java生产订单二维码

以下是Java生成订单二维码的示例代码：

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;

public class QRCodeGenerator {
    private static final String QR_CODE_IMAGE_PATH = "G:/测试/QRCode.png";

    private static void generateQRCodeImage(String text, int width, int height, String filePath)
            throws WriterException, IOException {
        Map<EncodeHintType, Object> hintMap = new HashMap<EncodeHintType, Object>();
        hintMap.put(EncodeHintType.CHARACTER_SET, "UTF-8");

        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height, hintMap);
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
            }
        }

        File qrFile = new File(filePath);
        ImageIO.write(image, "png", qrFile);
    }

    public static void main(String[] args) {
        try {
            generateQRCodeImage("订单编号：1234567890", 350, 350, QR_CODE_IMAGE_PATH);
            System.out.println("二维码生成成功！");
        } catch (WriterException e) {
            System.out.println("二维码生成失败，WriterException :: " + e.getMessage());
        } catch (IOException e) {
            System.out.println("二维码生成失败，IOException :: " + e.getMessage());
        }
    }
}

运行该代码将在指定路径下生成一个名为QRCode.png的二维码图片，其中包含了订单编号信息。