I wrote this simple application to demostrate login/logout.
/Login.jsp
/pages/welcome.jsp
/WEB-INF/inc/loginCheck.jsp
<%@ taglib="/webwork" prefix="ww" %>
<ww:if test="#session.login != 'true'">
<jsp:forward page="<%= request.getContextPath() %>/login.jsp" />
</ww:if>
simple.LoginAction.java
simple.LogoutAction.java
/WEB-INF/classes/xwork.xml