java mail(简略发送邮件)

package com.util.mail;

import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendMailSSL {
	public static void main(String[] args) {
		Properties props = new Properties();
		props.put("mail.smtp.host", "smtp.gmail.com");
		props.put("mail.smtp.socketFactory.port", "465");
		props.put("mail.smtp.socketFactory.class",
				"javax.net.ssl.SSLSocketFactory");
		props.put("mail.smtp.auth", "true");
		props.put("mail.smtp.port", "465");

		Session session = Session.getDefaultInstance(props,
				new javax.mail.Authenticator() {
					protected PasswordAuthentication getPasswordAuthentication() {
						return new PasswordAuthentication("xxx@gmail.com",
								"***");
					}
				});

		try {

			Message message = new MimeMessage(session);
			message.setFrom(new InternetAddress("xxx@gmail.com"));
			message.setRecipients(Message.RecipientType.TO, InternetAddress
					.parse("xxx@qq.com"));
			message.setSubject("Testing Subject");
			message.setText("Dear Mail Crawler,"
					+ "\n\n No spam to my email, please!");

			Transport.send(message);

			System.out.println("Done");

		} catch (MessagingException e) {
			throw new RuntimeException(e);
		}
	}
}

package com.util.mail;

import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendMailTLS {

	public static void main(String[] args) {
		String host = "smtp.gmail.com";
		int port = 587;
		String username = "xxx@gmail.com";
		String password = "***";

		Properties props = new Properties();
		props.put("mail.smtp.auth", "true");
		props.put("mail.smtp.starttls.enable", "true");

		Session session = Session.getInstance(props);

		try {

			Message message = new MimeMessage(session);
			message.setFrom(new InternetAddress("xxx@gmail.com"));
			message.setRecipients(Message.RecipientType.TO, InternetAddress
					.parse("xxx@qq.com"));
			message.setSubject("Testing Subject");
			message.setText("Dear Mail Crawler,"
					+ "\n\n No spam to my email, please!");

			Transport transport = session.getTransport("smtp");
			transport.connect(host, port, username, password);

			Transport.send(message);

			System.out.println("Done");

		} catch (MessagingException e) {
			throw new RuntimeException(e);
		}
	}
}