configuration file boss-app.xml
<?xml version="1.0" encoding="UTF-8"?>
<jboss-app>
<loader-repository>
apache.cxf:loader=webService.war
<loader-repository-config>
java2ParentDelegation=false
</loader-repository-config>
</loader-repository>
</jboss-app>
from the page http://cxf.apache.org/docs/application-server-specific-configuration-guide.html#ApplicationServerSpecificConfigurationGuide-JBoss