import java.io.*;import java.net.InetAddress;import java.util.Properties;import java.util.Date;import javax.mail.*;import javax.mail.internet.*;import javax.activation.*;/** * 帶附件的 email 發送程序 * * <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;      //發件人      String from = null;      //主題      String subject = null;      //抄送人      String cc = null;      //暗抄送      String bcc = null;      // mail 主機      String mailhost = null;      // mail 內容      String content = null;      //MIME郵件對象      MimeMessage mimeMsg = null;      //郵件會話對象      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  = "帶附件的";        Properties props = System.getProperties();  //獲得系統屬性        props.put("mail.smtp.host", mailhost);      //設置SMTP主機        //獲得郵件會話對象        session = Session.getDefaultInstance(props,null);        //創建MIME郵件對象        mimeMsg = new MimeMessage( session );        //設置發信人        mimeMsg.setFrom(new InternetAddress( from ) );        //設置收信人        if(to!=null){           mimeMsg.setRecipients( Message.RecipientType.TO, InternetAddress.parse( to ) );        }        //設置抄送人        if(cc!=null){           mimeMsg.setRecipients( Message.RecipientType.CC, InternetAddress.parse( cc ) );        }        //設置暗送人        if(bcc!=null){           mimeMsg.setRecipients( Message.RecipientType.BCC, InternetAddress.parse( bcc ) );        }        //設置郵件主題        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個文件        FileDataSource fds = new FileDataSource( fileAttachment );        mbp2.setDataHandler(new DataHandler(fds));        mbp2.setFileName(fds.getName());        // 創建 Multipart 并放入每個 MimeBodyPart        Multipart mp = new MimeMultipart();        mp.addBodyPart( mbp1 );        mp.addBodyPart( mbp2 );        // 增加 Multipart 到信息體	mimeMsg.setContent( mp );        //發送日期        mimeMsg.setSentDate(new Date());        //發送郵件        Transport.send( mimeMsg );        System.out.println( "email send！");      } catch (MessagingException e) {        e.printStackTrace();      } catch (Exception e) {        e.printStackTrace();      }    }}