Hi All,
I am trying to access contacts using gdata client library.when i am
trying to access the contacts i am facing following exception
java.lang.NullPointerException: No authentication header information
com.google.gdata.util.AuthenticationException.initFromAuthHeader(AuthenticationException.java:
96)
com.google.gdata.util.AuthenticationException.<init>(AuthenticationException.java:
67)
com.google.gdata.client.http.HttpGDataRequest.handleErrorResponse(HttpGDataRequest.java:
600)
com.google.gdata.client.http.GoogleGDataRequest.handleErrorResponse(GoogleGDataRequest.java:
563)
com.google.gdata.client.http.HttpGDataRequest.checkResponse(HttpGDataRequest.java:
552)
com.google.gdata.client.http.HttpGDataRequest.execute(HttpGDataRequest.java:
530)
com.google.gdata.client.http.GoogleGDataRequest.execute(GoogleGDataRequest.java:
535)
com.google.gdata.client.Service.getFeed(Service.java:1135)
com.google.gdata.client.Service.getFeed(Service.java:998)
com.google.gdata.client.GoogleService.getFeed(GoogleService.java:631)
com.google.gdata.client.Service.getFeed(Service.java:1017)
com.raisonne.oauth.CallBackAction.execute(CallBackAction.java:62)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Hers is the client code i have written to communicate with the service
GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey("xyz");
oauthParameters.setOAuthConsumerSecret("secret");
GoogleOAuthHelper oauthHelper = new
GoogleOAuthHelper(new
OAuthHmacSha1Signer());
oauthParameters.setScope(SCOPE);
oauthParameters.setOAuthVerifier(oauth_verifier);
oauthParameters.setOAuthToken(oauth_token);
oauthParameters.setOAuthTokenSecret(session.get("oauth_token_secret").toString());
String token =
oauthHelper.getAccessToken(oauthParameters);
ContactsService client=new ContactsService
("mydemoapp");
client.setOAuthCredentials(oauthParameters, new
OAuthHmacSha1Signer());
URL feedUrl = new URL("http://www.google.com/m8/feeds/
contacts/default/base");
ContactFeed resultFeed = client.getFeed(feedUrl,
ContactFeed.class);
for (int i = 0; i < resultFeed.getEntries().size();
i++) {
ContactEntry entry = (ContactEntry)
resultFeed.getEntries().get(i);
System.out.println("|\t" + (i + 1) + ": "
+ entry.getTitle().getPlainText());
}
i am getting this exception at this line
ContactFeed resultFeed = client.getFeed(feedUrl, ContactFeed.class);
can any one help me to find out what exactly i am doing wrong?
thanks in advance
--
You received this message because you are subscribed to the Google
Groups "Google Contacts, Shared Contacts and User Profiles APIs" group.
To post to this group, send email to
[email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://code.google.com/apis/contacts/community/forum.html
