ClassCastException: org.apache.xerces.parsers.XIncludeAwareParserConfiguration when packaging xerces in application in JBoss EAP 5.1.2 and 5.2.0

Issue

• Upgrading to JBoss EAP 5.1.2 or 5.2.0, one of our applications packages xerces.jar but does not package xalan.jar. It looks like the CXF we are packaging is using the xalan in JBoss which is using the xerces in JBoss instead of in our application and causes the ClassCastException below:

Caused by: java.lang.ClassCastException: org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast to org.apache.xerces.xni.parser.XMLParserConfiguration
    at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
    at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.<init>(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl.<init>(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
    at org.apache.xml.utils.XMLReaderManager.getXMLReader(XMLReaderManager.java:81)
    at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:437)
    at org.apache.cxf.interceptor.AbstractLoggingInterceptor.writePayload(AbstractLoggingInterceptor.java:113)
    at org.apache.cxf.interceptor.LoggingInInterceptor.logging(LoggingInInterceptor.java:140)
    ... 33 more