email3.java

用java编写的mail程序

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.*;

/**
 * 带身份验证的 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 Email3 {

    public static void main(String[] argv) {
        new Email3(argv);
    }

    public Email3(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;
      //************  不同之处    *************/
      String user	 = null;
      String password    = null;
      try {
        mailhost = "wangshuai";
        from	 = "from@wangshuai";
        to	 = "to@wangshuai";
        subject	 = "您好";
        content  = "带身份验证的";
        user     = "administrator";
        password = "";

        Properties props = System.getProperties();  //获得系统属性
        props.put("mail.smtp.host", mailhost);      //设置SMTP主机
        props.put("mail.smtp.auth","true");         //设置身份验证为真，若须身份验证则必须设为真

        //获得邮件会话对象
		//session = Session.getDefaultInstance(props,null);
		//注意下面这行的 Session.getDefaultInstance 方法的第二个参数
        session = Session.getDefaultInstance(props, new Email_Autherticatorbean( user, password ) );

        //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");

        //设置邮件内容
        mimeMsg.setText( content ,"GBK" );
        //发送日期
        mimeMsg.setSentDate(new Date());
        //发送邮件
        Transport.send( mimeMsg );
        System.out.println( "email send！");

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