java发送邮件

package com.east.email;

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

import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

/**
*author:East(张栋芳)
*date:2008-7-17
*
**/
public class SendMail {
private static MailAuthenticator autherticator=null;
public static void main(String[] args) {
for (int i=0;i<5;i++){

String from="zdf_zdf520@163.com";
String to="271536394@qq.com";
String smtpServer="smtp.163.com";
String subject="Hello ,this is a email Test!!";
String content ="Welcome to you!!";
Properties props = System.getProperties();

props.put("mail.smtp.host", smtpServer);
props.put("mail.smtp.auth","true");
autherticator = new MailAuthenticator("zdf_zdf520@163.com","XXXXXXXX");
Session session = Session.getDefaultInstance(props,autherticator);
MimeMessage msg = new MimeMessage(session);
try{
msg.setFrom(new InternetAddress(from));
msg.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(to));
msg.setSubject(subject);
msg.setSentDate(new Date());
msg.setText(content);
Transport.send(msg);
System.out.println("成功发送邮件......");
}catch(Exception se){
se.printStackTrace();
}
}
}
}
//现在的大部分的邮件服务器都要求有身份验证，所以需要此类实现验证功能
class MailAuthenticator extends Authenticator{

private String username = null;
private String userpasswd = null;

public MailAuthenticator(){}
public MailAuthenticator(String username,String userpasswd){
this.username = username;
this.userpasswd = userpasswd;
}

public void setUserName(String username){
this.username = username;
}

public void setPassword(String password){
this.userpasswd = password;
}

public PasswordAuthentication getPasswordAuthentication(){
return new PasswordAuthentication(username,userpasswd);
}
}