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+package org.dromara.system.utils;
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+
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+import cn.hutool.extra.qrcode.BufferedImageLuminanceSource;
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+import com.google.zxing.*;
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+import com.google.zxing.common.BitMatrix;
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+import com.google.zxing.common.HybridBinarizer;
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+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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+import org.dromara.common.core.utils.DateUtils;
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+
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+import javax.imageio.ImageIO;
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+import java.awt.*;
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+import java.awt.geom.RoundRectangle2D;
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+import java.awt.image.BufferedImage;
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+import java.io.File;
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+import java.io.OutputStream;
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+import java.util.Hashtable;
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+import java.util.UUID;
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+
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+/**
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+ * @Author: tjf
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+ * @Date: 2023/9/13 14:44
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+ * @Describe:
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+ */
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+public class QRCodeUtils {
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+ private static final String CHARSET = "utf-8";
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+ private static final String FORMAT_NAME = "JPG";
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+ // 二维码尺寸
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+ private static final int QRCODE_SIZE = 300;
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+ // LOGO宽度
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+ private static final int WIDTH = 60;
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+ // LOGO高度
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+ private static final int HEIGHT = 60;
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+
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+ private static BufferedImage createImage(String content, String imgPath,
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+ boolean needCompress) throws Exception {
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+ Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
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+ hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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+ hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
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+ hints.put(EncodeHintType.MARGIN, 1);
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+ BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
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+ BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);
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+ int width = bitMatrix.getWidth();
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+ int height = bitMatrix.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, bitMatrix.get(x, y) ? 0xFF000000
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+ : 0xFFFFFFFF);
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+ }
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+ }
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+ if (imgPath == null || "".equals(imgPath)) {
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+ return image;
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+ }
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+ // 插入图片
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+ QRCodeUtils.insertImage(image, imgPath, needCompress);
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+ return image;
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+ }
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+
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+ /**
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+ * 插入LOGO
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+ *
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+ * @param source 二维码图片
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+ * @param imgPath LOGO图片地址
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+ * @param needCompress 是否压缩
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+ * @throws Exception
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+ */
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+ private static void insertImage(BufferedImage source, String imgPath,
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+ boolean needCompress) throws Exception {
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+ File file = new File(imgPath);
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+ if (!file.exists()) {
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+ System.err.println("" + imgPath + " 该文件不存在！");
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+ return;
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+ }
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+ Image src = ImageIO.read(new File(imgPath));
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+ int width = src.getWidth(null);
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+ int height = src.getHeight(null);
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+ if (needCompress) { // 压缩LOGO
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+ if (width > WIDTH) {
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+ width = WIDTH;
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+ }
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+ if (height > HEIGHT) {
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+ height = HEIGHT;
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+ }
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+ Image image = src.getScaledInstance(width, height,
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+ Image.SCALE_SMOOTH);
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+ BufferedImage tag = new BufferedImage(width, height,
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+ BufferedImage.TYPE_INT_RGB);
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+ Graphics g = tag.getGraphics();
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+ g.drawImage(image, 0, 0, null); // 绘制缩小后的图
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+ g.dispose();
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+ src = image;
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+ }
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+ // 插入LOGO
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+ Graphics2D graph = source.createGraphics();
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+ int x = (QRCODE_SIZE - width) / 2;
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+ int y = (QRCODE_SIZE - height) / 2;
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+ graph.drawImage(src, x, y, width, height, null);
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+ Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
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+ graph.setStroke(new BasicStroke(3f));
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+ graph.draw(shape);
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+ graph.dispose();
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+ }
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+
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+ /**
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+ * 生成二维码(内嵌LOGO)
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+ *
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+ * @param content 内容
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+ * @param imgPath LOGO地址
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+ * @param destPath 存放目录
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+ * @param needCompress 是否压缩LOGO
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+ * @throws Exception
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+ */
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+ public static String encode(String content, String imgPath, String destPath,
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+ boolean needCompress) throws Exception {
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+ BufferedImage image = QRCodeUtils.createImage(content, imgPath,
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+ needCompress);
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+ String date = DateUtils.datePath();
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+ destPath = destPath+"/" + date;
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+ mkdirs(destPath);
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+ String file = UUID.randomUUID() + ".jpg";
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+ File fileQR = new File(destPath + "/" + file);
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+ ImageIO.write(image, FORMAT_NAME, fileQR);
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+ return "/profile/qrUpload/"+date+"/"+file;
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+ }
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+
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+
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+ /**
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+ * 当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
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+ *
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+ * @param destPath 存放目录
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+ * @date 2013-12-11 上午10:16:36
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+ */
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+ public static void mkdirs(String destPath) {
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+ File file = new File(destPath);
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+ //当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
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+ if (!file.exists() && !file.isDirectory()) {
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+ file.mkdirs();
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+ }
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+ }
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+
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+ /**
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+ * 生成二维码(内嵌LOGO)
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+ *
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+ * @param content 内容
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+ * @param imgPath LOGO地址
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+ * @param destPath 存储地址
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+ * @throws Exception
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+ */
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+ public static void encode(String content, String imgPath, String destPath)
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+ throws Exception {
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+ QRCodeUtils.encode(content, imgPath, destPath, false);
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+ }
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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 content 内容
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+ * @param destPath 存储地址
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+ * @param needCompress 是否压缩LOGO
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+ * @throws Exception
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+ */
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+ public static void encode(String content, String destPath,
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+ boolean needCompress) throws Exception {
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+ QRCodeUtils.encode(content, null, destPath, needCompress);
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+ }
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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 content 内容
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+ * @param destPath 存储地址
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+ * @throws Exception
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+ */
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+ public static void encode(String content, String destPath) throws Exception {
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+ QRCodeUtils.encode(content, null, destPath, false);
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+ }
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+
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+ /**
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+ * 生成二维码(内嵌LOGO)
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+ *
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+ * @param content 内容
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+ * @param imgPath LOGO地址
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+ * @param output 输出流
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+ * @param needCompress 是否压缩LOGO
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+ * @throws Exception
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+ */
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+ public static void encode(String content, String imgPath,
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+ OutputStream output, boolean needCompress) throws Exception {
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+ BufferedImage image = QRCodeUtils.createImage(content, imgPath,
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+ needCompress);
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+ ImageIO.write(image, FORMAT_NAME, output);
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+ }
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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 content 内容
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+ * @param output 输出流
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+ * @throws Exception
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+ */
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+ public static void encode(String content, OutputStream output)
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+ throws Exception {
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+ QRCodeUtils.encode(content, null, output, false);
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+ }
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+
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+ /**
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+ * 解析二维码
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+ *
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+ * @param file 二维码图片
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+ * @return
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+ * @throws Exception
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+ */
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+ public static String decode(File file) throws Exception {
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+ BufferedImage image;
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+ image = ImageIO.read(file);
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+ if (image == null) {
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+ return null;
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+ }
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+ BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(
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+ image);
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+ BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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+ Result result;
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+ Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
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+ hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
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+ result = new MultiFormatReader().decode(bitmap, hints);
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+ String resultStr = result.getText();
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+ return resultStr;
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+ }
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+
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+ /**
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+ * 解析二维码
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+ *
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+ * @param path 二维码图片地址
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+ * @return
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+ * @throws Exception
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+ */
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+ public static String decode(String path) throws Exception {
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+ return QRCodeUtils.decode(new File(path));
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+ }
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+}
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Administrator