Have you activated Security & Authentication in the web.xml? http://code.google.com/appengine/docs/java/config/webxml.html#Security_and_Authentication
<http://code.google.com/appengine/docs/java/config/webxml.html#Security_and_Authentication> fabrizio On Wed, Apr 13, 2011 at 7:44 AM, Peter <ptr...@gmail.com> wrote: > Folks, > > I am a bit confused on how to use user services correctly. > > Here is the relevant code snippet: > > public class GreetingServiceImple extends RemoteServiceServlet implements > GreetingService { > > public string greetServer() { > UserService us = UserServiceFactory.getUserService(); > User user = us.getCurrentUser(); > ... > } > } > > The problem is, the value returned by getCurrentUser is always null, > irrespective of whether I deploy locally or at appspot. > > I am using Firefox as the client. I have two tabs open. On one tab, I am > signed into Google mail using my gmail account. On the other tab, I am > trying to run the app that I am working on. > > What is it that I am missing? > > Thank you in advance for your help. > > Regards, > Peter > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > google-appengine-java@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
