public string ExportExcelTemplate()
        {
            var tenantId = ApplicationContext.Current.TenantId;
            var userId   = ApplicationContext.Current.UserId;
            var path     = string.Empty;

            try
            {
                //设置Excel表头
                var templateData = AppAccountService.Instance.GetTemplateStream(tenantId, userId);
                if (templateData.Length == 0)
                {
                    //error
                    AppConnectLogHelper.Error("生成模板失败,文件数据流为null");
                    return(path);
                }
                var dfsItem = new DfsItem("AppConnectFile", "人员信息模板表.xls", templateData, tenantId);
                var dfsPath = Dfs.Store(dfsItem);
                path = Dfs.ToDownloadUrl(dfsPath.ToString(), UrlSignDomain.Tms, userId);

                ApplicationContext.Current.Put(Const.BeisenContextXHasException, ExceptionType.UrlRedirect);
                ApplicationContext.Current.Put(Const.BeisenContextXExResultModel, new ResultModel {
                    code = "302", message = "url redirect", param = path
                });
            }
            catch (Exception ex)
            {
                AppConnectLogHelper.Error("生成模板失败", ex);
            }
            return(path);
        }