SessionUtils.validSessionVerification(request, mapping);
  public ActionForward execute(ActionMapping mapping, ActionForm form,                                HttpServletRequest request,                                HttpServletResponse response)      throws Exception {    HttpSession sessao = request.getSession(false);    if (sessao != null) {		/** to be sure that execution course list is in session */		SessionUtils.getExecutionCourses(request);        ArrayList tiposAula = new ArrayList();        tiposAula.add(new LabelValueBean("escolher", ""));        tiposAula.add(new LabelValueBean("Teorica", (new Integer(TipoAula.TEORICA)).toString() ));        tiposAula.add(new LabelValueBean("Pratica", (new Integer(TipoAula.PRATICA)).toString() ));        tiposAula.add(new LabelValueBean("Teorico-Pratica", (new Integer(TipoAula.TEORICO_PRATICA)).toString() ));        tiposAula.add(new LabelValueBean("Laboratorial", (new Integer(TipoAula.LABORATORIAL)).toString() ));        tiposAula.add(new LabelValueBean("Duvidas", (new Integer(TipoAula.DUVIDAS)).toString() ));        tiposAula.add(new LabelValueBean("Reserva", (new Integer(TipoAula.RESERVA)).toString() ));        sessao.setAttribute("tiposAula", tiposAula);      return mapping.findForward("Sucesso");    } else      throw new Exception();  // nao ocorre... pedido passa pelo filtro Autorizacao   }