/**

     * 发邮件

     * @param email

     * @param subject

     * @param body

     * @throws UnsupportedEncodingException

     */

    public static void sendEmail(String email, String subject, String body)

            throws UnsupportedEncodingException,NoSuchProviderException,MessagingException,Exception {

        try {

            Properties props = new Properties();

            String server=getPropertiesByKey("mail.smtp.host");

            System.out.println("server:"+server);

            props.put("mail.smtp.host", server);

            props.put("mail.smtp.port", "25");

            props.put("mail.smtp.auth", "true");

            String user=getPropertiesByKey("mail.sendemail");

            String password=getPropertiesByKey("mail.password");

            String from=getPropertiesByKey("mail.senduser");

            Transport transport = null;

            Session session = Session.getDefaultInstance(props, null);

            transport = session.getTransport("smtp");

            transport.connect(server, user, password);

            MimeMessage msg = new MimeMessage(session);

            msg.setSentDate(new Date());

            InternetAddress fromAddress = new InternetAddress(user, from,

                    "UTF-8");

            msg.setFrom(fromAddress);

            String[] emails=email.split(";");

            InternetAddress[] toAddress = new InternetAddress[emails.length];

            for(int i=0;i<emails.length;i++){

                toAddress[i] = new InternetAddress(emails[i]);

            }

            msg.setRecipients(Message.RecipientType.TO, toAddress);

            //System.out.println("subject:"+subject);

            msg.setSubject(subject, "UTF-8");

            Multipart mainPart=new MimeMultipart();

            //创建一个包含Html内容的MimeBodyPart

            MimeBodyPart htmlText=new MimeBodyPart();

            //设置HTML内容

            htmlText.setContent(body,"text/html;charset=utf-8");  //"text/html;charset=utf-8"

            mainPart.addBodyPart(htmlText);

            msg.setContent(mainPart);

            //msg.setText(body, "UTF-8");

            //msg.saveChanges();

            //transport.sendMessage(msg, msg.getAllRecipients());

            transport.sendMessage(msg, msg.getAllRecipients());

        } catch (NoSuchProviderException e) {

            e.printStackTrace();

            throw e;

        } catch (MessagingException e) {

            e.printStackTrace();

            throw e;

        }catch (Exception e) {

            e.printStackTrace();

            throw e;

        }

    }

/**

    * excel导出中文文件名

    * @param s

    * @return

    */

   public static String toUtf8String(String s)

   {

       StringBuffer sb = new StringBuffer();

       for (int i=0;i<s.length();i++){

       char c = s.charAt(i);

       if (c >= 0 && c <= 255) {

       sb.append(c);

       } else {

       byte[] b;

       try {

       b = Character.toString(c).getBytes("utf-8");

       } catch (Exception ex) {

       System.out.println(ex);

       b = new byte[0];

       }

      for (int j = 0; j < b.length; j++) {

       int k = b[j];

       if (k < 0) k += 256;

       sb.append("%" + Integer.toHexString(k).

       toUpperCase());

      }

      }

      }

      return sb.toString();

}