eclipse中与mysql数据库连接

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

public class DatabaseConnector {
    public static void main(String[] args) {
        Connection connection = null;
        try {
            // 加载驱动程序
            Class.forName("com.mysql.jdbc.Driver");
            // 创建数据库连接
            String url = "jdbc:mysql://localhost:3306/db_name";
            String username = "username";
            String password = "password";
            connection = DriverManager.getConnection(url, username, password);
            System.out.println("连接成功！");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭数据库连接
            if (connection != null) {
                try {
                    connection.close();
                    System.out.println("连接已关闭！");
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}