jdbc连接云服务器数据库

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

public class JdbcExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://your-cloud-server-ip:3306/your-database-name";
        String username = "your-username";
        String password = "your-password";

        try {
            // 加载MySQL驱动程序
            Class.forName("com.mysql.cj.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SQL查询
            String sql = "SELECT * FROM your_table_name";
            ResultSet resultSet = statement.executeQuery(sql);

            // 处理结果集
            while (resultSet.next()) {
                System.out.println(resultSet.getString("your_column_name"));
            }

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