从mysql数据库中通过列号而不是JAVA中的列名来获取数据？

import java.sql.*;

public class MySQLColumnIndexExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, username, password);
             Statement stmt = conn.createStatement();
             ResultSet rs = stmt.executeQuery("SELECT * FROM mytable")) {

            ResultSetMetaData metaData = rs.getMetaData();
            int columnCount = metaData.getColumnCount();

            while (rs.next()) {
                for (int i = 1; i <= columnCount; i++) {
                    // 通过列号获取数据
                    Object value = rs.getObject(i);
                    System.out.println("Column " + i + ": " + value);
                }
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}