API require GET method but need to send parameters

Question

i need to send some parameters to the API which accept as it seems only GET method...if i join parameters Im unable to send it through GET method and with POST method I'm getting 404 - not found for the call...

already tried different methods of joining parameters to the call but no luck

// Documentation - https://coinmarketcap.com/api/documentation/v1/#section/Quick-Start-Guide
String apiKey = "707e6117-e462-4de3-9748-98ab6a467f0c"; // my temp key feel free to use it 
HttpURLConnection urlConnection = null;
URL url = new URL("https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest");
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("POST");
urlConnection.setReadTimeout(10000);
urlConnection.setConnectTimeout(15000);
urlConnection.setRequestProperty("Content-Type", "application/json");
urlConnection.setRequestProperty("X-CMC_PRO_API_KEY", apiKey);
Map<String, String> parameters = new HashMap<>();
parameters.put("start", "1");
parameters.put("limit", "5000");
parameters.put("convert", "USD");
urlConnection.setDoOutput(true);
DataOutputStream out = new DataOutputStream(urlConnection.getOutputStream());
out.writeBytes(ParameterStringBuilder.getParamsString(parameters));
out.flush();
out.close();
urlConnection.connect();
int status = urlConnection.getResponseCode();
String message = urlConnection.getResponseMessage();

I would like to have results from API

ortis · Accepted Answer · 2019-03-29 06:17:23Z

1

The documentation only mention GET method. Add the parameters as standard HTTP GET parameters:

    String apiKey = "707e6117-e462-4de3-9748-98ab6a467f0c"; 
    final String request = "start=1&limit=500&convert=USD"; 
    HttpURLConnection urlConnection = null;
    URL url = new URL("https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest?" + request);
    urlConnection = (HttpURLConnection) url.openConnection();
    urlConnection.setRequestMethod("GET");
    urlConnection.setReadTimeout(10000);
    urlConnection.setConnectTimeout(15000);
    urlConnection.setRequestProperty("Content-Type", "application/json");
    urlConnection.setRequestProperty("X-CMC_PRO_API_KEY", apiKey);

    try (BufferedReader br = new BufferedReader(new InputStreamReader(urlConnection.getInputStream())))
    {
        String line = br.readLine();

        while (line != null)
        {
            System.out.println(line);
            line = br.readLine();
        }

    }

answered Mar 29, 2019 at 6:17

ortis

2,2442 gold badges18 silver badges19 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Jan Ovesny Over a year ago

Thank you guys! bouth of you... it finally wors:)

suresh · Accepted Answer · 2019-03-29 06:16:57Z

String apiKey = "707e6117-e462-4de3-9748-98ab6a467f0c"; // my temp key feel free to use it
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);
        RestTemplate restTemplate = new RestTemplate();
        String url = "https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest";

        MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
        map.add("start", "1");
        map.add("limit", "5000");
        map.add("convert", "USD");
        map.add("ReadTimeout", "10000");
        map.add("ConnectTimeout", "15000");
        map.add("X-CMC_PRO_API_KEY", apiKey);
        System.out.println(map);
        HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(map, headers);
        ResponseEntity<String> response = restTemplate.postForEntity(url, request, String.class);
        if (response.getStatusCode().is2xxSuccessful()) {
            System.out.println(response.getBody());
        }

Collectives™ on Stack Overflow

API require GET method but need to send parameters

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related