android直连数据库

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

public class DatabaseConnector {
    private static final String URL = "jdbc:mysql://your_database_host:3306/your_database_name";
    private static final String USER = "your_username";
    private static final String PASSWORD = "your_password";

    public static void main(String[] args) {
        Connection connection = null;
        PreparedStatement preparedStatement = null;
        ResultSet resultSet = null;

        try {
            // 加载 JDBC 驱动
            Class.forName("com.mysql.cj.jdbc.Driver");

            // 建立连接
            connection = DriverManager.getConnection(URL, USER, PASSWORD);

            // 执行查询
            String sql = "SELECT * FROM your_table WHERE id = ?";
            preparedStatement = connection.prepareStatement(sql);
            preparedStatement.setInt(1, 1); // 假设查询 id 为 1 的记录
            resultSet = preparedStatement.executeQuery();

            // 处理结果集
            while (resultSet.next()) {
                int id = resultSet.getInt("id");
                String name = resultSet.getString("name");
                System.out.println("ID: " + id + ", Name: " + name);
            }
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            try {
                if (resultSet != null) resultSet.close();
                if (preparedStatement != null) preparedStatement.close();
                if (connection != null) connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}