[JAVA100例]047、使用JavaMail发送邮件

 原文:http://www.jspcn.net/htmlnews/11454144150781711.html

import java.util.*;
import java.io.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;


/**
 * <p>Title: 使用javamail发送邮件</p>
 * <p>Description: 演示如何使用javamail包发送电子邮件。这个实例可发送多附件</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Filename: Mail.java</p>
 * @version 1.0
 */
public class Mail {


String to = "";//收件人
String from = "";//发件人
String host = "";//smtp主机
String username = "" ;
String password = "" ;
String filename = "";//附件文件名
String subject = "";//邮件主题
String content = "";//邮件正文
Vector file = new Vector();//附件文件集合
/**
 *<br>方法说明:默认构造器
 *<br>输入参数:
 *<br>返回类型:
 */
public Mail(){
}
/**
 *<br>方法说明:构造器,提供直接的参数传入
 *<br>输入参数:
 *<br>返回类型:
 */
public Mail(String to,String from,String smtpServer,String username,String password,String subject,String content){
  this.to = to;
  this.from = from;
  this.host = smtpServer;
  this.username = username;
  this.password = password;
  this.subject = subject;
  this.content = content;
}
/**
 *<br>方法说明:设置邮件服务器地址
 *<br>输入参数:String host 邮件服务器地址名称
 *<br>返回类型:
 */
public void setHost(String host){
  this.host = host;
}
/**
 *<br>方法说明:设置登录服务器校验密码
 *<br>输入参数:
 *<br>返回类型:
 */
public void setPassWord(String pwd){
  this.password = pwd;
}
/**
 *<br>方法说明:设置登录服务器校验用户
 *<br>输入参数:
 *<br>返回类型:
 */
public void setUserName(String usn){
  this.username = usn;
}
/**
 *<br>方法说明:设置邮件发送目的邮箱
 *<br>输入参数:
 *<br>返回类型:
 */
public void setTo(String to){
  this.to = to;
}
/**
 *<br>方法说明:设置邮件发送源邮箱
 *<br>输入参数:
 *<br>返回类型:
 */
public void setFrom(String from){
  this.from = from;
}
/**
 *<br>方法说明:设置邮件主题
 *<br>输入参数:
 *<br>返回类型:
 */
public void setSubject(String subject){
  this.subject = subject;
}
/**
 *<br>方法说明:设置邮件内容
 *<br>输入参数:
 *<br>返回类型:
 */
public void setContent(String content){
  this.content = content;
}
/**
 *<br>方法说明:把主题转换为中文
 *<br>输入参数:String strText
 *<br>返回类型:
 */
public String transferChinese(String strText){
  try{
    strText = MimeUtility.encodeText(new String(strText.getBytes(), "GB2312"), "GB2312", "B");
  }catch(Exception e){
    e.printStackTrace();
  }
  return strText;
}
/**
 *<br>方法说明:往附件组合中添加附件
 *<br>输入参数:
 *<br>返回类型:
 */
public void attachfile(String fname){
  file.addElement(fname);
}
/**
 *<br>方法说明:发送邮件
 *<br>输入参数:
 *<br>返回类型:boolean 成功为true,反之为false
 */
public boolean sendMail(){


  //构造mail session
  Properties props = System.getProperties();
  props.put("mail.smtp.host",host);
  props.put("mail.smtp.auth","true");
  Session session=Session.getDefaultInstance(props, new Authenticator(){
   public PasswordAuthentication getPasswordAuthentication(){
    return new PasswordAuthentication(username,password);
   }
  });
 
  try {
    //构造MimeMessage 并设定基本的值
    MimeMessage msg = new MimeMessage(session);
    msg.setFrom(new InternetAddress(from));
    InternetAddress[] address={new InternetAddress(to)};
    msg.setRecipients(Message.RecipientType.TO,address);
    subject = transferChinese(subject);
    msg.setSubject(subject);
   
    //构造Multipart
    Multipart mp = new MimeMultipart();
   
    //向Multipart添加正文
    MimeBodyPart mbpContent = new MimeBodyPart();
    mbpContent.setText(content);
    //向MimeMessage添加(Multipart代表正文)
    mp.addBodyPart(mbpContent);
   
    //向Multipart添加附件
    Enumeration efile=file.elements();
    while(efile.hasMoreElements()){
   
      MimeBodyPart mbpFile = new MimeBodyPart();
      filename=efile.nextElement().toString();
      FileDataSource fds = new FileDataSource(filename);
      mbpFile.setDataHandler(new DataHandler(fds));
      mbpFile.setFileName(fds.getName());
      //向MimeMessage添加(Multipart代表附件)
      mp.addBodyPart(mbpFile);


    }
   
    file.removeAllElements();
    //向Multipart添加MimeMessage
    msg.setContent(mp);
    msg.setSentDate(new Date());
    //发送邮件
    Transport.send(msg);
 
  } catch (MessagingException mex) {
    mex.printStackTrace();
    Exception ex = null;
    if ((ex=mex.getNextException())!=null){
      ex.printStackTrace();
    }
    return false;
  }
  return true;
 }
/**
 *<br>方法说明:主方法,用于测试
 *<br>输入参数:
 *<br>返回类型:
 */
 public static void main(String[] args){
  Mail sendmail = new Mail();
  sendmail.setHost("smtp.sohu.com");
  sendmail.setUserName("du_jiang");
  sendmail.setPassWord("31415926");
  sendmail.setTo("[email protected]");
  sendmail.setFrom("[email protected]");
  sendmail.setSubject("你好,这是测试!");
  sendmail.setContent("你好这是一个带多附件的测试!"); 
  //Mail sendmail = new Mail("[email protected]","[email protected]","smtp.sohu.com","du_jiang","31415926","你好","胃,你好吗?");
  sendmail.attachfile("c:/test.txt");
  sendmail.attachfile("DND.jar");
  sendmail.sendMail();


 }
}//end

 

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