private async Task <IActionResult> ExportXls(byte[] fileContent, string description) { var datetime = DateTime.Now.ToString("yyyyMMddHHmmss"); var fileName = $"{description}导出{datetime}.xlsx"; using var sr = new MemoryStream(fileContent); var file = new FormFile(sr, 0, fileContent.Length, fileName, fileName); var r = await file.UploadToDb(_fileServices, XlsExportPath, fileName); return(new JsonResult(r)); }