write a user's profile photo

gistfile1.txt

    @RequestMapping(value = USER_COLLECTION_ENTRY_PHOTO_URL, method = RequestMethod.POST)
    @ResponseBody
    public Long uploadBasedOnPathVariable(@PathVariable("userId") Long userId, @RequestParam("file") MultipartFile file) throws Throwable {
        byte[] bytesForImage = file.getBytes();
        userService.writeUserProfilePhotoAndQueueForConversion(userId, file.getName(), bytesForImage);
        return userId;
    }