Hello, Is this related to the Calendar API? You mentioned trying to retrieve "Contacts" (which is not the API being supported in this forum) and your code shows that you are trying to retrieve Docs. Also, try to print the message returned by the exception as it might give more information as to what is wrong with your code.
Best, Alain On Thu, Jun 9, 2011 at 12:12 AM, manoj <[email protected]> wrote: > Hi, > > I am trying to create a simple app on the app engine where users log > in through their Google account, and then it adds an event to their > calendar. > And I am using Java along with Eclipse for this. I have found a simple > code online: > > public void doGet(HttpServletRequest req, HttpServletResponse resp) > throws ServletException, IOException { > // Create an instance of GoogleOAuthParameters > GoogleOAuthParameters oauthParameters = new > GoogleOAuthParameters(); > oauthParameters.setOAuthConsumerKey(CONSUMER_KEY); > oauthParameters.setOAuthConsumerSecret(CONSUMER_SECRET); > oauthParameters.setScope("http://docs.google.com/feeds/";); > > GoogleOAuthHelper oauthHelper = new GoogleOAuthHelper( > new OAuthHmacSha1Signer()); > > // Remember the token secret that we stashed? Let's get it > back > // now. We need to add it to oauthParameters > String oauthTokenSecret = (String) > req.getSession().getAttribute( > "oauthTokenSecret"); > oauthParameters.setOAuthTokenSecret(oauthTokenSecret); > > // The query string should contain the oauth token, so we > can just > // pass the query string to our helper object to correctly > // parse and add the parameters to our instance of > oauthParameters > > oauthHelper.getOAuthParametersFromCallback(req.getQueryString(), > oauthParameters); > > try { > > // Now that we have all the OAuth parameters we > need, we can > // generate an access token and access token secret. > These > // are the values we want to keep around, as they > are > // valid for all API calls in the future until a > user revokes > // our access. > String accessToken = > oauthHelper.getAccessToken(oauthParameters); > String accessTokenSecret = > oauthParameters.getOAuthTokenSecret(); > > // In a real application, we want to redirect the > user to a new > // servlet that makes API calls. For the safe of > clarity and > simplicity, > // we'll just reuse this servlet for making API > calls. > oauthParameters = new GoogleOAuthParameters(); > oauthParameters.setOAuthConsumerKey(CONSUMER_KEY); > > oauthParameters.setOAuthConsumerSecret(CONSUMER_SECRET); > > // This is interesting: we set the OAuth token and > the token secret > // to the values extracted by oauthHelper earlier. > These values are > // already in scope in this example code, but they > can be populated > // from reading from the datastore or some other > persistence > mechanism. > oauthParameters.setOAuthToken(accessToken); > > oauthParameters.setOAuthTokenSecret(accessTokenSecret); > oauthParameters.setOAuthCallback(" > http://www.facebook.com";); > > > oauthHelper.getUnauthorizedRequestToken(oauthParameters); > > // Create an instance of the DocsService to make API > calls > DocsService client = new DocsService("Malware > Inc."); > > // Use our newly built oauthParameters > client.setOAuthCredentials(oauthParameters, new > OAuthHmacSha1Signer()); > > URL feedUrl = new URL(" > https://docs.google.com/feeds/default/ > private/full"); > DocumentListFeed resultFeed = > client.getFeed(feedUrl, > DocumentListFeed.class); > for (DocumentListEntry entry : > resultFeed.getEntries()) { > > resp.getWriter().println(entry.getTitle().getPlainText()); > } > > } catch (OAuthException e) { > // Something went wrong. Usually, you'll end up here > if we have > invalid > // oauth tokens > resp.getWriter().println("Here is the problem"); > //Server shows 500 problem > } catch (ServiceException e) { > // Handle this exception > } > } > > I have registered my application and added the KEY and Secret above > the function, but when I deploy it to the app engine it gives a 500 > server error. > Could someone post a simple java program that uses gdata and oauth to > log in a Google user and print the contacts on the screen? > Thanks. > > -Manoj > > -- > You received this message because you are subscribed to the Google > Groups "Google Calendar Data API" 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/calendar/community/forum.html > -- Alain Vongsouvanh -- You received this message because you are subscribed to the Google Groups "Google Calendar Data API" 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/calendar/community/forum.html
