JavaWeb -- 邮件收发

smtp协议：

telnet smtp.qq.com 25

ehlo kevin
auth login
eGlhbmdqaWU1NUBxcS5jb20=
a2V2aW5feGlhbmc1NQ==

mail from:<[e-mail]>
rcpt to:<[e-mail]>

data

from:<[e-mail]>
to:<[e-mail]>
subject:test

xxxxxxxxxxxxxxxxxxxxxxxxxxx
.

quit

邮件生成：

public class ImageMail {

	/**
	 * 带图片的邮件
	 */
	public static void main(String[] args) throws Exception {

		Session session = Session.getInstance(new Properties());
		MimeMessage message = new MimeMessage(session);

		//设置邮件的基本信息
		message.setFrom(new InternetAddress("[e-mail]"));
		message.setRecipient(Message.RecipientType.TO, new InternetAddress("[e-mail]"));
		message.setSubject("test");

		//准备邮件数据
		//准备邮件正文数据
		MimeBodyPart text = new MimeBodyPart();
		text.setContent("xxxx<img src='cid:xxx.jpg'>xxxxxxxxx", "text/html");

		//准备图片数据
		MimeBodyPart image = new MimeBodyPart();
		DataHandler dh = new DataHandler(new FileDataSource("src\\1.jpg"));
		image.setDataHandler(dh);
		image.setContentID("xxx.jpg");

		//描述数据关系
		MimeMultipart mm = new MimeMultipart();
		mm.addBodyPart(text);
		mm.addBodyPart(image);
		mm.setSubType("related");

		message.setContent(mm);
		message.saveChanges();

		message.writeTo(new FileOutputStream("c:\\1.eml"));
	}
}

// 文字 附件 图片 混合右键
public class MixedMail {

	/**
	 * 最复杂的邮件
	 * @throws MessagingException
	 * @throws AddressException
	 */
	public static void main(String[] args) throws Exception {

		Session session = Session.getInstance(new Properties());
		MimeMessage message = new MimeMessage(session);

		//设置邮件的基本信息
		message.setFrom(new InternetAddress("[e-mail]"));
		message.setRecipient(Message.RecipientType.TO, new InternetAddress("[e-mail]"));
		message.setSubject("测试");

		//正文
		MimeBodyPart text = new MimeBodyPart();
		text.setContent("xxx这是女的xxxx<br/><img src='cid:aaa.jpg'>","text/html;charset=UTF-8");

		//图片
		MimeBodyPart image = new MimeBodyPart();
		image.setDataHandler(new DataHandler(new FileDataSource("src\\3.jpg")));
		image.setContentID("aaa.jpg");

		//附件1
		MimeBodyPart attach = new MimeBodyPart();
		DataHandler dh = new DataHandler(new FileDataSource("src\\4.zip"));
		attach.setDataHandler(dh);
		attach.setFileName(dh.getName());

		//附件2
		MimeBodyPart attach2 = new MimeBodyPart();
		DataHandler dh2 = new DataHandler(new FileDataSource("src\\波子.zip"));
		attach2.setDataHandler(dh2);
		attach2.setFileName(MimeUtility.encodeText(dh2.getName()));

		//描述关系:正文和图片
		MimeMultipart mp1 = new MimeMultipart();
		mp1.addBodyPart(text);
		mp1.addBodyPart(image);
		mp1.setSubType("related");

		//描述关系:正文和附件
		MimeMultipart mp2 = new MimeMultipart();
		mp2.addBodyPart(attach);
		mp2.addBodyPart(attach2);

		MimeBodyPart content = new MimeBodyPart();  //代表正文的bodypart
		content.setContent(mp1);
		mp2.addBodyPart(content);
		mp2.setSubType("mixed");

		message.setContent(mp2);
		message.saveChanges();

		message.writeTo(new FileOutputStream("c:\\3.eml"));

	}
}

邮件发送：

public class Sendmail {

	/**
	 * @param args
	 * @throws Exception
	 */
	public static void main(String[] args) throws Exception {

		Properties prop = new Properties();
		prop.setProperty("mail.host", "smtp.163.com");
		prop.setProperty("mail.transport.protocol", "smtp");
		prop.setProperty("mail.smtp.auth", "true");

		//创建session
		Session session = Session.getInstance(prop);
		session.setDebug(true);

		//通过session得到transport对象
		Transport ts = session.getTransport();

		//连上邮件服务器
		ts.connect("smtp.163.com", "xiangjie012455", "012455");

		//发送邮件
		Message message = makeMessage(session);
		ts.sendMessage(message, message.getAllRecipients());
		ts.close();
	}

	public static Message makeMessage(Session session) throws Exception, MessagingException{

		MimeMessage message = new MimeMessage(session);
		message.setFrom(new InternetAddress("[e-mail]"));
		message.setRecipient(Message.RecipientType.TO, new InternetAddress("[e-mail]"));
		message.setSubject("test");
		message.setContent("aaa", "text/html");

		return message;
	}

}