java.io.IOException: Server returned HTTP response code: 400

API and Webhooks
1

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Description
I have the apiKey and secret for a “user-managed OAuth2 app” and the permission “scope meeting:read” “meeting:write” and “user:read”.
With this I can generate a token.
However, for all the following actions I get the HTTP response code: 400
e.g.: java.io.IOException: Server returned HTTP response code: 400 for URL: https://api.zoom.us/v2/users/me

Error
java.io.IOException: Server returned HTTP response code: 400 for URL: https://api.zoom.us/v2/users/me

Which App Type (OAuth / Chatbot / JWT / Webhook)?
OAuth

Which Endpoint/s?
https://api.zoom.us/v2/users/me

How To Reproduce (If applicable)
public static String getZoomUserInfo(String zoomApiKey, String zoomApiSecret) throws OAuthSystemException, OAuthProblemException, IOException {
String getUrl = “https://api.zoom.us/v2/users/me”;
URL url = new URL(getUrl);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod(“GET”);
//con.setRequestProperty(“Content-Type”, “application/json”);
con.setRequestProperty(“Authorization”, "Bearer " + OAuthTools.getZoomOAuthToken(zoomApiKey, zoomApiSecret));
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer content = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
content.append(inputLine);
}
in.close();
System.out.println(content.toString());
con.disconnect();
return content.toString();

}
public static final String TOKEN_REQUEST_URL = "https://zoom.us/oauth/token";
   public static String getZoomOAuthToken(String clientID, String clientSecret) throws OAuthSystemException, OAuthProblemException {

	   OAuthClient client = new OAuthClient(new URLConnectionClient());

        OAuthClientRequest request =
                OAuthClientRequest.tokenLocation(TOKEN_REQUEST_URL)
                .setGrantType(GrantType.CLIENT_CREDENTIALS)
                .setClientId(clientID)
                .setClientSecret(clientSecret)
                .buildQueryMessage();
        
        OAuthJSONAccessTokenResponse oAUthResponse = client.accessToken(request, OAuthJSONAccessTokenResponse.class);
        if (oAUthResponse != null) {
        	System.out.println(oAUthResponse.getBody());
        }
        String token = oAUthResponse.getAccessToken();

		return token;
   }
2

Hey @fritz.tester,

Thank you for reaching out to the Zoom Developer Forum. Are you able to share the response body you’re seeing with the 400 status code?

Thanks,
Max

3

Hey Max,

thanks for answering.
The respose returns the following as an error stream, even though these credentials were used to generate the token previously:
REsponseCode 400
{“code”:200,“message”:“Invalid api key or secret.”}

Since I also have a long-lived token, I alternatively tried to get a refresh token. However, this already returns response code 400 when requesting the token.

TokenRequestBuilder builder = OAuthClientRequest
.tokenLocation(Constant.TOKEN_REQUEST_URL)
.setGrantType(GrantType.REFRESH_TOKEN)
.setClientId(clientID)
.setClientSecret(clientSecret);
builder = builder.setRefreshToken(refreshToken);
OAuthClientRequest request = builder.buildQueryMessage();
request.addHeader(“Accept”, “application/json”);
request.addHeader(“Content-Type”, “application/json”);
// request.addHeader(“Content-Type”, “application/x-www-form-urlencoded”);
OAuthClient oauthClient = new OAuthClient(new URLConnectionClient());

OAuthJSONAccessTokenResponse oAUthResponse = oauthClient.accessToken(request, OAuthJSONAccessTokenResponse.class);

Am grateful for any help.
Greetings
Renate

4

I have solved the problem.
The correct gant_type for me was refresh_token.
The problem was that the refresh_token can only be used once.
With the access_token you get a new refresh_token that you have to use for the next access_token.

1 Like
5

Happy to hear you got the issue sorted out @fritz.tester ! :slight_smile:

Let us know if we can help with anything else.

Thanks,
Tommy

6

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