Got java.lang.IllegalStateException: IOException: "utf-8"

Question

Can someone please help me with this? I got a java.lang.IllegalStateException: IOException: "utf-8" error when calling web service. The exception is like the following:
javax.xml.ws.soap.SOAPFaultException: java.lang.IllegalStateException: IOException: "utf-8"
at com.sun.xml.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:196)
at com.sun.xml.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:122)
at com.sun.xml.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:196)
at com.sun.xml.ws.client.dispatch.DispatchImpl.invoke(DispatchImpl.java:215)
at oracle.sysman.connector.common.ConnectorServiceSoapWrapper.sendRequestBase(ConnectorServiceSoapWrapper.java:202)
ConnectorServiceSoapWrapper is my class and in sendRequestBase() method I had the following statement to invoke the web service.
Dispatch<SOAPMessage> dispatch = service.createDispatch(null, SOAPMessage.class, Service.Mode.MESSAGE);
SOAPMessage responseMsg = dispatch.invoke(msg);
dispatch object is an instance of javax.xml.ws.Dispatch and service is an instance of javax.xml.ws.Service. It looks like the error is thrown out before the web service is called. Does anyone have any idea what's happening here?
My java version is
java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Server VM (build 14.0-b16, mixed mode)
Thanks!

Answer 1

I was reading the source code of com.sun.xml.ws.client.dispatch.DispatchImpl
http://www.docjar.com/html/api/com/sun/xml/ws/client/dispatch/DispatchImpl.java.html
And the following piece of the code is part of the stack trace.
+195 } catch(Throwable e){+
+196 // it could be a RuntimeException resulting due to some internal bug or+
+197 // its some other exception resulting from user error, wrap it in+
+198 // WebServiceException+
+199 throw new WebServiceException(e);+
+200 }+
Anyone has any hint? Thanks!