/**
     * md5加密
     */
    public static String MD5Encode(String origin) {
        String resultString = null;
        try {
            resultString = new String(origin);
            MessageDigest md = MessageDigest.getInstance("MD5");
            resultString = byteArrayToHexString(md.digest(resultString
                .getBytes(
 
"UTF-8")));
        } catch (NoSuchAlgorithmException e) {
        }
        return resultString;
    }