使用JavaMail发送SMTP认证的邮件给多个收信人

/*
* SMTPAuth.java
*
* Created on 2005年11月17日, 下午11:30
*/

package com.jointforce;

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

/**
*
* @author  eric.cookie
*/
public class SMTPAuth {
    
    /** Creates a new instance of SMTPAuth */
    public SMTPAuth() {
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        String to1 = "xxxx@xxxx.com";
        String to2 = "xxxx@xxxx.com";
        String to3 = "xxxx@xxxx.com";
        String to4 = "xxxx@xxxx.com";
        String to5 = "xxxx@xxxx.com";
        String to6 = "xxxx@xxxx.com";
        
        String from = "zzzz@zzzz.com";
        String subject = "Test JavaMail";
        
        Properties props = System.getProperties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.host", "smtp.jointforce.com.cn");
        
        SmtpAuthenticator sa = new SmtpAuthenticator();
        Session sess = Session.getInstance(props, sa);
        sess.setDebug(true);
        
        try {
            Message msg = new MimeMessage(sess);
            msg.setFrom(new InternetAddress(from));
            msg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(to1, false));
            msg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(to2, false));
            msg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(to3, false));
            msg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(to4, false));
            msg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(to5, false));
            msg.addRecipients(Message.RecipientType.TO, InternetAddress.parse(to6, false));
            msg.setSubject(subject);
            msg.setSentDate(new Date());
            msg.setText("Hello World!\nSecond Line text\nend");
            Transport.send(msg);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
}

class SmtpAuthenticator extends Authenticator {
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication("username_to_login_mailbox", "password_to_login_mailbox");
    }
}