如何通过java中的方法在db中插入数据后立即在后台发送邮件

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class DataInsertionWithEmail {

    private static final String DB_URL = "jdbc:mysql://localhost:3306/mydatabase";
    private static final String USER = "username";
    private static final String PASS = "password";

    public static void main(String[] args) {
        insertDataAndSendEmail("John Doe", "john@example.com");
    }

    public static void insertDataAndSendEmail(String name, String email) {
        // 插入数据到数据库
        insertData(name, email);

        // 异步发送邮件
        ExecutorService executor = Executors.newSingleThreadExecutor();
        executor.submit(() -> sendEmail(email, "Welcome to our system", "Hello " + name + ", welcome to our system!"));
        executor.shutdown();
    }

    private static void insertData(String name, String email) {
        String sql = "INSERT INTO users (name, email) VALUES (?, ?)";
        try (Connection conn = DriverManager.getConnection(DB_URL, USER, PASS);
             PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setString(1, name);
            pstmt.setString(2, email);
            pstmt.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    private static void sendEmail(String to, String subject, String body) {
        Properties props = new Properties();
        props.put("mail.smtp.host", "smtp.example.com");
        props.put("mail.smtp.port", "587");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");

        Session session = Session.getInstance(props, new Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("your-email@example.com", "your-password");
            }
        });

        try {
            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress("your-email@example.com"));
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
            message.setSubject(subject);
            message.setText(body);

            Transport.send(message);
            System.out.println("Email sent successfully to " + to);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
}