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| | | import java.io.IOException; |
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| | | import java.util.Hashtable; |
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| | | import static com.google.zxing.client.j2se.MatrixToImageConfig.BLACK; |
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| | | import static com.google.zxing.client.j2se.MatrixToImageConfig.WHITE; |
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| | | |
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| | | /** |
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| | | * @Author: dougang |
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| | | * @Description: |
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| | | |
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| | | /** |
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| | | * 生成二维码 |
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| | | * |
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| | | * @param contents |
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| | | * @param width |
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| | | * @param height |
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| | |
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| | | contents, BarcodeFormat.QR_CODE, width, height, hints); |
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| | | // 读取文件转换为字节数组 |
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| | | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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| | | |
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| | | BufferedImage image = toBufferedImage(bitMatrix); |
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| | | //切白边 |
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| | | image = deleteWhite(bitMatrix); |
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| | | |
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| | | //转换成png格式的IO流 |
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| | | ImageIO.write(image, "png", out); |
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| | | byte[] bytes = out.toByteArray(); |
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| | |
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| | | image.setRGB(x, y, matrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF); |
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| | | } |
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| | | } |
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| | | |
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| | | return image; |
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| | | } |
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| | | |
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| | | /** |
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| | | * 切白边 |
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| | | * |
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| | | * @param matrix |
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| | | * @return |
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| | | */ |
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| | | private static BufferedImage deleteWhite(BitMatrix matrix) { |
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| | | int[] rec = matrix.getEnclosingRectangle(); |
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| | | int resWidth = rec[2] + 1; |
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| | | int resHeight = rec[3] + 1; |
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| | | |
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| | | BitMatrix resMatrix = new BitMatrix(resWidth, resHeight); |
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| | | resMatrix.clear(); |
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| | | for (int i = 0; i < resWidth; i++) { |
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| | | for (int j = 0; j < resHeight; j++) { |
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| | | if (matrix.get(i + rec[0], j + rec[1])) |
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| | | resMatrix.set(i, j); |
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| | | } |
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| | | } |
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| | | |
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| | | int width = resMatrix.getWidth(); |
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| | | int height = resMatrix.getHeight(); |
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| | | BufferedImage image = new BufferedImage(width, height, |
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| | | BufferedImage.TYPE_INT_RGB); |
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| | | for (int x = 0; x < width; x++) { |
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| | | for (int y = 0; y < height; y++) { |
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| | | image.setRGB(x, y, resMatrix.get(x, y) ? BLACK : WHITE); |
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| | | } |
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| | | } |
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| | | return image; |
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| | | } |
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| | | |
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| | | public static void main(String[] args) { |
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| | | String binary = QRCodeUtil.creatRrCode("https://baidu.com", 200,200,12); |
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| | | String binary = QRCodeUtil.creatRrCode("http://192.168.2.146:8089/upload/saasmobile.html?hospitolId=1&departmentId=1&doctorId=1278159153159888898&childid=3001&diagnosticId=300101&puuid=dbd8b1c0-bdc5-11ea-b37d-1b33e9f3fd18", 200, 200, 2); |
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| | | System.out.println(binary); |
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| | | } |
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| | | } |
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