qrcode/src/main/java/com/xiongyingqi/qrcode/QRCode.java
public BufferedImage toBufferedImageContents(BitMatrix bitMatrix) {
        int width = bitMatrix.getWidth();
        int height = bitMatrix.getHeight();
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                image.setRGB(x, y, bitMatrix.get(x, y) == true ? BLACK : WHITE);
            }
        }
        return image;
    }
public BufferedImage toBufferedImageContents(BitMatrix bitMatrix) {
        int width = bitMatrix.getWidth();
        int height = bitMatrix.getHeight();
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                image.setRGB(x, y, bitMatrix.get(x, y) == true ? BLACK : WHITE);
            }
        }
        return image;
    }
生成二维码内容

@param bitMatrix
@return