When I start Tomcat I get the following error:
Jun 10, 2010 5:17:25 PM org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
Jun 10, 2010
I got the same issue, unable to start the application once it is deployed in tomcat. But, once I copy the Struts set of jars into CATALINA_HOME\lib (Tomcat dir) directory it is resolved. You don't need to have these jars in your WEB_INF\lib but you need to have them in your Build Path.
commons-fileupload-1.2.1.jar
commons-io-1.3.2.jar
freemarker-2.3.16.jar
javassist-3.11.0.GA.jar
struts2-convention-plugin-2.2.1.jar
struts2-core-2.2.1.jar
xwork-core-2.2.1.jar