eclipse测试连接mysql数据库

import java.sql.*;

public class MySQLTest {
    public static void main(String[] args) {
        Connection connection = null;
        try {
            // 加载MySQL JDBC驱动程序
            Class.forName("com.mysql.jdbc.Driver");
            
            // 建立数据库连接
            String url = "jdbc:mysql://localhost:3306/mydatabase";
            String username = "root";
            String password = "password";
            connection = DriverManager.getConnection(url, username, password);
            
            // 执行数据库操作
            Statement statement = connection.createStatement();
            ResultSet resultSet = statement.executeQuery("SELECT * FROM mytable");
            while (resultSet.next()) {
                System.out.println(resultSet.getString(1));
            }
            
            // 关闭数据库连接
            resultSet.close();
            statement.close();
            connection.close();
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        }
    }
}