springboot集成二月卡

SpringBoot可以通过添加相应的依赖来集成二维码生成功能。你可以使用"com.google.zxing"库来生成二维码。首先，在你的项目中添加以下依赖：

<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>core</artifactId>
    <version>3.4.1</version>
</dependency>
<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>javase</artifactId>
    <version>3.4.1</version>
</dependency>

然后，你可以创建一个工具类来生成二维码，示例代码如下：

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class QRCodeGenerator {
    private static final int WIDTH = 300;
    private static final int HEIGHT = 300;
    private static final String FORMAT = "png";

    public static void generateQRCode(String text, String outputPath) throws IOException {
        Map<EncodeHintType, Object> hints = new HashMap<>();
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);

        BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, WIDTH, HEIGHT, hints);

        BufferedImage qrCodeImage = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
        qrCodeImage.createGraphics();

        Graphics2D graphics = (Graphics2D) qrCodeImage.getGraphics();
        graphics.setColor(Color.WHITE);
        graphics.fillRect(0, 0, WIDTH, HEIGHT);
        graphics.setColor(Color.BLACK);

        for (int i = 0; i < WIDTH; i++) {
            for (int j = 0; j < HEIGHT; j++) {
                if (bitMatrix.get(i, j)) {
                    graphics.fillRect(i, j, 1, 1);
                }
            }
        }

        ImageIO.write(qrCodeImage, FORMAT, new File(outputPath));
    }
}

你可以通过调用`generateQRCode`方法来生成二维码，其中`text`参数是要生成二维码的内容，`outputPath`参数是输出文件路径。