<% System.out.println("check"); if(session.isNew()){ session.invalidate(); response.sendRedirect("/gmms/login/index.jsp"); } else{ String name= (String)session.getAttribute("userName"); if(name==null){ session.invalidate(); response.sendRedirect("/gmms/login/index.jsp"); } else{ String s= request.getParameter("_out"); if(s!=null){ session.invalidate(); response.sendRedirect("/gmms/login/index.jsp"); } } } %>