Leon, I may have originally misdiagnosed your issue. Where did you place the JAR file? If you placed it in your JDK's lib/ext directory, it could cause dev_appserver to incorrectly think the class belongs to a package that we don't support. You'll need to put this JAR file under WEB-INF/lib and make sure it's in your build path.
On Mon, Dec 7, 2009 at 10:58 AM, Ikai L (Google) <ika...@google.com> wrote: > Yes, App Engine suggests external JARs. What is likely happening is that > the library is using a class that is not on the whitelist. Since it is an > MSN Messenger app, this likely has to do with classes that require socket > communication, which we do not allow. Have you looked into the XMPP service? > > > On Mon, Dec 7, 2009 at 2:19 AM, Leon <yudong.w...@gmail.com> wrote: > >> I have trying to deploy a web MSN Messenger app to GAE and the >> following error appears. >> >> java.lang.NoClassDefFoundError: rath.msnm.MSNMessenger is a restricted >> class. Please see the Google App Engine developer's guide for more >> details. >> >> The app used an external jar includes rath.msnm.MSNMessenger class. >> Does GAE support external jars? >> >> >> Thank you! >> >> Leon >> >> -- >> >> 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-j...@googlegroups.com. >> To unsubscribe from this group, send email to >> google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2bunsubscr...@googlegroups.com> >> . >> For more options, visit this group at >> http://groups.google.com/group/google-appengine-java?hl=en. >> >> >> > > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > -- Ikai Lan Developer Programs Engineer, Google App Engine -- 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-j...@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.