Read data from Real time database in Servlet

[hr lumiins]

Hi All,

able to write data in firebase databse and Getting an error when read data from Servlet:

Code to Read

public HttpResponse firebaseGet(String path) throws IOException {
    // Make requests auth'ed using Application Default Credentials
    Credential credential = GoogleCredential.getApplicationDefault().createScoped(FIREBASE_SCOPES);
    HttpRequestFactory requestFactory = httpTransport.createRequestFactory(credential);

    GenericUrl url = new GenericUrl(firebaseDbUrl+path);

    return requestFactory.buildGetRequest(url).execute();
}

Output:

[s~taxideals20/20180402t002617.408725620079372773].<stdout>: ERROR com.google.api.client.http.HttpResponseException: 401 <h1>Unauthorized</h1> <h2>Error 401</h2>

sample

https://github.com/GoogleCloudPlatform/java-docs-samples/tree/master/appengine/firebase-tictactoe

[Kenworth (Google Cloud Platform)]

The link you provided is using Java 7 runtime on GAE (deprecated). Did you try following the Java 8 tutorial?