Java 类com.google.zxing.client.j2se.MatrixToImageConfig 实例源码

/**
 * Zxing图形码生成工具
 *
 * @param contents
 *            内容
 * @param barcodeFormat
 *            BarcodeFormat对象
 * @param format
 *            图片格式，可选[png,jpg,bmp]
 * @param width
 *            宽
 * @param height
 *            高
 * @param margin
 *            边框间距px
 * @param saveImgFilePath
 *            存储图片的完整位置，包含文件名
 * @return {boolean}
 */
public static boolean encode(String contents, BarcodeFormat barcodeFormat, Integer margin,
        ErrorCorrectionLevel errorLevel, String format, int width, int height, String saveImgFilePath) {
    Boolean bool = false;
    BufferedImage bufImg;
    Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
    // 指定纠错等级
    hints.put(EncodeHintType.ERROR_CORRECTION, errorLevel);
    hints.put(EncodeHintType.MARGIN, margin);
    hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
    try {
        // contents = new String(contents.getBytes("UTF-8"), "ISO-8859-1");
        BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, barcodeFormat, width, height, hints);
        MatrixToImageConfig config = new MatrixToImageConfig(0xFF000001, 0xFFFFFFFF);
        bufImg = MatrixToImageWriter.toBufferedImage(bitMatrix, config);
        bool = writeToFile(bufImg, format, saveImgFilePath);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return bool;
}

/**
     * Zxing图形码生成工具
     *
     * @param contents        内容
     * @param barcodeFormat   BarcodeFormat对象
     * @param format          图片格式，可选[png,jpg,bmp]
     * @param width           宽
     * @param height          高
     * @param margin          边框间距px
     * @param saveImgFilePath 存储图片的完整位置，包含文件名
     * @return
     */
    public Boolean encode(String contents, BarcodeFormat barcodeFormat, Integer margin, ErrorCorrectionLevel errorLevel, String format, int width, int height, String saveImgFilePath) {
        Boolean bool;
        BufferedImage bufImg;
        Map<EncodeHintType, Object> hints = new HashMap<>();
        // 指定纠错等级
        hints.put(EncodeHintType.ERROR_CORRECTION, errorLevel);
        hints.put(EncodeHintType.MARGIN, margin);
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        try {
//            contents = new String(contents.getBytes("UTF-8"), "ISO-8859-1");
            BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, barcodeFormat, width, height, hints);
            MatrixToImageConfig config = new MatrixToImageConfig(0xFF000001, 0xFFFFFFFF);
            bufImg = MatrixToImageWriter.toBufferedImage(bitMatrix, config);
            bool = this.writeToFile(bufImg, format, saveImgFilePath);
        } catch (Throwable t) {
            log.error("encode-ex:{}", t);
            throw Throwables.propagate(t);
        }
        return bool;
    }

/**
 * Testing utility that converts BitmapImage to BufferedImage type.
 */
protected static BufferedImage toBufferedImage(BitmapImage matrix) {
  MatrixToImageConfig config = new MatrixToImageConfig();
  int width = matrix.getWidth();
  int height = matrix.getHeight();
  BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_BINARY);
  int onColor = config.getPixelOnColor();
  int offColor = config.getPixelOffColor();
  for (int x = 0; x < width; x++) {
    for (int y = 0; y < height; y++) {
      image.setRGB(x, y, matrix.get(x, y) ? onColor : offColor);
    }
  }
  return image;
}

private void writeToStream(OutputStream stream) throws IOException, WriterException {
    MatrixToImageWriter.writeToStream(this.createMatrix(), this.imageType, stream, new MatrixToImageConfig(
            this.onColor, this.offColor));
}

/**
 * 创建 QRCode 图片文件
 *
 * @param file            图片
 * @param imageFormat     图片编码格式
 * @param encodeContent   QRCode 内容
 * @param imageSize       图片大小
 * @param foreGroundColor 前景色
 * @param backGroundColor 背景色
 * @throws WriterException
 * @throws IOException
 */
public static void createQRCodeImageFile(Path file, ImageFormat imageFormat, String encodeContent, Dimension imageSize, Color foreGroundColor, Color backGroundColor) throws WriterException, IOException {
    Assert.isTrue(FilenameUtils.getExtension(file.toString()).toUpperCase().equals(imageFormat.toString()), "文件扩展名和格式不一致");
    QRCodeWriter qrWrite = new QRCodeWriter();
    BitMatrix matrix = qrWrite.encode(encodeContent, BarcodeFormat.QR_CODE, imageSize.width, imageSize.height);
    MatrixToImageWriter.writeToPath(matrix, imageFormat.toString(), file, new MatrixToImageConfig(foreGroundColor.getRGB(), backGroundColor.getRGB()));
}

/**
 * 创建 QRCode 图片文件输出流，用于在线生成动态图片
 *
 * @param stream
 * @param imageFormat
 * @param encodeContent
 * @param imageSize
 * @param foreGroundColor
 * @param backGroundColor
 * @throws WriterException
 * @throws IOException
 */
public static void createQRCodeImageStream(OutputStream stream, ImageFormat imageFormat, String encodeContent, Dimension imageSize, Color foreGroundColor, Color backGroundColor) throws WriterException, IOException {

    QRCodeWriter qrWrite = new QRCodeWriter();
    BitMatrix matrix = qrWrite.encode(encodeContent, BarcodeFormat.QR_CODE, imageSize.width, imageSize.height);
    MatrixToImageWriter.writeToStream(matrix, imageFormat.toString(), stream, new MatrixToImageConfig(foreGroundColor.getRGB(), backGroundColor.getRGB()));
}