2016년 1월 16일 토요일

Fitbit REST API : Getting an access_token

After Obtaining User's Consent,
Fitbit.com will redirect to your server.

This is a code for the server.

I'll store access_token and refresh_token.




@RequestMapping(value="/restTest", method=RequestMethod.GET)
public String restTest(@RequestParam(value="code", required=false) String code) {
    StringBuilder sb = new StringBuilder();
    if(code!=null) {
        HttpClient httpclient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(REST_URL_TO_GET_TOKEN);
        httpPost.setHeader("Authorization",AUTH_APPID_APPSECRET);
        List<NameValuePair> nvps = new ArrayList<NameValuePair>();
        nvps.add(new BasicNameValuePair("client_id", CLIENT_ID));
        nvps.add(new BasicNameValuePair("grant_type", "authorization_code"));
        nvps.add(new BasicNameValuePair("redirect_uri", REDIRECT_URL));
        nvps.add(new BasicNameValuePair("code", code));
        StringBuilder contentSb = new StringBuilder();
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(nvps));
            HttpResponse response = httpclient.execute(httpPost);
            HttpEntity resEntity = response.getEntity();
            if (resEntity != null) {
                BufferedReader rd = new BufferedReader(new InputStreamReader(
                        response.getEntity().getContent()));
                String line = null;
                while ((line = rd.readLine()) != null) {
                    contentSb.append(line);
                }
            }
            httpPost.abort();
        } catch (Exception e) {
            sb.append("Exception::" + e.getStackTrace().toString());
        }
        sb.append(contentSb.toString());

    } //if(code!=null)
    return sb.toString();
}




Authorization Header Example

This example assumes that the code URI parameter value in the callback URI was 1234567890.
POST https://api.fitbit.com/oauth2/token
Authorization: Basic Y2xpZW50X2lkOmNsaWVudCBzZWNyZXQ=
Content-Type: application/x-www-form-urlencoded

client_id=22942C&grant_type=authorization_code&redirect_uri=http%3A%2F%2Fexample.com%2Fcallback&code=1234567890
Example Response:
{
    "access_token": "eyJhbGciOiJIUzI1NiJ9.eyJleHAiOjE0MzAzNDM3MzUsInNjb3BlcyI6Indwcm8gd2xvYyB3bnV0IHdzbGUgd3NldCB3aHIgd3dlaSB3YWN0IHdzb2MiLCJzdWIiOiJBQkNERUYiLCJhdWQiOiJJSktMTU4iLCJpc3MiOiJGaXRiaXQiLCJ0eXAiOiJhY2Nlc3NfdG9rZW4iLCJpYXQiOjE0MzAzNDAxMzV9.z0VHrIEzjsBnjiNMBey6wtu26yHTnSWz_qlqoEpUlpc",
    "expires_in": 3600,
    "refresh_token": "c643a63c072f0f05478e9d18b991db80ef6061e4f8e6c822d83fed53e5fafdd7",
    "token_type": "Bearer",
    "user_id": "26FWFL"
}


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