public async Task <IActionResult> saveDataToTemplate([FromBody] AllReqData req)
{
MemoryStream pdfMemoryStream = saveService.saveDataToTemplate(req);
Response.Headers.Add("Content-Disposition", "attachment; filename=" + req.fileCode);
return(new FileStreamResult(pdfMemoryStream, "application/octet-stream"));//文件流方式，指定文件流对应的ContenType。
}
