修改商户二维码上传，新增品牌，辅助条码，spu

pjcloud-common/pjcloud-common-core/src/main/java/com/bsd/pjcloud/common/core/util/QRCodeImageGenerator.java

@@ -0,0 +1,62 @@
+package com.bsd.pjcloud.common.core.util;
+
+import io.nayuki.qrcodegen.QrCode;
+import io.nayuki.qrcodegen.QrCode.Ecc;
+
+import javax.imageio.ImageIO;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+
+public class QRCodeImageGenerator {
+
+    public static byte[] generateQrCodeImage(String content, int size) throws Exception {
+        // 生成二维码对象
+        QrCode qrCode = QrCode.encodeText(content, Ecc.MEDIUM);
+
+        // 创建BufferedImage
+        BufferedImage image = toBufferedImage(qrCode, size);
+
+        // 将图片写入字节数组输出流
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        ImageIO.write(image, "png", outputStream);
+
+        return outputStream.toByteArray();
+    }
+
+    private static BufferedImage toBufferedImage(QrCode qrCode, int size) {
+        int scale = size / qrCode.size; // 计算像素点的缩放比例
+        int border = 4; // 留白边框宽度（单位：像素）
+
+        int imageSize = (qrCode.size + border * 2) * scale;
+        BufferedImage image = new BufferedImage(imageSize, imageSize, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g = image.createGraphics();
+
+        g.setColor(Color.WHITE); // 设置背景为白色
+        g.fillRect(0, 0, imageSize, imageSize);
+
+        g.setColor(Color.BLACK); // 设置二维码像素点为黑色
+        for (int y = 0; y < qrCode.size; y++) {
+            for (int x = 0; x < qrCode.size; x++) {
+                if (qrCode.getModule(x, y)) {
+                    g.fillRect((x + border) * scale, (y + border) * scale, scale, scale);
+                }
+            }
+        }
+
+        g.dispose();
+        return image;
+    }
+
+    public static void main(String[] args) throws Exception {
+        String content = "Hello, QR Code!";
+        int size = 300;
+
+        // 生成二维码字节流
+        byte[] imageBytes = generateQrCodeImage(content, size);
+
+        System.out.println("QR Code image generated, size: " + imageBytes.length + " bytes.");
+        // 可以保存到文件验证
+        // Files.write(Path.of("qrcode.png"), imageBytes);
+    }
+}