package com.edu.dk.portal.app.zp.util;

import java.util.Date;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
 * @describe:邮件服务类
 * 
 * @date 2013-9-11
 * @author yuanlin.su
 */
public final class MailService extends Authenticator {
	public MailService() {
	}

	private static MailService mailService = null;

	public synchronized static MailService getInstance() {
		if (mailService == null) {
			mailService = new MailService();
		}
		return mailService;
	}

	private Session getMailSession() {
		Properties props = new Properties();
		props.setProperty("mail.smtp.auth", SystemProperties.getProperty("mail.send.smtp.auth"));
		props.setProperty("mail.transport.protocol", SystemProperties.getProperty("mail.send.transport.protocol"));
		props.setProperty("mail.store.protocol", SystemProperties.getProperty("mail.send.store.protocol"));
		props.put("mail.smtp.host", SystemProperties.getProperty("mail.send.smtp.host"));
		Session session = Session.getInstance(props, this);
		return session;
	}

	@Override
	protected PasswordAuthentication getPasswordAuthentication() {
		return new PasswordAuthentication(SystemProperties.getProperty("mail.send.username"), SystemProperties.getProperty("mail.send.password"));
	}

	/**
	 * 发送邮件
	 * 
	 * @param subject
	 *            主题
	 * @param message
	 *            消息内容
	 */
	public void sendMail(String subject, String message, Address[] address) {
		// 根据session创建一个邮件消息
		Message mailMessage = new MimeMessage(getMailSession());

		try {
			// 创建邮件发送者地址
			Address from = new InternetAddress(SystemProperties.getProperty("mail.send.address"));
			// 设置邮件消息的发送者
			mailMessage.setFrom(from);
			// 创建邮件的接收者地址，并设置到邮件消息中
			mailMessage.setRecipients(Message.RecipientType.TO, address);
			// 设置邮件消息的主题
			mailMessage.setSubject(subject);
			// 设置邮件消息发送的时间
			mailMessage.setSentDate(new Date());

			MimeBodyPart mbp1 = new MimeBodyPart();
			mbp1.setContent(message, "text/html;charset=utf-8");

			Multipart mp = new MimeMultipart();
			mp.addBodyPart(mbp1);

			mailMessage.setContent(mp);
			// 发送邮件
			Transport.send(mailMessage);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}