public MimeMessage getMessage(String emailSetId, String mailId) {
   String hql =
       "from EmailUserSetting emailset where emailset.id = '" + Integer.valueOf(emailSetId) + "'";
   EmailUserSetting emailUserSetting = emailUserSettingDao.findEmailUserSetting(hql);
   Properties props = new Properties();
   Session session = Session.getDefaultInstance(props, null);
   Store store = null;
   Message message[] = null;
   try {
     store = session.getStore("pop3");
     store.connect(
         emailUserSetting.getPopService(),
         emailUserSetting.getEmailAddress(),
         emailUserSetting.getPassword());
     Folder folder = store.getFolder("INBOX");
     folder.open(Folder.READ_ONLY);
     message = folder.getMessages();
   } catch (NoSuchProviderException e) {
     e.printStackTrace();
   } catch (MessagingException e) {
     e.printStackTrace();
   }
   // System.out.println("Messages's length: "+message.length);
   MimeMessage pmm = null;
   for (int i = 0; i < message.length; i++) {
     pmm = (MimeMessage) message[i];
     String eId = null;
     try {
       eId = pmm.getMessageID();
     } catch (MessagingException e) {
       e.printStackTrace();
     }
     if (eId != null && eId.equals(mailId)) {
       return pmm;
     }
   }
   return null;
 }
  public String getMessages(String userId, String emailSetId) {

    String hql =
        "from EmailUserSetting emailset where emailset.id = '" + Integer.valueOf(emailSetId) + "'";
    EmailUserSetting emailUserSetting = emailUserSettingDao.findEmailUserSetting(hql);
    Properties props = new Properties();
    Session session = Session.getDefaultInstance(props, null);
    Store store = null;
    Message message[] = null;
    try {
      store = session.getStore("pop3");
      store.connect(
          emailUserSetting.getPopService(),
          emailUserSetting.getEmailAddress(),
          emailUserSetting.getPassword());
      Folder folder = store.getFolder("INBOX");
      folder.open(Folder.READ_ONLY);
      message = folder.getMessages();
    } catch (NoSuchProviderException e) {
      e.printStackTrace();
    } catch (MessagingException e) {
      e.printStackTrace();
    }
    System.out.println("Messages's length: " + message.length);
    PraseMimeMessage pmm = null;
    String jsonString = "{'mails':[";
    for (int i = 0; i < message.length; i++) {
      pmm = new PraseMimeMessage((MimeMessage) message[i]);
      try {
        String mailString = "{";
        mailString += "'mailId' : '" + pmm.getMessageId() + "',";
        mailString += "'theme':'" + pmm.getSubject() + "',";
        mailString += "'sender':'" + pmm.getFrom() + "',";
        pmm.setDateFormat("yy年MM月dd日  HH:mm:ss");
        mailString += "'time':'" + pmm.getSentDate() + "',";
        mailString += "'files':'";
        if (pmm.isContainAttach((Part) message[i])) {
          List<String> files = pmm.getFilenames();
          for (int j = 0; j < files.size(); j++) {
            mailString += files.get(j) + ";";
          }
          mailString += "',";
        } else {
          mailString += "',";
        }
        pmm.getMailContent((Part) message[i]);
        String content = pmm.getBodyText();
        content = content.replaceAll("\r|\n", "");
        mailString += "'content':'" + content + "'";

        mailString += "},";

        jsonString += mailString;
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
    jsonString = jsonString.substring(0, jsonString.length() - 1);
    jsonString += "]}";
    System.out.println(jsonString);
    return jsonString;
  }