邮件发送的问题

import org.springframework.mail.javamail.MimeMessagePreparator

import java.util.Date;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.Message;

import javax.mail.Multipart;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeBodyPart;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import org.springframework.mail.javamail.*;



public class OneMimeMessagePreparator implements MimeMessagePreparator{



      public void prepare(MimeMessage mm) throws Exception {

      mm.setRecipient(Message.RecipientType.TO , new InternetAddress( "*****@126.com" ));

      mm.setFrom( new InternetAddress( "*****@126.com" ));

      mm.setSubject( "I am nocmear" );

      Multipart mp = new MimeMultipart();

      MimeBodyPart mbp = new MimeBodyPart();

      mbp.setText( "hello Kitty " );

      mp.addBodyPart(mbp);

      mm.setContent(mp);

      mm.setSentDate( new Date());

      }

}

public class a{

   public static void main(String[] args){JavaMailSenderImpl mail = new JavaMailSenderImpl();

          Properties prop = new Properties();

          prop.setProperty("mail.smtp.auth", "true");

          mail.setHost("smtp.126.com");

          mail.setPort(25);

          mail.setJavaMailProperties(prop);

          mail.setUsername("laihui99@126.com");

          mail.setPassword("laihui1237");

          mail.send(new OneMimeMessagePreparator() )

}