public string UploadFileByManager(string strKey)
        {
            string strUploadErr = string.Empty;
            AccountInfo account = BLL.Account.GetLoginAccount();
            return UploadFile(strKey, -1, UserType.Manager, (account == null ? "未登录账户" : account.AccountName), ref strUploadErr);
        }
        /// <summary>
        /// 管理员上传文件
        /// </summary>
        /// <param name="postFile"></param>
        /// <returns></returns>
        public string UploadFileByManager(HttpPostedFile postFile)
        {
            string strUploadErr = string.Empty;
            AccountInfo account = BLL.Account.GetLoginAccount();
            return UploadFile(postFile, -1, UserType.Manager, (account == null ? "未登录账户" : account.AccountName), ref strUploadErr);
        }
        public string UploadFileByUser(string strKey)
        {
            return UploadFileByUser(HttpContext.Current.Request.Files[strKey]);
        }
        public string UploadFileByUser(HttpPostedFile postFile)
        {
            string strUploadErr = string.Empty;
            return UploadFileByUser(postFile, LoginUser, ref strUploadErr);
        }
        /// <summary>
        /// 会员上传文件
        /// </summary>
        /// <param name="postFile"></param>
        /// <param name="user"></param>
        /// <param name="strUploadErr"></param>
        /// <returns></returns>
        public string UploadFileByUser(HttpPostedFile postFile, UserInfo user, ref string strUploadErr)
        {
            int userMaxSpace = user.FileSpace; //会员总容量
            int userHasUpload = BLL.FileUpload.GetUserUpTotal(user.UserName);  //已上传容量
            if (userMaxSpace < userHasUpload + postFile.ContentLength)
                strUploadErr = "会员文件容量不足";
            else
            {
                string strFileName = UploadFile(postFile, BLL.Folder.CreateUserFolder(), UserType.User, user.UserName, ref strUploadErr);
                if (!string.IsNullOrEmpty(strFileName))
                    return strFileName;
            }

            return string.Empty;
        }
        public string UploadFile(string strKey, UserType userType, string userName, ref string strUploadErr)
        {
            return UploadFile(HttpContext.Current.Request.Files[strKey], -1, userType, UserName, ref strUploadErr);
        }
        /// <summary>
        /// 上传文件未归档
        /// </summary>
        /// <param name="postFile"></param>
        /// <param name="userType"></param>
        /// <param name="userName"></param>
        /// <param name="strUploadErr"></param>
        /// <returns></returns>
        public string UploadFile(HttpPostedFile postFile, UserType userType, string userName, ref string strUploadErr)
        {
            return UploadFile(postFile, -1, userType, userName, ref strUploadErr);
        }
        public string UploadFile(string strKey, int folderID, UserType userType, string userName, ref string strUploadErr)
        {
            return UploadFile(HttpContext.Current.Request.Files[strKey], folderID, userType, UserName, ref strUploadErr);
        }
        /// <summary>
        /// 上传文件，返回上传后文件的完整虚拟路径
        /// </summary>
        /// <param name="postFile">文件对象</param>
        /// <param name="folderID">文件夹ID</param>
        /// <param name="userType">上传用户类型</param>
        /// <param name="userName">上传用户名称</param>
        /// <param name="strUploadErr">返回的报错信息</param>
        /// <returns></returns>
        public string UploadFile(HttpPostedFile postFile, int folderID, UserType userType, string userName, ref string strUploadErr)
        {
            string strFullName = string.Empty; //需要返回的文件路径，相对路径 目录+文件名

            if (!config.EnableFileUpload)
                strUploadErr = "系统设置不允许文件上传";
            else if (postFile == null || (postFile != null && postFile.ContentLength == 0))
                strUploadErr = "无效的文件";
            else if (!config.EnableUploadExt.Split('|').Contains(Path.GetExtension(postFile.FileName).ToLower()))
                strUploadErr = "不支持此文件格式上传";
            else
            {
                #region 上传文件

