public final static String md5(String s) {        char hexDigits[] = {‘0‘,‘1‘,‘2‘,‘3‘,‘4‘,‘5‘,‘6‘,‘7‘,‘8‘,‘9‘,‘a‘,‘b‘,‘c‘,‘d‘,‘e‘,‘f‘};        try {            byte[] strTemp = s.getBytes();            MessageDigest mdTemp = MessageDigest.getInstance("MD5");            mdTemp.update(strTemp);            byte[] md = mdTemp.digest();            int j = md.length;            char str[] = new char[j * 2];            int k = 0;            for (int i = 0;i < j;i++) {                byte byte0 = md[i];                str[k++] = hexDigits[byte0 >>> 4 & 0xf];                str[k++] = hexDigits[byte0 & 0xf];            }            return new String(str).toUpperCase();        } catch (Exception e) {            return null;        }    }

import org.apache.commons.codec.digest;public static String encryptMD5(String str) {        return DigestUtils.md5Hex(str);    }