email2.java

基于java开发的邮件系统

package com.tapando.mail;

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

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
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;

/**
 * 带附件的 email 发送程序
 * 
 * <p>
 * Title:
 * </p>
 * <p>
 * Description:
 * </p>
 * <p>
 * Copyright: Copyright (c) 2001
 * </p>
 * <p>
 * Company:
 * </p>
 * 
 * @author unascribed
 * @version 1.0
 */
public class Email2 {

	public static void main(String[] argv) {
		new Email2(argv);
	}

	public Email2(String[] argv) {
		// 收件人
		String to = null;
		// 发件人
		String from = null;
		// 主题
		String subject = null;
		// 抄送人
		String cc = null;
		// 暗抄送
		String bcc = null;
		// mail 主机
		String mailhost = null;
		// mail 内容
		String content = null;
		// MIME邮件对象
		MimeMessage mimeMsg = null;
		// 邮件会话对象
		Session session = null;
		// 附件的文件名
		String fileAttachment = "C:\\WINNT\\Greenstone.bmp";

		try {
			mailhost = "wangshuai";
			from = "from@wangshuai";
			to = "to@wangshuai";
			subject = "您好";
			content = "带附件的";

			Properties props = System.getProperties(); // 获得系统属性
			props.put("mail.smtp.host", mailhost); // 设置SMTP主机

			// 获得邮件会话对象
			session = Session.getDefaultInstance(props, null);
			// 创建MIME邮件对象
			mimeMsg = new MimeMessage(session);
			// 设置发信人
			mimeMsg.setFrom(new InternetAddress(from));

			// 设置收信人
			if (to != null) {
				mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress
						.parse(to));
			}

			// 设置抄送人
			if (cc != null) {
				mimeMsg.setRecipients(Message.RecipientType.CC, InternetAddress
						.parse(cc));
			}

			// 设置暗送人
			if (bcc != null) {
				mimeMsg.setRecipients(Message.RecipientType.BCC,
						InternetAddress.parse(bcc));
			}

			// 设置邮件主题
			mimeMsg.setSubject(subject, "GBK");
			// 第一部分信息
			MimeBodyPart mbp1 = new MimeBodyPart();
			mbp1.setText(content, "GBK");

			// 第二部分信息
			MimeBodyPart mbp2 = new MimeBodyPart();

			// 在第二部分信息中附加一个文件
			FileDataSource fds = new FileDataSource(fileAttachment);
			mbp2.setDataHandler(new DataHandler(fds));
			mbp2.setFileName(fds.getName());

			// 创建 Multipart 并放入每个 MimeBodyPart
			Multipart mp = new MimeMultipart();
			mp.addBodyPart(mbp1);
			mp.addBodyPart(mbp2);

			// 增加 Multipart 到信息体
			mimeMsg.setContent(mp);

			// 发送日期
			mimeMsg.setSentDate(new Date());
			// 发送邮件
			Transport.send(mimeMsg);
			System.out.println("email     send！");

		} catch (MessagingException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}