upload-simple

 @PostMapping("/savefile")
   public ResponseEntity<String> handleFileUpload(@RequestParam("file") MultipartFile file) {
      String message;
      try {
         Path imagePath = this.rootLocation.resolve(file.getOriginalFilename())
         // print path 
        System.out.println("Storing image to:" + resolvedPath);
         Files.copy(file.getInputStream(), imagePath);
        
         files.add(file.getOriginalFilename());

         message = "Successfully uploaded!";
         return ResponseEntity.status(HttpStatus.OK).body(message);
      } catch (Exception e) {
         System.out.println(e)
         System.out.println(e.getMessage())
         message = "Failed to upload!";
         return ResponseEntity.status(HttpStatus.EXPECTATION_FAILED).body(message);
      }
   }