@ResponseBody
  @RequestMapping(value = "/admin/upload.ajax", method = RequestMethod.POST)
  public ResponseEntity<byte[]> upload(
      @RequestParam("restaurantId") String restaurantId,
      @RequestParam("file") CommonsMultipartFile file)
      throws Exception {

    Map<String, Object> model = new HashMap<String, Object>();

    try {
      S3Object object = new S3Object(basePath + "/" + restaurantId);
      object.setDataInputStream(file.getInputStream());
      object.setContentLength(file.getSize());
      object.setContentType(file.getContentType());
      S3Bucket bucket = s3Service.getBucket(bucketName);
      s3Service.putObject(bucket, object);

      Restaurant restaurant = restaurantRepository.findByRestaurantId(restaurantId);
      restaurant.setHasUploadedImage(true);
      restaurantRepository.saveRestaurant(restaurant);

      model.put("success", true);
    } catch (Exception ex) {
      LOGGER.error("", ex);
      model.put("success", false);
      model.put("message", ex.getMessage());
    }

    String json = jsonUtils.serializeAndEscape(model);
    final HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.TEXT_HTML);
    headers.setCacheControl("no-cache");
    return new ResponseEntity<byte[]>(json.getBytes("utf-8"), headers, HttpStatus.OK);
  }
 @Override
 protected boolean putInputStream(String bucket, String key, InputStream data, String contentType)
     throws Exception {
   org.jets3t.service.model.S3Object object = new org.jets3t.service.model.S3Object(key);
   object.setContentType(contentType);
   object.setDataInputStream(data);
   object.setContentLength(data.available());
   return jetClient.putObject(bucket, object) != null;
 }
 /**
  * Creates a directory flagged file with the key and folder suffix.
  *
  * @param key the key to create a folder
  * @return true if the operation was successful, false otherwise
  */
 private boolean mkdirsInternal(String key) {
   try {
     String keyAsFolder = convertToFolderName(stripPrefixIfPresent(key));
     S3Object obj = new S3Object(keyAsFolder);
     obj.setDataInputStream(new ByteArrayInputStream(new byte[0]));
     obj.setContentLength(0);
     obj.setContentType(Mimetypes.MIMETYPE_BINARY_OCTET_STREAM);
     mClient.putObject(mBucketName, obj);
     return true;
   } catch (ServiceException se) {
     LOG.error("Failed to create directory: " + key, se);
     return false;
   }
 }