private static String getMD5(String input) {
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			byte[] messageDigest = md.digest(input.getBytes());
			BigInteger number = new BigInteger(1, messageDigest);
			String hashtext = number.toString(16);
			while (hashtext.length() < 32) {
				hashtext = "0" + hashtext;
			}
			return hashtext;
		} catch (NoSuchAlgorithmException e) {
			throw new RuntimeException(e);
		}
	}