/** * 二维码 * @author wk * 2017年6月16日 */ @Service(value="QRCodeService") public class QRCodeService { private static final int BLACK = 0xff000000; private static final int WHITE = 0xFFFFFFFF; /** * 仅生成二维码,返回二维码图片网络地址,可直接扫码访问 * @param address:扫码地址 * @return */ public static String getQRCode(String address){ String filePostfix="png"; String today = DateUtils.formatDate("yyyyMMdd"); //以日期分文件夹 String fileName = UUID.randomUUID().toString().replaceAll("-", "")+ "." +filePostfix; String physicalPath = "E://fileUpload/" + today + fileName; //保存在本地的地址 File file = new File(physicalPath); if (!file.getParentFile().exists()) { file.getParentFile().mkdirs(); } encode(address, file, filePostfix, BarcodeFormat.QR_CODE, 500, 500, null); decode(file); String netUrl = SysConfig.nginxRootUrl + Globals.BAR + today + Globals.BAR + fileName; return netUrl; } /** * 生成QRCode二维码<br> * 在编码时需要将com.google.zxing.qrcode.encoder.Encoder.java中的<br> * static final String DEFAULT_BYTE_MODE_ENCODING = "ISO8859-1";<br> * 修改为UTF-8,否则中文编译后解析不了<br> * @param contents 二维码的内容 * @param file 二维码保存的路径,如:C://test_QR_CODE.png * @param filePostfix 生成二维码图片的格式:png,jpeg,gif等格式 * @param format qrcode码的生成格式 * @param width 图片宽度 * @param height 图片高度 * @param hints */ public static void encode(String contents, File file,String filePostfix, BarcodeFormat format, int width, int height, Map<EncodeHintType, ?> hints) { try { BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, format, width, height); writeToFile(bitMatrix, filePostfix, file); } catch (Exception e) { e.printStackTrace(); } } /** * 生成二维码图片<br> * * @param matrix * @param format * 图片格式 * @param file * 生成二维码图片位置 * @throws IOException */ public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException { BufferedImage image = toBufferedImage(matrix); ImageIO.write(image, format, file); } /** * 生成二维码内容<br> * * @param matrix * @return */ public static BufferedImage toBufferedImage(BitMatrix matrix) { int width = matrix.getWidth(); int height = matrix.getHeight(); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); for (int x = 0; x < width; x++) { for (int y = 0; y < height; y++) { image.setRGB(x, y, matrix.get(x, y) == true ? BLACK : WHITE); } } return image; } /** * 解析QRCode二维码 */ @SuppressWarnings("unchecked") public static void decode(File file) { try { BufferedImage image; try { image = ImageIO.read(file); if (image == null) { System.out.println("Could not decode image"); } LuminanceSource source = new BufferedImageLuminanceSource(image); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source)); Result result; @SuppressWarnings("rawtypes") Hashtable hints = new Hashtable(); //解码设置编码方式为:utf-8 hints.put(DecodeHintType.CHARACTER_SET, "utf-8"); result = new MultiFormatReader().decode(bitmap, hints); String resultStr = result.getText(); System.out.println("解析后内容:" + resultStr); } catch (IOException ioe) { System.out.println(ioe.toString()); } catch (ReaderException re) { System.out.println(re.toString()); } } catch (Exception ex) { System.out.println(ex.toString()); } } }