轻松学会使用JavaMail API发送邮件

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

public class EmailSender {

    public static void main(String[] args) {
        // 发件人邮箱地址
        String fromEmail = "your_email@example.com";
        // 发件人邮箱密码（或授权码）
        String password = "your_email_password";
        // 收件人邮箱地址
        String toEmail = "recipient_email@example.com";
        // SMTP 服务器地址
        String smtpHost = "smtp.example.com";

        // 创建邮件会话
        Properties props = new Properties();
        props.setProperty("mail.smtp.host", smtpHost);
        Session session = Session.getDefaultInstance(props);

        try {
            // 创建邮件
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(fromEmail));
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(toEmail));
            message.setSubject("订单确认");

            // 添加邮件内容
            String content = "亲爱的用户，您的订单已确认。";
            String trackingPixel = "<img src=\"
            message.setText(content + trackingPixel);

            // 发送邮件
            Transport transport = session.getTransport("smtp");
            transport.connect(smtpHost, fromEmail, password);
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();

            System.out.println("邮件发送成功！");
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
}