Which JavaEE components are you using? We were using Google App Engine for quite a while (and still do for one application), not the full JavaEE stack is supported though.
Spring MVC wasn't supported when Google App Engine started, I think it is supported now; if I remember correctly you needed to change a few things to make it work and switch off annotation scanning to reduce startup times. Spring MVC is not JavaEE by the way.
Jan Vladimir Mostert
Idea Incubator
Which JavaEE components are you using? We were using Google App Engine for quite a while (and still do for one application), not the full JavaEE stack is supported though.