I created a hello-world.war from the struts-examples-master.zip from https://github.com/apache/struts-examples.
Clicking the 'Hello World' link got the url: http://localhost:8080/hello-world/hello.action;jsessionid=8EEA47306A76BAE87F665C6090D518E3 which display: HTTP Status 500 - Filter execution threw an exception type Exception report message Filter execution threw an exception description The server encountered an internal error that prevented it from fulfilling this request. exception javax.servlet.ServletException: Filter execution threw an exception root cause java.lang.NoSuchMethodError: org.apache.commons.lang3.reflect.MethodUtils.getAnnotation(Ljava/lang/reflect/Method;Ljava/lang/Class;ZZ)Ljava/lang/annotation/Annotation; org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:47) ... org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:143) note The full stack trace of the root cause is available in the Apache Tomcat (TomEE)/8.5.11 (7.0.3) logs. Apache Tomcat (TomEE)/8.5.11 (7.0.3) Therefore the war file has a dependency to struts 2.5.12 which has (not optional) dependency to commons lang3 3.6. The war file directory structure is: hello-world/WEB-INF/lib/commons-lang3-3.6.jar I add following line to catalina.sh: set "JAVA_OPTS=-XX:+TraceClassLoading -XX:+TraceClassUnloading" then do: catalina.sh run > my_tomcat.log 2>&1 then finally search my_tomcat.log for MethodUtils my_tomcat.log has this line: [Loaded org.apache.commons.lang3.reflect.MethodUtils from file:/home/alkao/tomee/apache-tomee-plus-7.0.3/lib/commons-lang3-3.5.jar] i.e. tomee 7.0.3 loads commons-lang3-3.5.jar. How to load commons-lang3-3.6.jar from web-inf/lib of a war file using tomee 7.0.3?
