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perf: 优化设备二维码显示效果

This commit is contained in:
曹鹏飞 2025-11-03 11:10:28 +08:00
parent 50b2d81ec5
commit d6ff7814fc
2 changed files with 14 additions and 11 deletions
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2
nflg-mobilebroken-admin/src/main/java/com/nflg/mobilebroken/admin/service/DeviceQRCodeService.java
View File

@ -18,6 +18,6 @@ public class DeviceQRCodeService {
public byte[] generate(String deviceNo, String modelNo) throws Exception {
ParamConfig config = paramConfigService.lambdaQuery().eq(ParamConfig::getCode, "DeviceQRCodeHost").one();
return QRCodeUtil.generateDeviceQRCode(deviceNo ,StrUtil.format(config.getValue(), deviceNo,modelNo),200, 200);
return QRCodeUtil.generateDeviceQRCode(deviceNo, StrUtil.format(config.getValue(), deviceNo, modelNo), 550, 550);
}
}

23
nflg-mobilebroken-common/src/main/java/com/nflg/mobilebroken/common/util/QRCodeUtil.java
View File

@ -11,6 +11,7 @@ import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.Hashtable;
public class QRCodeUtil {
@ -48,16 +49,16 @@ public class QRCodeUtil {
/**
* 为图片添加边框和文字
*
* @param qrImage 原始二维码图片
* @param text 要添加的文字
* @return 带边框和文字的新图片
*/
private static BufferedImage addBorderAndText(BufferedImage qrImage, String text) {
private static BufferedImage addBorderAndText(BufferedImage qrImage, String text) throws Exception {
int borderSize = 1;
int extend=10;
int newWidth = qrImage.getWidth() + extend;
int newHeight = qrImage.getHeight() + extend;
int extend1 = 10;
int extend2 = 50;
int newWidth = qrImage.getWidth() + extend1;
int newHeight = qrImage.getHeight() + extend2;
// 创建新画布（扩大尺寸以容纳边框）
BufferedImage newImage = new BufferedImage(
newWidth,
@ -65,11 +66,12 @@ public class QRCodeUtil {
BufferedImage.TYPE_INT_RGB
);
Graphics2D g = newImage.createGraphics();
g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
// 填充边框颜色
g.setColor(Color.WHITE);
g.fillRect(0, 0, newWidth, newHeight);
// 绘制原始二维码（居中）
g.drawImage(qrImage, borderSize + extend / 2, borderSize, null);
g.drawImage(qrImage, borderSize + extend1 / 2, borderSize, null);
// 绘制边框
g.setColor(Color.BLACK);
g.setStroke(new BasicStroke(borderSize));
@ -79,13 +81,14 @@ public class QRCodeUtil {
g.drawLine(0, newHeight - borderSize, newWidth, newHeight - borderSize);
// 添加文字（居中显示）
g.setColor(Color.BLACK);
g.setFont(new Font("Arial", Font.PLAIN, 14));
g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
InputStream is = QRCodeUtil.class.getResourceAsStream("/fonts/simsun.ttc");
Font baseFont = Font.createFont(Font.TRUETYPE_FONT, is).deriveFont(Font.BOLD, 45.0f);
g.setFont(baseFont);
FontMetrics fm = g.getFontMetrics();
int textWidth = fm.stringWidth(text);
int x = (newImage.getWidth() - textWidth) / 2;
int y = newImage.getHeight() - 15;
g.drawString(text, x, y);
g.drawString(text, x, qrImage.getHeight() + (extend2 - fm.getAscent()) / 2);
is.close();
g.dispose();
return newImage;
}