                string strBaseName = string.Empty; //FileUtils.GetFileBaseName();
                //是否有文件名的配置 //默认配置 ${year}${month}${day}${millisecond}${rnd}
                if (!string.IsNullOrEmpty(config.UploadSaveRule))
                    strBaseName = StringUtils.GenerateSN(config.UploadSaveRule); //生成新的文件名
                else
                    strBaseName = Path.GetFileNameWithoutExtension(postFile.FileName); //原来的文件名
                string strExtend = Path.GetExtension(postFile.FileName).ToLower(); //扩展文件名

                string strNewFileName = strBaseName + strExtend;
                string strWaterMarkName = string.Empty; //水印图名称
                strFullName = Path.Combine(UploadFolder, strNewFileName);
                string strThumbName = string.Empty; //缩略图名称
                string strPhysicalPath = Server.MapPath(strFullName);
                int filesize = postFile.ContentLength;

                if (File.Exists(strPhysicalPath))
                {
                    strUploadErr = "文件已经存在";
                    return string.Empty;
                }

                postFile.SaveAs(Server.MapPath(strFullName));

                if (ValidateUtils.IsImage(strExtend))
                {
                    #region 生成图片缩略图、水印
                    if (config.WaterMarkPosition > 0) //是否启用水印
                    {
                        strWaterMarkName = strBaseName + "_watermark" + strExtend;
                        if (config.WaterMarkType.Equals("文字水印") && config.WaterMarkText.Trim().Length > 0)
                            ImageUtils.AddTextWatermark(strPhysicalPath, config.WaterMarkPosition, config.WaterMarkText, config.WaterMarkTextSize, config.WaterMarkTextColor, config.WaterMarkTextFont, (float)config.WaterMarkAlpha);
                        else if (config.WaterMarkType.Equals("图片水印") && File.Exists(Server.MapPath(config.WaterMarkImage)))
                            ImageUtils.AddImageWatermark(strPhysicalPath, config.WaterMarkPosition, Server.MapPath(config.WaterMarkImage), (float)config.WaterMarkAlpha);

                        if (File.Exists(Server.MapPath(Path.Combine(UploadFolder, strWaterMarkName))))
                        {
                            File.Delete(strPhysicalPath); //删除原图，用水印图替换
                            strNewFileName = strWaterMarkName; //重新赋值文件名
                            strFullName = Path.Combine(UploadFolder, strWaterMarkName); //重新赋值全路径
                            strPhysicalPath = Server.MapPath(strFullName); //这里是水印图的物理路径
                        }
                    }

                    strThumbName = strFullName.Replace(strExtend, "_thumb" + strExtend);
                    int ThumbSize_Width = ConfigProvider.Configs.ThumbSize.Split('X').Length > 0 ? WebUtils.GetInt(ConfigProvider.Configs.ThumbSize.Split('X')[0]) : 100;
                    int ThumbSize_Height = ConfigProvider.Configs.ThumbSize.Split('X').Length > 1 ? WebUtils.GetInt(ConfigProvider.Configs.ThumbSize.Split('X')[1]) : 100;

                    string strThumbMode = config.ThumbModel;
                    if (string.IsNullOrEmpty(strThumbMode))
                        strThumbMode = "Cut";

                    //生成缩略图
                    ImageUtils.MakeThumbPhoto(strPhysicalPath, base.Server.MapPath(strThumbName), ThumbSize_Width, ThumbSize_Height, strThumbMode);

                    #endregion
                }

                FileUploadInfo model = new FileUploadInfo
                {
                    FolderID = folderID, //文件夹ID -1表示未归类
                    FileName = strNewFileName,
                    FileExt = strExtend,
                    FileSize = filesize,
                    VirtualPath = strFullName,
                    Thumb = ValidateUtils.IsImage(strExtend) ? strThumbName : string.Empty, //只有图片才有缩略图
                    OriginalPath = postFile.FileName, //原文件
                    UserType = userType.ToString(),
                    UserName = userName,
                    DownloadCount = 0, //下载次数
                    Lang = cultureLang,
                    AutoTimeStamp = System.DateTime.Now
                };

                if (SinGooCMS.BLL.FileUpload.Add(model) > 0)
                    log.AddEvent(userName, userName + "[" + userType + "]上传文件[" + strFullName + "]成功");

                #endregion
            }

            return strFullName; //全虚拟路径，目录+文件名
        }