package com.jdon.asyncsender.util;import com.jdon.util.CastorHandler;import com.jdon.util.UtilValidate;import com.jdon.mailer.Mail;import org.apache.log4j.Logger;import com.jdon.asyncsender.util.JNDINames;public class MailUtil {  private final static Logger logger = Logger.getLogger(MailUtil.class);  public static String getMsgFromMail(Mail mail){    String msg = null;    try {      msg = CastorHandler.writeToString(Mail.MAPPINGFILE, mail);      if (UtilValidate.isEmpty(msg))        logger.warn(" the msg of the mail is null,mail is " + mail.getSubject());    } catch (Exception ex) {      logger.error(" getMsgFromMail error : " + ex);    }    return msg;  }  public static Mail getMailFromMsg(String msg){    Mail mail = null;    try {      mail = (Mail) CastorHandler.readFromString(Mail.MAPPINGFILE,          "com.jdon.mailer.Mail", msg);    } catch (Exception ex) {      logger.error(" getMailFromMsg error : " + ex);    }    return mail;  }}