/**
  * 解析二维码(QRCode)
  *
  * @param imgPath 图片路径
  * @return
  */
 public String decodeQRCode(String imgPath) {
   // QRCode 二维码图片的文件
   File imageFile = new File(imgPath);
   BufferedImage bufImg = null;
   String content = null;
   try {
     bufImg = ImageIO.read(imageFile);
     QRCodeDecoder decoder = new QRCodeDecoder();
     content = new String(decoder.decode(new QrcodeImage(bufImg)), Charset.defaultCharset());
   } catch (IOException e) {
     e.printStackTrace();
   } catch (DecodingFailedException dfe) {
     dfe.printStackTrace();
   }
   return content;
 }
 /**
  * 解析二维码(QRCode)
  *
  * @param input 输入流
  * @return
  */
 public String decodeQRCode(InputStream input) {
   BufferedImage bufImg = null;
   String content = null;
   try {
     bufImg = ImageIO.read(input);
     QRCodeDecoder decoder = new QRCodeDecoder();
     content = new String(decoder.decode(new QrcodeImage(bufImg)), Charset.defaultCharset());
   } catch (IOException e) {
     System.out.println("Error: " + e.getMessage());
     e.printStackTrace();
   } catch (DecodingFailedException dfe) {
     System.out.println("Error: " + dfe.getMessage());
     dfe.printStackTrace();
   }
   return content;
 }
 /**
  * 解析二维码(QRCode)
  *
  * @param imgPath 图片路径
  * @return
  */
 public String decoderQRCode(String imgPath) {
   // QRCode 二维码图片的文件
   File imageFile = new File(imgPath);
   BufferedImage bufImg = null;
   String content = null;
   try {
     bufImg = ImageIO.read(imageFile);
     QRCodeDecoder decoder = new QRCodeDecoder();
     content = new String(decoder.decode(new CodeImage(bufImg)), "utf-8");
   } catch (IOException e) {
     System.out.println("Error: " + e.getMessage());
     e.printStackTrace();
   } catch (DecodingFailedException dfe) {
     System.out.println("Error: " + dfe.getMessage());
     dfe.printStackTrace();
   }
   return content;
 }