calling a web service from the standlone client

[mandarjboss]

I am trying to access a web service deployed on JBoss thtough a statndalone client.
The web service is deployed sucessfully as I can see the web service in JBoss's web service console(jbossws).
But when i execute the following code :

public static void main(String[] args) {
 try {
 String nameSpaceURL = "http://webservice.test.com/";
 String webServiceURL = "http://127.0.0.1:4040/MySessionBeanService/MySessionBean?wsdl";
 URL wsdlLocation = new URL(webServiceURL);
 QName serviceQ = new QName(nameSpaceURL,"testService");
 Service service = Service.create(wsdlLocation,serviceQ);
 MySession mysession = service.getPort(MySession.class);
 mysession.sayHello();
 } catch (MalformedURLException e) {
 e.printStackTrace();
 }
}

I get a very strange exception with the stack trace as follows :

Exception in thread "main" java.lang.NoSuchMethodError: javassist.ClassPool.<init>(Z)V
 at org.jboss.ws.core.jaxws.DynamicWrapperGenerator.init(DynamicWrapperGenerator.java:71)
 at org.jboss.ws.core.jaxws.DynamicWrapperGenerator.<init>(DynamicWrapperGenerator.java:66)
 at org.jboss.ws.metadata.builder.jaxws.JAXWSMetaDataBuilder.initWrapperGenerator(JAXWSMetaDataBuilder.java:856)
 at org.jboss.ws.metadata.builder.jaxws.JAXWSMetaDataBuilder.resetMetaDataBuilder(JAXWSMetaDataBuilder.java:862)
 at org.jboss.ws.metadata.builder.jaxws.JAXWSClientMetaDataBuilder.rebuildEndpointMetaData(JAXWSClientMetaDataBuilder.java:258)
 at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPortInternal(ServiceDelegateImpl.java:274)
 at org.jboss.ws.core.jaxws.spi.ServiceDelegateImpl.getPort(ServiceDelegateImpl.java:263)
 at javax.xml.ws.Service.getPort(Service.java:185)
 at org.jboss.ws.core.jaxws.client.ServiceExt.getPort(ServiceExt.java:123)
 at sample.WebServiceClient.main(WebServiceClient.java:23)

I also get a Log4j warning as,

log4j:WARN No appenders could be found for logger (org.jboss.ws.metadata.builder.jaxws.JAXWSWebServiceMetaDataBuilder).
log4j:WARN Please initialize the log4j system properly.

But I don't think that this warning can lead to such a weird error.

I have following jars from jboss.home/client/lib on classpath :

jaxb-xjc.jar
stax-api-1.0.jar
sjsxp.jar
jaxb-api.jar
jaxb-impl.jar
activation.jar
jboss-jaxws.jar
jboss-saaj.jar
jbossws-client.jar
jboss-xml-bindig.jar
stax-api.jar
xercesImpl.jar
mail.jar

Can anyone help me to solve the problem?

[yalnifj]

You also need to add the jboss.home/client/javassist.jar to the classpath.