Java 生成二维码

/**********
  * 生成二维码
  */
 public static void main(String[] args) {
  String content = "酒至颜自解，声和心亦宣。";
  Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
  hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
  BitMatrix matrix = null;
  try {
   matrix = new MultiFormatWriter().encode(content,
     BarcodeFormat.QR_CODE, 300, 100, hints);
  } catch (WriterException e) {
   e.printStackTrace();
  }

  File file = new File("D:/qrimage.png");
  try {
   MatrixToImageWriter.writeToFile(matrix, "png", file);
  } catch (IOException e) {
   e.printStackTrace();
  }

 }

/******
  * 解析这个二维码
  * @param args
  */
 public static void main(String[] args) {
  File file = new File("D:/qrimage.png");
  BufferedImage bufferedImage = null;

  try {
   bufferedImage = ImageIO.read(file);
  } catch (IOException e) {
   e.printStackTrace();
  }

  LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage);
  BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

  Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
  hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
  Result result = null;

  try {
   result = new MultiFormatReader().decode(bitmap, hints);
  } catch (NotFoundException e) {
   e.printStackTrace();
  }

  System.out.println(result.toString());
 }