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@@ -5,14 +5,20 @@ import com.google.zxing.EncodeHintType;
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import com.google.zxing.MultiFormatWriter;
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import com.google.zxing.WriterException;
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import com.google.zxing.common.BitMatrix;
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+import com.google.zxing.qrcode.QRCodeWriter;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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+import javax.imageio.ImageIO;
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+import java.awt.*;
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+import java.awt.image.BufferedImage;
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+import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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public class QRCodeUtils {
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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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@@ -47,6 +53,77 @@ public class QRCodeUtils {
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}
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/**
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+ * 生成带有底部文字的二维码
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+ *
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+ * @param content 二维码的内容
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+ * @param text 底部文字
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+ * @throws IOException
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+ */
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+ public static byte[] createCodeWithText(String content, String text) throws IOException {
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+ // 二维码的宽高
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+ int width = 300;
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+ int height = 300;
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+
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+ // 其他参数，如字符集编码
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+ Map<EncodeHintType, Object> hints = new HashMap<>();
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+ hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
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+ hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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+ hints.put(EncodeHintType.MARGIN, 0);
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+
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+ BitMatrix bitMatrix = null;
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+ try {
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+ // 生成二维码矩阵
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+ QRCodeWriter writer = new QRCodeWriter();
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+ bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
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+ } catch (WriterException e) {
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+ e.printStackTrace();
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+ }
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+
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+ // 创建图像并绘制二维码
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+ int imgWidth = width;
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+ int imgHeight = height + 30; // 增加额外空间用于文本
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+ BufferedImage image = new BufferedImage(imgWidth, imgHeight, BufferedImage.TYPE_INT_RGB);
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+ Graphics2D graphics = image.createGraphics();
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+
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+ // 设置背景色
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+ graphics.setColor(Color.WHITE);
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+ graphics.fillRect(0, 0, imgWidth, imgHeight);
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+
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+ // 绘制二维码
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+ graphics.setColor(Color.BLACK);
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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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+ if (bitMatrix.get(x, y)) {
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+ graphics.fillRect(x, y, 1, 1);
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+ }
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+ }
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+ }
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+
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+ // 添加底部文字，使用合适的字体
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+ graphics.setColor(Color.BLACK);
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+ // 使用支持中文的字体
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+ Font font = new Font("Microsoft YaHei", Font.BOLD, 16);
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+ graphics.setFont(font);
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+ FontMetrics metrics = graphics.getFontMetrics(font);
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+ int textWidth = metrics.stringWidth(text);
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+ // 在底部居中绘制文本
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+ graphics.drawString(text, (imgWidth - textWidth) / 2, height + 20);
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+
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+ graphics.dispose();
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+
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+ // 保存图像
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+ try {
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+ ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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+// ImageIO.write(image, "png", new File(filePath));
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+ ImageIO.write(image, "png", outputStream);
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+ return outputStream.toByteArray();
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ }
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+ return null;
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+ }
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+
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+ /**
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* 删除生成的二维码周围的白边，根据审美决定是否删除
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*
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* @param matrix BitMatrix对象
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