ZxingImageUtils 工具类

import com.google.zxing.common.BitMatrix;import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;/*** @author wujie* @date 2023/3/10 10:59*/
public class ZxingImageUtils {private static final int BLACK = 0xFF000000;//用于设置图案的颜色private static final int WHITE = 0xFFFFFFFF; //用于背景色private ZxingImageUtils() {}public static BufferedImage toBufferedImage(BitMatrix matrix) {int width = matrix.getWidth();int height = matrix.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,  (matrix.get(x, y) ? WHITE : BLACK));}}return image;}/*** 传入的图像必须是正方形的 才会 圆形 如果是长方形的比例则会变成椭圆的* @return* @throws IOException*/public static BufferedImage convertCircular(BufferedImage bi1)  {// 透明底的图片BufferedImage bi2 = new BufferedImage(bi1.getWidth(), bi1.getHeight(), BufferedImage.TYPE_INT_RGB);Ellipse2D.Double shape = new Ellipse2D.Double(0, 0, bi1.getWidth(), bi1.getHeight());Graphics2D g2 = bi2.createGraphics();g2.fillRect(0,0,bi1.getWidth(),bi1.getHeight());g2.setClip(shape);// 使用 setRenderingHint 设置抗锯齿g2.drawImage(bi1, 0, 0, null);g2.dispose();return bi2;}public static void writeToFile(BitMatrix matrix, String format, File file,String avatar) throws IOException {BufferedImage image = toBufferedImage(matrix);// 这里需要圆形就用 convertCircular 正方形矩阵的就用toBufferedImageBufferedImage bufferedImage = convertCircular(image);//设置logo图标LogoConfig logoConfig = new LogoConfig();bufferedImage = logoConfig.LogoMatrix(bufferedImage,avatar);if (!ImageIO.write(bufferedImage, format, file)) {throw new IOException("Could not write an image of format " + format + " to " + file);}else{System.out.println("图片生成成功！");}}public static void writeToStream(BitMatrix matrix, String format, OutputStream stream,String avatar) throws IOException {BufferedImage image = toBufferedImage(matrix);//设置logo图标LogoConfig logoConfig = new LogoConfig();image = logoConfig.LogoMatrix(image,avatar);if (!ImageIO.write(image, format, stream)) {throw new IOException("Could not write an image of format " + format);}}}

带logo

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;/*** @author wujie* @date 2023/3/10 11:01*/
public class LogoConfig {/*** 设置 logo* @param matrixImage 源二维码图片* @return 返回带有logo的二维码图片* @throws IOException* @author Administrator sangwenhao*/public BufferedImage LogoMatrix(BufferedImage matrixImage,String avatar) throws IOException {/*** 读取二维码图片，并构建绘图对象*/Graphics2D g2 = matrixImage.createGraphics();int matrixWidth = matrixImage.getWidth();int matrixHeight = matrixImage.getHeight();/*** 读取Logo图片*/URL url = new URL(avatar);BufferedImage logo = ImageIO.read(url);//开始绘制图片g2.drawImage(logo,matrixWidth/5*2,matrixHeight/5*2, matrixWidth/5, matrixHeight/5, null);//绘制BasicStroke stroke = new BasicStroke(5,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND);g2.setStroke(stroke);// 设置笔画对象//指定弧度的圆角矩形Ellipse2D.Float round = new Ellipse2D.Float(matrixWidth/5*2, matrixHeight/5*2, matrixWidth/5, matrixHeight/5);g2.setColor(Color.white);g2.draw(round);// 绘制圆弧矩形g2.dispose();matrixImage.flush() ;return matrixImage ;}}

test

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;
import com.zhengbai.atlas.common.util.IdUtils;import java.io.File;
import java.io.IOException;
import java.util.Hashtable;/*** @author wujie* @date 2023/3/10 11:00*/
public class EncodeTest {public static void generateImage(String contents,String avatar) throws IOException, WriterException {// contents 二维码内容int width = 430; // 二维码图片宽度 300int height = 430; // 二维码图片高度300String format = "jpg";// 二维码的图片格式 jpgHashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();// 指定纠错等级,纠错级别（L 7%、M 15%、Q 25%、H 30%）hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 内容所使用字符集编码hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
//		hints.put(EncodeHintType.MAX_SIZE, 350);//设置图片的最大值
//	    hints.put(EncodeHintType.MIN_SIZE, 100);//设置图片的最小值hints.put(EncodeHintType.MARGIN, 1);//设置二维码边的空度，非负数BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,//要编码的内容//编码类型，目前zxing支持：Aztec 2D,CODABAR 1D format,Code 39 1D,Code 93 1D ,Code 128 1D,//Data Matrix 2D , EAN-8 1D,EAN-13 1D,ITF (Interleaved Two of Five) 1D,//MaxiCode 2D barcode,PDF417,QR Code 2D,RSS 14,RSS EXPANDED,UPC-A 1D,UPC-E 1D,UPC/EAN extension,UPC_EAN_EXTENSIONBarcodeFormat.QR_CODE,width, //条形码的宽度height, //条形码的高度hints);//生成条形码时的一些配置,此项可选// 生成二维码File outputFile = new File("E:\\images" + File.separator + IdUtils.uuid()+".jpg");//指定输出路径ZxingImageUtils.writeToFile(bitMatrix, format, outputFile,avatar);}//    public static void main(String[] args) throws Exception {
//        try {
//            generateImage("我是图片20981209384","https://img-blog.csdnimg.cn/ac222b87a8714bf2ae64a3386b235393.png");
//        } catch (Exception e) {
//            // TODO: handle exception
//            e.printStackTrace();
//        }
//    }}