Dear Sir：

       

         I am a new one in studing ovirt engine.Now,I have a Servlet in org.ovirt.engine.ui.frontend.server.gwt package.

         I want to call Frontend.getInstance().getLoginHandler().onLoginSuccess(userName, password, domain) to set session for restapi in this servlet.

         But when I visit this servlet,it occur to show me an error which just like "JBWEB000071: root cause java.lang.ClassNotFoundException: org.ovirt.engine.ui.uicompat.IFrontendActionAsyncCallback from [Module "deployment.engine.ear.webadmin.war:main" from Service Module Loader]". I found that this error is occured by calling Frontend.getInstance().

         Can you tell me how to resolve this problem or a new way to set and resume restapi session in a servlet package of org.ovirt.engine.ui.front.server.gwt like the RestApiSessionManager in org.ovirt.engine.ui.webadmin.plugin.restapi package?

           thanks!

Best Regards!