如何使用JDBC中的PreparedStatement在表中存储长值？

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

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

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

            // 创建PreparedStatement对象
            String sql = "INSERT INTO mytable (id, long_value) VALUES (?, ?)";
            PreparedStatement statement = connection.prepareStatement(sql);

            // 设置参数值
            statement.setInt(1, 1);
            statement.setString(2, "This is a long value");

            // 执行SQL语句
            int rowsAffected = statement.executeUpdate();
            System.out.println("Rows affected: " + rowsAffected);

            // 关闭连接和语句对象
            statement.close();
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}