private final static String[] hexDigits = {
      "0", "1", "2", "3", "4", "5", "6", "7", 
      "8", "9", "a", "b", "c", "d", "e", "f"}; 

    public static String byteArrayToHexString(byte[] b){
        StringBuffer resultSb = new StringBuffer();
        for (int i = 0; i < b.length; i++){
            resultSb.append(byteToHexString(b[i]));
        }
        return resultSb.toString();
    }

    private static String byteToHexString(byte b){
        int n = b;
        if (n < 0)
            n = 256 + n;
        int d1 = n / 16;
        int d2 = n % 16;
        return hexDigits[d1] + hexDigits[d2];
    }

    public static String MD5Encode(String origin){
        String resultString = null;
            try {
                
                resultString=new String(origin);
                MessageDigest md = MessageDigest.getInstance("MD5");
                
                resultString.trim();

                resultString=byteArrayToHexString(md.digest(resultString.getBytes("UTF-8")));
            }catch (Exception ex){}
            return resultString;
        }

    public static void main(String[] args) 
    {
    
        String data = "189022881112011111118:09sz0000123456789987654321";
        System.out.println(MD5Encode(data));
    }