基于jsp的邮件收发系统

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 javax.mail.Authenticator() {
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication("username", "password");
    }
});

try {
    Message message = new MimeMessage(session);
    message.setFrom(new InternetAddress("from@example.com"));
    message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("to@example.com"));
    message.setSubject("Test Email");
    message.setText("This is a test email.");

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

Properties props = new Properties();
props.put("mail.pop3.host", "pop.example.com");
props.put("mail.pop3.port", "995");
props.put("mail.pop3.starttls.enable", "true");

Session session = Session.getDefaultInstance(props);

try {
    Store store = session.getStore("pop3s");
    store.connect("pop.example.com", "username", "password");

    Folder inbox = store.getFolder("INBOX");
    inbox.open(Folder.READ_ONLY);

    Message[] messages = inbox.search(new FlagTerm(new Flags(Flags.Flag.RECENT), true));
    for (Message message : messages) {
        System.out.println("Subject: " + message.getSubject());
    }

    inbox.close(false);
    store.close();
} catch (Exception e) {
    e.printStackTrace();
}