idea中的项目连接mysql数据库

import java.sql.*;

public class MySQLExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "your_password";
        
        try {
            Connection connection = DriverManager.getConnection(url, username, password);
            Statement statement = connection.createStatement();
            ResultSet resultSet = statement.executeQuery("SELECT * FROM mytable");
            
            while (resultSet.next()) {
                // 处理结果集
                String column1 = resultSet.getString("column1");
                int column2 = resultSet.getInt("column2");
                
                System.out.println(column1 + " - " + column2);
            }
            
            resultSet.close();
            statement.close();
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}