Java自动生成带log的二维码

我用的是google.zxing的这个插件来完成生成二维码的，还是很方便的。

我们需要引入google.zxing的jar包。地址为：1. https://mvnrepository.com/artifact/com.google.zxing/core

2. https://mvnrepository.com/artifact/com.google.zxing/javase

代码如下：

package asd;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import javax.imageio.ImageIO;
//import org.apache.commons.lang3.StringUtils;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

/**
 * 画制定logo和制定描述的二维码
 * 
 * @author songyz
 *
 */
public class ZXingCode {
    private static final int QRCOLOR = 0xFF000000; // 默认是黑色
    private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色
    private static final int WIDTH = 400; // 二维码宽
    private static final int HEIGHT = 400; // 二维码高

    // 用于设置QR二维码参数
    private static Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>() {
        private static final long serialVersionUID = 1L;
        {
            put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
            put(EncodeHintType.CHARACTER_SET, "utf-8");// 设置编码方式
        }
    };

    // 生成带logo的二维码图片
    public static void drawLogoQRCode(File logoFile, File codeFile, String qrUrl) {
        try {
            MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
            // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
            BitMatrix bm = multiFormatWriter.encode(qrUrl, BarcodeFormat.QR_CODE, WIDTH, HEIGHT, hints);
            BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);

            // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
            for (int x = 0; x < WIDTH; x++) {
                for (int y = 0; y < HEIGHT; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
                }
            }

            int width = image.getWidth();
            int height = image.getHeight();
            if (Objects.nonNull(logoFile) && logoFile.exists()) {
                // 构建绘图对象
                Graphics2D g = image.createGraphics();
                // 读取Logo图片
                BufferedImage logo = ImageIO.read(logoFile);
                // 开始绘制logo图片
                g.drawImage(logo, width * 2 / 5, height * 2 / 5, width * 2 / 10, height * 2 / 10, null);
                g.dispose();
                logo.flush();
            }



            image.flush();

            ImageIO.write(image, "png", codeFile); // TODO
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    public static void main(String[] args) throws WriterException {
        File logoFile = new File("E://erweima/QQ.jpg"); //logo
          File QrCodeFile = new File("E://erweima/"+ UUID.randomUUID()+".png");  //二维码生成地址以及名称格式
        String url = "https://www.baidu.com/?tn=96228755_hao_pg"; // 扫描二维码进入网址
        ZXingCode.drawLogoQRCode(logoFile, QrCodeFile, url);
    }

}

效果展示：

参考链接：https://blog.csdn.net/qq_22860341/article/details/80222591

Java自动生成带log的二维码

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