Tess4j，Java：Tesseract导致JVM崩溃

Question

我正在努力在我们的应用程序中集成OCR功能。目前，每当我运行doOCr方法时，JVM崩溃并停止整个应用程序。我检查了一下，发现了this，但答案很清楚，因为它只是告诉创建bean，但是为了什么，是未知的。有任何想法吗？谢谢。

COde：

 public synchronized String testOcr(String fileLocation, int attachId) {
     try {
            File imageFile = new File(fileLocation);
            BufferedImage img = ImageIO.read(imageFile);
            String identifier = String.valueOf(new BigInteger(130, random).toString(32));
            String blackAndWhiteImage = previewPath + identifier + ".png";
            File outputfile = new File(blackAndWhiteImage);
            BufferedImage bufferedImage = BitmapImageUtil.convertToGrayscale(img, new Dimension(img.getWidth(), img.getHeight()));
            bufferedImage = Scalr.resize(bufferedImage,img.getWidth()*2,img.getHeight()*2);
 ITesseract instance = Tesseract.getInstance();
            synchronized (instance) {
                // Point to one folder above tessdata directory, must contain training data
                instance.setDatapath("/usr/share/tesseract-ocr/");
                // ISO 693-3 standard
                instance.setLanguage("deu");
                String result = instance.doOCR(outputfile);
                //System.out.println("Result is "+result);
                result = result.replaceAll("[^a-zA-Z0-9öÖäÄüÜß@\\s]", "");
                Files.delete(new File(blackAndWhiteImage).toPath());
                GroupAttachments groupAttachments = this.groupAttachmentsDAO.getAttachmenById(attachId);
                if (groupAttachments != null) {
                    saveIndexes(result, groupAttachments.getFileName(), null, groupAttachments.getGroupId(), false, attachId);
                }
                return result;
            }
        } catch (Exception ignored) {
        }
        return null;
    }