JAVA:获取数据库项ID

import java.sql.*;

public class GetDatabaseItemId {
    public static void main(String[] args) {
        // 数据库连接信息
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "password";

        // SQL查询语句
        String sql = "SELECT id FROM mytable WHERE name = 'example'";

        try {
            // 加载数据库驱动
            Class.forName("com.mysql.jdbc.Driver");

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

            // 创建Statement对象
            Statement statement = connection.createStatement();

            // 执行查询
            ResultSet resultSet = statement.executeQuery(sql);

            // 处理查询结果
            if (resultSet.next()) {
                int itemId = resultSet.getInt("id");
                System.out.println("Database item ID: " + itemId);
            } else {
                System.out.println("Item not found!");
            }

            // 关闭连接
            resultSet.close();
            statement.close();
            connection.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}