@RequestMapping(value = "/getFile/{Id}", method = RequestMethod.POST)
 public void upload(@PathVariable int Id, HttpServletResponse response) {
   ContractAttachment contractAttachment = iContractAttachmentService.loadByEntityId(Id);
   iFileProviderController.getFile(contractAttachment.getFileCode(), response);
 }
 @RequestMapping(value = "/save", method = RequestMethod.POST)
 public void save(@RequestBody ContractAttachment contractAttachment) {
   iContractAttachmentService.save(contractAttachment);
   iFileProviderService.confirmFileProvider(contractAttachment.getFileCode());
 }