Tiktok fetch an access token using an authorizaiton code problems in java spring boot

Question

I am trying to exchange my authorizatoin code for an access token. I keep getting a "request parameters are malformed" error. I can curl the endpoint just fine but for some reason I can't get a valid response in the server.

Here is the code I am using:

 public TikTokTokenResponse getTiktokAccessToken(String code, String redirectUrl) throws Exception {
    URI uri = new URI(String.format("https://open.tiktokapis.com/v2/oauth/token/"));

    MultiValueMap<String, String> body = new LinkedMultiValueMap<>();
    body.add("client_key", tiktokClientKey);
    body.add("client_secret", tiktokClientSecret);
    body.add("code", code);
    body.add("grant_type", "authorization_code");
    body.add("redirect_uri", redirectUrl);

    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
    headers.setCacheControl("no-cache");

    HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<>(body, headers);

    log.info("Getting tiktok access token " + uri.toString());
    return restTemplate.postForObject(uri, requestEntity, TikTokTokenResponse.class);
}

Kristian Martinez · Accepted Answer · 2025-11-20 02:43:00Z

After a lot of trial and error I figured out the problem. In comparing my postman and curl requests that were working I noticed that they weren't url encoding the code. And after reviewing the documentation for tiktok I noticed it said the code value should be URL decoded. So looking at my spring boot request above I realized by default it url encoded all the parameters. So I built the request body manually to avoid this and finally it worked! See code below:

public TikTokTokenResponse getTiktokAccessToken(String code, String redirectUrl) throws Exception {
    URI uri = new URI(String.format("https://open.tiktokapis.com/v2/oauth/token/"));

    //Manually construct the body to prevent URL-encoding of the 'code' parameter
    String body = "client_key=" + URLEncoder.encode(tiktokClientKey, StandardCharsets.UTF_8) +
            "&client_secret=" + URLEncoder.encode(tiktokClientSecret, StandardCharsets.UTF_8) +
            "&grant_type=authorization_code" +
            "&redirect_uri=" + URLEncoder.encode(redirectUrl, StandardCharsets.UTF_8) +
            "&code=" + code;

    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
    headers.setCacheControl("no-cache");

    HttpEntity<String> requestEntity = new HttpEntity<String>(body, headers);

    log.info("Getting tiktok access token " + uri.toString());
    return restTemplate.postForObject(uri, requestEntity, TikTokTokenResponse.class);
}

Collectives™ on Stack Overflow

Tiktok fetch an access token using an authorizaiton code problems in java spring boot

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related