/** * 二维码生成 依赖2个jar包: zxing-core, zxing-javase */ @Test public void testZxcode() { String contents = "https://www.yf2017.top"; // 可以是链接、文字或其他 contents = "无论你是胖是瘦,你都无法否认夏天真的很热。"; Hashtablehints = new Hashtable (); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); // 字符编码 BitMatrix matrix = null; try { matrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, 300, 300, hints); } catch (WriterException e) { e.printStackTrace(); } File file = new File("D://qrcodeImage.png"); try { MatrixToImageWriter.writeToFile(matrix, "png", file); } catch (IOException e) { e.printStackTrace(); } } /** * 二维码内容读取 */ @Test public void testZxcode2() { File file = new File("D://qrcodeImage.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 hints = new Hashtable (); 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()); }
java二维码生成与读取
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