Java制作二维码代码，中间带logo图片，可设置logo大小

来源：互联网发布：计算分组数据的标准差编辑：程序博客网时间：2024/05/16 11:48

public static int createQRCode(String content, String imgPath,String logo) {

try {

Qrcode qrcodeHandler = new Qrcode();

qrcodeHandler.setQrcodeErrorCorrect('M');

qrcodeHandler.setQrcodeEncodeMode('B');

qrcodeHandler.setQrcodeVersion(7);

// System.out.println(content);

byte[] contentBytes = content.getBytes("gb2312");

//构造一个BufferedImage对象设置宽、高

BufferedImage bufImg = new BufferedImage(140, 140, BufferedImage.TYPE_INT_RGB);

Graphics2D gs = bufImg.createGraphics();

gs.setBackground(Color.WHITE);

gs.clearRect(0, 0, 140, 140);

// 设定图像颜色 > BLACK

gs.setColor(Color.BLACK);

// 设置偏移量不设置可能导致解析出错

int pixoff = 2;

// 输出内容 > 二维码

if (contentBytes.length > 0 && contentBytes.length < 120) {

boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);

for (int i = 0; i < codeOut.length; i++) {

for (int j = 0; j < codeOut.length; j++) {

if (codeOut[j][i]) {

gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);

}

} else {

System.err.println("QRCode content bytes length = "+ contentBytes.length + " not in [ 0,120 ]. ");

return -1;

}

Image img = ImageIO.read(new File(logo));//实例化一个Image对象。

gs.drawImage(img, 44, 55, 49, 30, null);

gs.dispose();

bufImg.flush();

// 生成二维码QRCode图片

File imgFile = new File(imgPath);

ImageIO.write(bufImg, "png", imgFile);

}catch (Exception e){

e.printStackTrace();

return -100;

}

return 0;

}

//添加轮胎天使的logo

createQRCode("http://www.tireangel.com/android/TireAngelDemo.apk","http://www.tireangel.com/images/qrCode.jpg","http://www.tireangel.com/images/logo.jpg");

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