java工具类生成二维码

Posted 2022-06-15 tuituji27

/**
 * 生成二维码图片
 * @param text  扫描二维码后跳转的url
 * @param width 图片宽度
 * @param height 图片高度
 * @param filePath 图片生成路径  比如"G://pic//1-1G124104A5.jpg"
 * @throws WriterException
 * @throws IOException
 */
public static void generateQRCodeImage(String text, int width, int height, String filePath)
        throws WriterException, IOException 
    QRCodeWriter qrCodeWriter = new QRCodeWriter();

    BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height);

    Path path = FileSystems.getDefault().getPath(filePath);

    MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);