Java郵件發送程序（可以同時發給多個地址、可以帶附件）

import org.apache.commons.lang.StringUtils;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.Multipart;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
import java.util.Date;
import java.util.Properties;

/**
 * 利用java.mail的郵件發送程序
 * eg:http://www.jb51.net/article/15323.htm
 */
public class SendMailTest{
    public static void sendmail(String subject, String from, String[] to, String text, String[] filenames,String mimeType) throws Exception
    {
        //ResourceBundle mailProps = ResourceBundle.getBundle("mail");   可以從配置文件讀取相應的參數
        Properties props = new Properties();

        String smtp = "smtp.163.com";  //設置發送郵件所用到的smtp (smtp.qq.com|smtp.163.com)
        String servername = "sir_znp";
        String serverpaswd = "123";

        javax.mail.Session mailSession; //郵件會話對象
        javax.mail.internet.MimeMessage mimeMsg; //MIME郵件對象

        props = java.lang.System.getProperties(); //獲得系統屬性對象
        props.put("mail.smtp.host", smtp); //設置SMTP主機
        props.put("mail.smtp.auth", "true"); //是否到服務器用戶名和密碼驗證
        //到服務器驗證發送的用戶名和密碼是否正確
        Email_Autherticatorbean myEmailAuther = new Email_Autherticatorbean(servername, serverpaswd);
        //設置郵件會話
        mailSession = javax.mail.Session.getInstance(props, (Authenticator) myEmailAuther);
        //設置傳輸協議
        javax.mail.Transport transport = mailSession.getTransport("smtp");
        //設置from、to等信息
        mimeMsg = new javax.mail.internet.MimeMessage(mailSession);
        if (!StringUtils.isEmpty(from))
        {
            InternetAddress sentFrom = new InternetAddress(from);
            mimeMsg.setFrom(sentFrom);  //設置發送人地址
        }

        InternetAddress[] sendTo = new InternetAddress[to.length];
        for (int i = 0; i < to.length; i++)
        {
            System.out.println("發送到:" + to[i]);
            sendTo[i] = new InternetAddress(to[i]);
        }

        mimeMsg.setRecipients(javax.mail.internet.MimeMessage.RecipientType.TO, sendTo);
        mimeMsg.setSubject(subject, "gb2312");

        MimeBodyPart messageBodyPart1 = new MimeBodyPart();
        //messageBodyPart.setText(UnicodeToChinese(text));
        messageBodyPart1.setContent(text, mimeType);

        Multipart multipart = new MimeMultipart();//附件傳輸格式
        multipart.addBodyPart(messageBodyPart1);

        for (int i = 0; i < filenames.length; i++) {
            MimeBodyPart messageBodyPart2 = new MimeBodyPart();
            //選擇出每一個附件名
            String filename = filenames[i].split(",")[0];
            System.out.println("附件名：" + filename);
            String displayname = filenames[i].split(",")[1];
            //得到數據源
            FileDataSource fds = new FileDataSource(filename);
            //得到附件本身並至入BodyPart
            messageBodyPart2.setDataHandler(new DataHandler(fds));
            //得到文件名同樣至入BodyPart
            //messageBodyPart2.setFileName(displayname);
            // messageBodyPart2.setFileName(fds.getName());
            messageBodyPart2.setFileName(MimeUtility.encodeText(displayname));
            multipart.addBodyPart(messageBodyPart2);
        }
        mimeMsg.setContent(multipart);
        //設置信件頭的發送日期
        mimeMsg.setSentDate(new Date());
        mimeMsg.saveChanges();
        //發送郵件
        transport.send(mimeMsg);
        transport.close();
    }

    public static void main(String[] args)
    {
        String title = "titleTest";//所發送郵件的標題
        String from ="[email protected]";//從那裏發送
        String sendTo[] = {"[email protected]","[email protected]"};//發送到那裏
        //郵件的文本內容，可以包含html標記則顯示爲html頁面
        String content = "mail test!!!!!!<br><a href=#>aaa</a>";
        //所包含的附件，及附件的重新命名
        String fileNames[] = {"D:\\text1.txt,text1.txt","D:\\text2.txt,text2.txt"};
        try {
            //MailSender mailsender = new MailSender();
            sendmail(title, from, sendTo, content, fileNames,"text/html;charset=gb2312");
        } catch (Exception ex) { ex.printStackTrace(); }
    }
}

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

public class Email_Autherticatorbean  extends Authenticator
{
    private String m_username = null;
    private String m_userpass = null;

    public void setUsername(String username)
    {
        m_username = username;
    }

    public void setUserpass(String userpass)
    {
        m_userpass = userpass;
    }

    public Email_Autherticatorbean(String username, String userpass)
    {
        super();
        setUsername(username);
        setUserpass(userpass);

    }
    public PasswordAuthentication getPasswordAuthentication()
    {

        return new PasswordAuthentication(m_username,m_userpass);
    }
}