如何从java中的数组列表生成二维码并存储到数据库？

import java.util.ArrayList;

ArrayList<String> dataList = new ArrayList<>();
dataList.add("数据1");
dataList.add("数据2");
dataList.add("数据3");

import com.google.zxing.BarcodeFormat;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;

String data = dataList.toString(); // 将数组列表转换为字符串
String charset = "UTF-8"; // 字符编码

BitMatrix bitMatrix = new MultiFormatWriter().encode(data, BarcodeFormat.QR_CODE, 200, 200);

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

String url = "jdbc:mysql://localhost:3306/database"; // 数据库连接URL
String username = "username"; // 数据库用户名
String password = "password"; // 数据库密码

// 创建数据库连接
Connection connection = DriverManager.getConnection(url, username, password);

// 准备SQL语句
String sql = "INSERT INTO qrcodes (data, image) VALUES (?, ?)";

// 创建PreparedStatement对象
PreparedStatement statement = connection.prepareStatement(sql);

// 设置参数
statement.setString(1, data);
statement.setBinaryStream(2, new ByteArrayInputStream(toByteArray(bitMatrix)), bitMatrix.getWidth() * bitMatrix.getHeight());

// 执行插入操作
int rowsInserted = statement.executeUpdate();

// 关闭连接和语句
statement.close();
connection.close();

import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import javax.imageio.ImageIO;

public static byte[] toByteArray(BitMatrix bitMatrix) {
    BufferedImage image = MatrixToImageWriter.toBufferedImage(bitMatrix);
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    try {
        ImageIO.write(image, "png", outputStream);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return outputStream.toByteArray();
}