebConfigInfo.IconFileSizeLimit.LastIndexOf(' '))) * 1024)                {                    result = new OperationResult(OperationResultType.Error, "请上传最大不超过" + WebConfigInfo.IconFileSizeLimit+"的图片");                }                else                {                    string path = "/upload/" + DateTime.Now.ToString("yyyyMMdd");                    string uploadDir = Server.MapPath(WebConfigInfo.VirtualDirectoryName + path);                    // 如果上传课程文件夹不存在，则创建                    if (!Directory.Exists(uploadDir))                        Directory.CreateDirectory(uploadDir);                    string fileUrl = string.Format("{0}/{1}{2}", path, Guid.NewGuid().ToString().Replace("-", string.Empty), fileExtension);                    file_upload.SaveAs(Server.MapPath(WebConfigInfo.VirtualDirectoryName + fileUrl));                    result = new OperationResult(OperationResultType.Success, fileUrl);                }            }            var json = string.Format("{0}\"ResultType\":\"{1}\",\"ResultMessage\":\"{2}\"{3}", "{", result.ResultType.ToInt32(), result.Message, "}");            return Content(json);        }