Example URL passed in as systemId: http://localhost:8080/facet/?wsdl&resource=CommonHeaderV3_3.xsd When the entityResolver tries to resolve this using the class loader, it asks the classloader for "", which returns the working directory of the java process. It should return null. We could make it work if we changed the code (JBossEntityResolver, line 550): if(path.length() == 0) return null; to this: if(filename.length() == 0) return null;