java mail 通过代理发邮件或直接发送邮件

/**
 * 需要的jar包activation.jar,j2ee.jar,mail.jar ，在资源java mail开发所需jar包中有下载
 */

import java.util.Date;
import java.util.Properties;
import java.security.Security;
import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
public class MailTest {
/**
 * 通过代理发送邮件
 */
    /**
      * @param args
     */
    public static void main(String[] args) throws Exception {
     MailTest test = new MailTest();
     //发送邮件
     //test.sendmail();
     //通过代理发送邮件
     test.sendMailByProxy();
     }

    private void sendMailByProxy()throws Exception{
        Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
//      final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
     //设置代理服务器
      Properties props = System.getProperties();
      props.setProperty("proxySet", "true");
      props.setProperty("socksProxyHost", "192.168.1.1");
      props.setProperty("socksProxyPort", "1080");
      props.setProperty("mail.smtp.host", "smtp.163.com");
    
      //props.setProperty("mail.smtp.socketFactory.class", SSL_FACTORY);
      props.setProperty("mail.smtp.socketFactory.fallback", "false");
      props.setProperty("mail.smtp.port", "25");
      props.setProperty("mail.smtp.socketFactory.port", "25");
      props.put("mail.smtp.auth", "true");
      props.put("mail.debug", "true");
      props.put("mail.store.protocol", "pop3");
      props.put("mail.transport.protocol", "smtp");
     final String username = "用户名";
     final String password = "密码";
    
     //使用验证
      Session session = Session.getDefaultInstance(props,
             new Authenticator() {
                 protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
                     return new javax.mail.PasswordAuthentication(username,
                              password);
                  }
              });
      MimeMessage message = new MimeMessage(session);
      Address address = new InternetAddress("[email protected]");
      Address toAaddress = new InternetAddress("[email protected]");
    
      message.setFrom(address);
      message.setRecipient(MimeMessage.RecipientType.TO, toAaddress);
      message.setSubject("测试");
      message.setText("test");
      message.setSentDate(new Date());
      Transport.send(message);
      System.out.println("邮件发送！");

    }
 public void sendmail() {
  try {
   String host = "smtp.163.com";
   String from = "[email protected]";
   String to = "[email protected]";
   String username = "用户名";
   String password = "密码";
   String body = "This is a test";
   String subject = "Email Test";
   SmtpAuth sa = new SmtpAuth();
   sa.getuserinfo(username, password);
   Session session;
   MimeMessage message;
   Properties props = System.getProperties();
   props.setProperty("proxySet", "true");
   props.setProperty("socksProxyHost", "192.168.1.1");
   props.setProperty("socksProxyPort", "808");
   props.put("mail.smtp.auth", "true");
   props.put("mail.smtp.host", host);
   session = Session.getInstance(props, sa);
   session.setDebug(true);
   message = new MimeMessage(session);
   message.setFrom(new InternetAddress(from));
   message.setRecipient(Message.RecipientType.TO, new InternetAddress(
     to));
   message.setSubject(subject);
   MimeBodyPart mbp = new MimeBodyPart();
   mbp.setText(body);
   Multipart mp = new MimeMultipart();
   mp.addBodyPart(mbp);
   message.setContent(mp);
   message.setSentDate(new java.util.Date());
   Transport transport = session.getTransport("smtp");
   transport.connect(host, username, password);
   transport.send(message);
  } catch (MessagingException e) {
   System.out.println("error" + e.getMessage());
  }
 }

 class SmtpAuth extends javax.mail.Authenticator {
  private String user, password;

  public void getuserinfo(String getuser, String getpassword) {
   user = getuser;
   password = getpassword;
  }

  protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
   return new javax.mail.PasswordAuthentication(user, password);
  }
 }
}