小弟不才，提问JavaMail问题，100相送各路大侠！

Question

将activation.jar copy到你的resin下的lib目录或是设置到classpath下

Answer 1

你用google查关键字：javamail+authenticator就可以找到你要的解决方案了，需要将你的用户名和密码加进去

Answer 2

楼上两位说的很全了,再给你个例子
http://www.javaresearch.org/article/showarticle.jsp?column=2&thread=12137

Answer 3

给你一个例子。
package jmail;
import com.sun.mail.imap.Utility;import javax.mail.internet.*;
import javax.mail.Session;
import javax.mail.MessagingException;
import javax.mail.Message;
import javax.mail.Transport;
import javax.activation.FileDataSource;
import javax.activation.DataHandler;
import java.util.Properties;
import java.util.Date;
import java.util.ArrayList;
import java.io.UnsupportedEncodingException;
/**
 * Created by IntelliJ IDEA.
 * User: Administrator
 * Date: 2004/12/01
 * Time: 13:27:40
 * To change this template use File | Settings | File Templates.
 */
public class SendJavaMail {    public SendJavaMail() {
    }
    public static void main(String[] args){
        try {
            Properties properties = System.getProperties();
            properties.put("mail.smtp.host","172.16.8.3");
            Session sendSession = Session.getInstance(properties,null);
            System.out.println(sendSession.getProperty("mail.smtp.host"));
            InternetAddress[] mailTo = InternetAddress.parse("[email protected]");
            Message message = new MimeMessage(sendSession);
            message.setFrom(new InternetAddress("[email protected]"));
            message.setRecipients(Message.RecipientType.TO,mailTo);
            message.setSubject("This message is sent by javamail");
            MimeMultipart multipart = new MimeMultipart();
            MimeBodyPart bodyPart = new MimeBodyPart();
            bodyPart.setContent("This is a mail with file","text/html;charset=GB2312");
            multipart.addBodyPart(bodyPart);
            ArrayList attachment = new ArrayList();
            attachment.add(0,"picture2.jpg");
            attachment.add(1,"picture3.jpg");
            attachment.add(2,"picture4.jpg");
            attachment.add(3,"picture5.jpg");
            message.setContent(multipart);
            message.setSentDate(new Date());
            Transport transport = sendSession.getTransport("smtp");            transport.connect("server","","");
            System.out.println(transport.toString());
            transport.sendMessage(message,mailTo);
            transport.close();
            System.out.println("The mail has sent");
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (MessagingException me){
            me.printStackTrace();
        }
    }
}