通过Java实现的消息通知功能

import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;

public class EmailSender {
    public static void sendEmail(String to, String subject, String content) throws MessagingException {
        // 配置邮件服务器
        Properties properties = new Properties();
        properties.put("mail.smtp.host", "smtp.example.com");
        properties.put("mail.smtp.port", "587");
        properties.put("mail.smtp.auth", "true");

        // 创建会话对象
        Session session = Session.getInstance(properties, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("your_email@example.com", "your_password");
            }
        });

        // 创建邮件对象
        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress("your_email@example.com"));
        message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
        message.setSubject(subject);
        message.setText(content);

        // 发送邮件
        Transport.send(message);
    }

    public static void main(String[] args) {
        try {
            sendEmail("recipient@example.com", "Important Notification", "您有一条重要的通知，请查收。");
            System.out.println("邮件发送成功。");
        } catch (MessagingException e) {
            System.out.println("邮件发送失败：" + e.getMessage());
        }
    }
}