Can anyone identify what i'm doing wrong with this API request?

Question

I'm new to REST API and trying to work with the Get Quotes method in the Tradier API to retrieve market data about a specific company. The request is giving me back response 400 with my code below. Here is a link to the API documentation: https://documentation.tradier.com/brokerage-api/markets/get-quotes

try {
        // MAKE REQUEST TO API
        URL url = new URL("https://sandbox.tradier.com/v1/markets/quotes");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("Authorization", "Bearer <token>");
        connection.setRequestMethod("GET");
        connection.setRequestProperty("Accept", "application/json");
        connection.addRequestProperty("symbols", "AAPL");
        connection.connect();

        // GET INPUT STREAM RESPONSE FROM REQUEST
        BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), Charset.forName("UTF-8")));

        // TAKING BITS AND BYTES FROM BUFFERED READER TO BUILD IT INTO A STRING OBJECT
        StringBuilder json = new StringBuilder();

        String line;
        while ((line = br.readLine()) != null) {
            json.append(line);
        }

        JSONObject obj = new JSONObject(json.toString());
        System.out.println(obj);

    } catch (Exception ex) {
        System.out.println(ex.getMessage());
    }

I will try to do it that way if I can't figure it out using HttpURLConnection. I was trying to do it this way because this is the way my professor demonstrated it with the API she was using in class — TRG311, Nov 21 '20 at 18:27
Note: you might want to remove your api token from the question — OneCricketeer, Nov 21 '20 at 18:28
The message says: Server returned HTTP response code: 400 for URL: https://sandbox.tradier.com/v1/market/quotes — TRG311, Nov 21 '20 at 18:28
What happens if you just add `?symbols=AAPL`, to the end of the url — OneCricketeer, Nov 21 '20 at 18:33
You're setting the required parameter "symbols" as a request property. See the example at the link you provided which has the URL as "v1/markets/quotes?symbols=AAPL" — Paul, Nov 21 '20 at 18:34
Thanks you guys it worked when I just put the ?symbols=AAPL into the url. I didn't think to do that because in the Java example they demonstrate in the docs they add it as a parameter. — TRG311, Nov 21 '20 at 18:41
Does this answer your question? [How to add parameters to HttpURLConnection using POST using NameValuePair](https://stackoverflow.com/questions/9767952/how-to-add-parameters-to-httpurlconnection-using-post-using-namevaluepair) — priyranjan, Nov 22 '20 at 12:51

priyranjan · Answer 1 · 2020-11-22T13:10:38.070

(1st Method)

change your url to :--

"https://api.tradier.com/v1/markets/quotes?symbols=AAPL,VXX190517P00016000&greeks=false" ( I mean manually add it)

(2nd Method)

OR,

add RequestParam like below code:----

try{

 URL url = new URL("https://sandbox.tradier.com/v1/markets/quotes");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("Authorization", "Bearer <token>");
        connection.setRequestMethod("GET");
        connection.setRequestProperty("Accept", "application/json");
    Uri.Builder builder = new Uri.Builder()
            .appendQueryParameter("symbols", "AAPL,VXX190517P00016000")
            .appendQueryParameter("greeks", "false");
    String query = builder.build().getEncodedQuery();
OutputStream os = connection.getOutputStream();
BufferedWriter writer = new BufferedWriter(
            new OutputStreamWriter(os, "UTF-8"));
writer.write(query);
writer.flush();
writer.close();
os.close();

connection.connect();
 // GET INPUT STREAM RESPONSE FROM REQUEST
        BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream(), Charset.forName("UTF-8")));

        // TAKING BITS AND BYTES FROM BUFFERED READER TO BUILD IT INTO A STRING OBJECT
        StringBuilder json = new StringBuilder();

        String line;
        while ((line = br.readLine()) != null) {
            json.append(line);
        }

        JSONObject obj = new JSONObject(json.toString());
        System.out.println(obj);

    } catch (Exception ex) {
        System.out.println(ex.getMessage());
    }

3rd Method

try{
 final HttpUriRequest request = RequestBuilder
        .get("https://api.tradier.com/v1/markets/quotes")
        .addHeader("Authorization", "Bearer <TOKEN>")
        .addHeader("Accept", "application/json")
        .addParameter("symbols", "AAPL,VXX190517P00016000")
        .addParameter("greeks", "false")
        .build();

    final HttpResponse response = HttpClientBuilder.create().build().execute(request);
    final String jsonString = EntityUtils.toString(response.getEntity());
    final JsonNode json = new ObjectMapper().readTree(jsonString);
    
    System.out.println(response.getStatusLine().getStatusCode());
    System.out.println(json);}
catch(Exception ex){
ex.printStack();
}

Can anyone identify what i'm doing wrong with this API request?

1 Answers1