I understand that you deploy in a websphere.
Is there a wsdl4j-1.6.2.jar packaged in your war / ear?
Could be another provider for the service javax.wsdl.factory.WSDLFactory, some other jar that have the service in the websphere classpath, packaged in your war/ear?
The reader comes from an WSDLFactory that does the lookup
1. Is there a service named javax.wsdl.factory.WSDLFactory under /META-INF/services in any jar in the classpath
2. Is there a system property named javax.wsdl.factory.WSDLFactory
3. Is there a properties file at JAVA_HOME with a key javax.wsdl.factory.WSDLFactory
4. If not found instantiate the factory com.ibm.wsdl.factory.WSDLFactoryImpl that is already packaged inside wsdl4j-1.6.2.jar (at last in my distribution)