java-二维码的生成与解析

1.部署依赖

        
            com.google.zxing
            javase
            3.3.0
        

2.二维码的生成

        String url="www.baidu.com";//二维码的内容
        int widthHeight=500;
        //二维码生成的路劲和名字
        String filePathName="C:\users\asus\desktop\"+System.currentTimeMillis()+".jpg";

        Path path= FileSystems.getDefault().getPath(filePathName);
        QRCodeWriter writer=new QRCodeWriter();
        BitMatrix matrix;
        try {
            matrix = writer.encode(url, BarcodeFormat.QR_CODE,widthHeight,widthHeight);
            try {
                //已生成二维码
                MatrixToImageWriter.writeToPath(matrix,"JPG",path);
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (WriterException e) {
            e.printStackTrace();
        }
        System.out.println("完成");

3.二维码的解析

        //要解析的二维码路径
        String filename="C:\users\asus\desktop\1651062084114.jpg";
        try {
            BufferedImage image= ImageIO.read(new File(filename));
            LuminanceSource source=new BufferedImageLuminanceSource(image);
            BinaryBitmap bitmap=new BinaryBitmap(new HybridBinarizer(source));
            Map map=new HashMap();
            map.put(DecodeHintType.CHARACTER_SET,"utf-8");
            try {
                Result result= new MultiFormatReader().decode(bitmap,map);
                System.out.println("解析结果:"+result.toString());
                System.out.println("二维码格式"+result.getBarcodeFormat());
                System.out.println("文本内容"+result.getText());
                System.out.println(result.getNumBits());
            } catch (NotFoundException e) {
                e.printStackTrace();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }