public static String readQRCode2(String fileName) {
        File file = new File(fileName);
        BufferedImage image = null;
        BinaryBitmap bitmap = null;
        Result result = null;

        try {
            image = ImageIO.read(file);
            int[] pixels = image.getRGB(0, 0, image.getWidth(), image.getHeight(), null, 0, image.getWidth());
            RGBLuminanceSource source = new RGBLuminanceSource(image.getWidth(), image.getHeight(), pixels);
            bitmap = new BinaryBitmap(new HybridBinarizer(source));
        } catch (IOException e) {
            e.printStackTrace();
        }

        if (bitmap == null) {
            return null;
        }

        QRCodeReader reader = new QRCodeReader();
        try {
            Map<DecodeHintType, Object> hintMap = new Hashtable<DecodeHintType, Object>();
            hintMap.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
            hintMap.put(DecodeHintType.POSSIBLE_FORMATS, EnumSet.allOf(BarcodeFormat.class));
            result = reader.decode(bitmap, hintMap);
            log.info("Decoded image successfully, result was : '" + result.getText() + "'");
            return result.getText();
        } catch (NotFoundException e) {
            e.printStackTrace();
        } catch (ChecksumException e) {
            e.printStackTrace();
        } catch (FormatException e) {
            e.printStackTrace();
        }

        return null;

    }