java 多个二维码读取报错

 多个二维码的图片读取返回数组，在异常里处理

 public static String decode(File file) throws Exception {
        BufferedImage image;
        image = ImageIO.read(file);
        if (image == null) {
            return null;
        }
        BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        Result result=null;
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
        //优化精度
        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        //复杂模式，开启PURE_BARCODE模式
        hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
        try{
            result = new MultiFormatReader().decode(bitmap, hints);
        }catch(Exception e){
            e.printStackTrace();
            QRCodeMultiReader qc = new QRCodeMultiReader();//一张图片有多张二维码取最后一个
            Result[] r = qc.decodeMultiple(bitmap, hints);
            if(r!=null && r.length>0){
                String resultStrTemp = r[r.length-1].getText();
                return resultStrTemp;
            }
        }
        String resultStr = result.getText();
        return resultStr;
    }

 

来源：CSDN

作者：小天蝎2020

链接：https://blog.csdn.net/wlcxpftz/article/details/104009252