/**

 * 生成一个二维码图片 * * @param width * @param height * @param content * @return * @throws WriterException * @throws IOException */public static byte[] createQRCode(int width, int height, String content) throws WriterException, IOException {    // 二维码根本参数设置    Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");// 设置编码字符集utf-8    hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);// 设置纠错等级L/M/Q/H,纠错等级越高越不易辨认,以后设置等级为最高等级H    hints.put(EncodeHintType.MARGIN, 0);// 可设置范畴为0-10,但仅四个变动0 1(2) 3(4 5 6) 7(8 9 10)    // 生成图片类型为QRCode    BarcodeFormat format = BarcodeFormat.QR_CODE;    // 创立位矩阵对象    BitMatrix bitMatrix = new MultiFormatWriter().encode(content, format, width, height, hints);    // 设置位矩阵转图片的参数    // MatrixToImageConfig config = new MatrixToImageConfig(Color.black.getRGB(), Color.white.getRGB());    // 位矩阵对象转流对象    ByteArrayOutputStream os = new ByteArrayOutputStream();    MatrixToImageWriter.writeToStream(bitMatrix, "png", os);    return os.toByteArray();}public static void main(String[] args) throws WriterException, IOException {    byte[] b = createQRCode(100, 100, "http://www.ip111.cn/");    OutputStream os = new FileOutputStream("D:\\bestme.png");    os.write(b);    os.close();}
 //须要引入Qrcode的jar包应用,展现图片生成的二维码//    private static boolean encode(String srcValue, String qrcodePicfilePath) {//        int MAX_DATA_LENGTH = 200;//        byte[] d = srcValue.getBytes();//        int dataLength = d.length;//        int imageWidth = 113;//        int imageHeight = imageWidth;//        BufferedImage bi = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);//        Graphics2D g = bi.createGraphics();//        g.setBackground(Color.WHITE);//        g.clearRect(0, 0, imageWidth, imageHeight);//        g.setColor(Color.BLACK);//        if (dataLength > 0 && dataLength <= MAX_DATA_LENGTH) {//            Qrcode qrcode = new Qrcode();//            qrcode.setQrcodeErrorCorrect('M');//            qrcode.setQrcodeEncodeMode('B');//            qrcode.setQrcodeVersion(5);//            boolean[][] b = qrcode.calQrcode(d);//            int qrcodeDataLen = b.length;//            for (int i = 0; i < qrcodeDataLen; i++) {//                for (int j = 0; j < qrcodeDataLen; j++) {//                    if (b[j][i]) {//                        g.fillRect(j * 3 + 2, i * 3 + 2, 3, 3);//                    }//                }//            }//            System.out.println("二维码胜利生成!!");////        } else {//            System.out.println(dataLength + "大于" + MAX_DATA_LENGTH);//            return false;//        }//        g.dispose();//        bi.flush();//        File f = new File(qrcodePicfilePath);//        String suffix = f.getName().substring(f.getName().indexOf(".") + 1, f.getName().length());//        System.out.println("二维码输入胜利!!");//        try {//            ImageIO.write(bi, suffix, f);//        } catch (IOException ioe) {//            System.out.println("二维码生成失败" + ioe.getMessage());//            return false;//        }//        return true;////    }