Ok. I don't have time for this. Check your project to make sure that there are no outdated libraries present in your application archive (a .war, I presume). So, have a look in the exploded war, in the WEB-INF/lib directory, and see if there are any outdated jars (xwork jar, ognl jar, ...) because there's a transitive dependency somewhere, or because the build was not cleaned correctly.
If that is not the case, check your classpath - JBoss is famous for this - to make sure there's no outdated jar living somewhere else and being included by accident.
You can try the war in another application server (I suggest Tomcat). If that still does not work, then please do post a list of the jars included, and we'll have another look).