使用mysql数据库连接

import java.sql.*;

public class MySQLConnection {
    public static void main(String[] args) {
        // 数据库连接参数
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "123456";

        // 加载数据库驱动程序
        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }

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

            // 执行SQL查询
            ResultSet rs = stmt.executeQuery("SELECT * FROM users");

            // 处理查询结果
            while (rs.next()) {
                int id = rs.getInt("id");
                String name = rs.getString("name");
                System.out.println("id: " + id + ", name: " + name);
            }

            // 关闭数据库连接
            rs.close();
            stmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}