Hello everyone, and thanks in advance for your help.
I'm developing a client to consume a web service. I used WSDL2Java
(axis1-4) to produce stub classes and everything works great - I
successfully process the service. However, I'm required to store the actual
request/response documents with the transaction, and this is where I've run
into trouble.
The only way I could figure out how to do this properly was to modify the
generated service stub.
I added:
public void setClientHandlers(org.apache.axis.Handler requestHandler,
org.apache.axis.Handler responseHandler) {
this.requestHandler = requestHandler;
this.responseHandler = responseHandler;
}
And modified the webservice method stub as follows:
org.apache.axis.client.Call _call = createCall(); //Added these lines...
if (requestHandler != null && responseHandler != null)
_call.setClientHandlers(requestHandler, responseHandler); //end add
_call.setOperation(_operations[0]);
try {
java.lang.Object _resp = _call.invoke(new java.lang.Object[]
{parameters});
I created the following classes:
public class MyRequestHandler extends
org.apache.axis.handlers.LogHandler {
public void invoke(org.apache.axis.MessageContext
msgContext) throws org.apache.axis.AxisFault {
try {
SOAPMessageContext smc =
(SOAPMessageContext)msgContext;
SOAPMessage msg = smc.getMessage();
System.out.println("request:");
msg.writeTo(System.out);
}
catch (Exception e) {
e.printStackTrace();
throw new
org.apache.axis.AxisFault(e.getMessage());
}
}
}
//super.invoke(msgContext);
public class MyResponseHandler extends
org.apache.axis.handlers.LogHandler {
public void invoke(org.apache.axis.MessageContext
msgContext) throws org.apache.axis.AxisFault {
try {
SOAPMessageContext smc =
(SOAPMessageContext)msgContext;
SOAPMessage msg = smc.getMessage();
System.out.println("response:");
msg.writeTo(System.out);
}
catch (Exception e) {
e.printStackTrace();
throw new
org.apache.axis.AxisFault(e.getMessage());
}
}
}
And then set the handlers from the client code. With this code in place, I
get the following exception:
org.xml.sax.SAXException: SimpleDeserializer encountered a child element,
which is NOT expected, in something it was trying to deserialize.
at
org.apache.axis.encoding.ser.SimpleDeserializer.onStartChild(SimpleDeseriali
zer.java:145)
at
org.apache.axis.encoding.DeserializationContext.startElement(Deserialization
Context.java:1035)
at
org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:165)
at
org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java:
1141)
at
org.apache.axis.message.RPCElement.deserialize(RPCElement.java:236)
at org.apache.axis.message.RPCElement.getParams(RPCElement.java:384)
at org.apache.axis.client.Call.invoke(Call.java:2467)
at org.apache.axis.client.Call.invoke(Call.java:2366)
at org.apache.axis.client.Call.invoke(Call.java:1812)...
I've experimented with different version of handler classes (which are run
by the way - I access the request and response), and even tried setting the
handler explicitly to null (in the stub class). The bottom line: if I have
the Call.setClientHandlers(handler, handler) in place, the exception is
returned. Obviously I'm screwing something up, but not sure what.
I did, but the way, consider setting handlers the more conventional way
(handler chain from the client code), but this method only allows me to
specify a class, not an instance, so I loose all context (which I need to be
able to store the request/response along with the other transactional
information).
Please let me know if more information is needed.
Michael Lee
