mailhelper.java

展示使用J2EE容器实现安全机制

package com.jdon.mailer.ejb;

import java.util.*;

import javax.naming.InitialContext;
import javax.activation.DataHandler;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Transport;
import javax.mail.Session;
import javax.mail.Multipart;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.InternetAddress;

import com.jdon.mailer.exceptions.MailerAppException;
import com.jdon.mailer.util.JNDINames;
import com.jdon.mailer.Mail;

import org.apache.log4j.Logger;

/**
 * A helper class to create and send mail.
 */
public class MailHelper {


   private final static Logger logger = Logger.getLogger(MailHelper.class);

  /**
   * This method creates an email message and sends it using the
   * J2EE mail services
   * @param mailContent contains the message contents to send
   */
  public void createAndSendMail(Mail mail) throws MailerAppException {
    try {
      logger.debug(" --> lookup mail session");
      InitialContext ic = new InitialContext();
      Session session = (Session) ic.lookup(JNDINames.MAIL_SESSION);

      Message msg = new MimeMessage(session);

      logger.debug(" --> beigin to set mail value");
      msg.setFrom(new InternetAddress(mail.getFromAddress()));
      msg.setRecipients(Message.RecipientType.TO,
                        InternetAddress.parse(mail.getToAddress(), false));
      msg.setSubject(mail.getSubject());

      msg.setText(mail.getContent());
      /**
      String contentType = "text/html";
      StringBuffer sb = new StringBuffer(mail.getContent());
      msg.setDataHandler(new DataHandler(
          new ByteArrayDataSource(sb.toString(), contentType)));
      msg.setHeader("X-Mailer", "JavaMailer");
      */

      msg.setSentDate(new Date());

      logger.debug(" --> beigin to send now ....");
      Transport.send(msg);
    } catch (Exception e) {
      logger.error("createAndSendMail exception : " + e);
      throw new MailerAppException("Failure while sending mail");
    }
  }
}