tSwymH9M

1public static String postApache(String url) {
2            String dataFormServer = "";
3            String dataToServer="?method=getInfo&nonce=20";
4            String key = "xxx";
5            String secretKey = "yyy";
6            String signedData = calculateHMAC(dataToServer, secretKey);
7            try {
8                CloseableHttpClient client = HttpClients.createDefault();
9                HttpPost httpPost = new HttpPost(url);
10                List<NameValuePair> params = new ArrayList<NameValuePair>(2);
11                params.add(new BasicNameValuePair("Key", key));
12                params.add(new BasicNameValuePair("Sign",signedData));
13
14                httpPost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
15                CloseableHttpResponse response = client.execute(httpPost);
16                HttpEntity entity = response.getEntity();
17                if (entity != null) {
18                    dataFormServer = org.apache.commons.io.IOUtils.toString(entity.getContent(), "cp1251");
19                }
20                else System.out.println("Error");
21            } catch (IOException e) {
22                e.printStackTrace();
23            }
24            return dataFormServer;
25        }
26	
27private static String calculateHMAC(String data, String key) {
28        SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes(), HMAC_SHA512);
29        Mac mac = null;
30        try {
31            mac = Mac.getInstance(HMAC_SHA512);
32            mac.init(secretKeySpec);
33        } catch (NoSuchAlgorithmException e) {
34            e.printStackTrace();
35        } catch (InvalidKeyException e) {
36            e.printStackTrace();
37        }
38        return toHexString(mac.doFinal(data.getBytes()));
39    }
40    private static  String toHexString(byte[] bytes) {
41        final  char[] hexArray = "0123456789ABCDEF".toCharArray();
42        char[] hexChars = new char[bytes.length * 2];
43        for ( int j = 0; j < bytes.length; j++ ) {
44            int v = bytes[j] & 0xFF;
45            hexChars[j * 2] = hexArray[v >>> 4];
46            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
47        }
48        return new String(hexChars);
49    }