@Async
    @Override
    public void upload(MultipartFile file) {
        if (excelParser == null) {
            log.info("null");
        } else {
            log.info("not null");
        }
        getAllSheets(file);
    }


    private Set<XSSFSheet> getAllSheets(MultipartFile file) {
        try {
            return excelParser.getAllSheets(file.getInputStream());
        } catch (IOException ex) {
            throw new UploadFileParseException();
        }
    }