javaMail群发

//设置主收件人

msg.setRecipients(Message.RecipientType.TO,Address toaddress); 

//设置抄送收件人

msg.addRecipients(Message.RecipientType.CC,Address coaddress); 

//设置暗抄送人

msg.addRecipients(Message.RecipientType.BCC,Address bcoaddress); 

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

/**
 * @author Bromon
 */
public class Msgmultisend {
    private String host = "";
    private String user = "";
    private String password = "";
    
    public void setHost(String host) {
        this.host = host;
    }

    public void setAccount(String user, String password) {
        this.user = user;
        this.password = password;
    }

    public void send(String from, String to, String subject, String content) {
        Properties props = new Properties();
        props.put("mail.smtp.host", host); //指定SMTP服务器
        props.put("mail.smtp.auth", "true"); //指定是否需要SMTP验证
        try {
            
            Session mailSession = Session.getInstance(props, null);
            mailSession.setDebug(true); //是否在控制台显示debug信息
            
        MimeMessage message = new MimeMessage(mailSession);
            message.setFrom(new InternetAddress(from)); //发件人
            
        message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));  //这个里面的和单独的发送给某人是不同的

//message.setRecipient(Message.RecipientType.TO, new InternetAddress(address));	                       
            message.setSubject(subject); //邮件主题
        message.setText(content); //邮件内容
        message.saveChanges();
            
            Transport transport = mailSession.getTransport("smtp");
            transport.connect(host, user, password);
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();
        } catch (Exception e) {
            System.out.println(e);
        }

    }

    public static void main(String args[]) {
        Msgmultisend sm = new Msgmultisend();

        sm.setHost("smtp.163.com"); //指定要使用的邮件服务器
        sm.setAccount("txy_821", "**********"); //指定帐号和密码
        /*
         * @param String 发件人的地址
         * @param String 收件人地址
         * @param String 邮件标题
         * @param String 邮件正文
         */
        sm.send("[e-mail]", "[e-mail],[e-mail],[e-mail]",
                "mose测试ing", "无语!");
    }

}