How to deploy existing project to Google App Engine?


I’m trying to deploy an existing vaadin project to GAE.
But I’m constantly getting an error:
ClassNotFoundException: com.vaadin.server.GAEApplicationServlet

This is what I’ve done:

  • commented out the @WebServlet annotation in my UI class
  • projec properties, checked: use Google App Engine. Thereby some libraries were added to my WEB-INF/lib folder: gwt-servlet, jsr107, some appendine-*.
  • created the appengine-web.xml
  • I’m using latest v7.1.1
  • created the web.xml:



Where could this exception come from?

It’s called GAEVaadinServlet.