Hi again,
I've been experimenting using RPCServiceClient above and find that I can
successfully invoke the service from a Java application, but not from
within a Tomcat webapp.
It doesn't like that I pass a filled Object array containing the
webservice method arguments. Like so:
*
// ------------ Code --------------------
Object[] operationArguments = new Object[] { "userName", "userCode" };
Object[] response = serviceClient.invokeBlocking( opTestService,
operationArguments, returnTypes );
// ------------- End Code -------------- *
However I can pass an empty Object array without problem ( Object[]
operationArguments = new Object[] { }; ).
Are there any know issues invoking a service in this way?
Here is us the full error trace:
// ------------ Code --------------------
java.lang.NullPointerException
at
com.ctc.wstx.sw.BaseNsStreamWriter.doWriteDefaultNs(BaseNsStreamWriter.java:528)
at
com.ctc.wstx.sw.SimpleNsStreamWriter.writeDefaultNamespace(SimpleNsStreamWriter.java:111)
at
com.ctc.wstx.sw.SimpleNsStreamWriter.writeNamespace(SimpleNsStreamWriter.java:119)
at
org.apache.axiom.om.impl.MTOMXMLStreamWriter.writeNamespace(MTOMXMLStreamWriter.java:146)
at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeStartpart(OMSerializerUtil.java:329)
at
org.apache.axiom.om.impl.util.OMSerializerUtil.serializeStartpart(OMSerializerUtil.java:171)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:804)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:837)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:808)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:837)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:808)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:837)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerialize(OMElementImpl.java:808)
at
org.apache.axiom.soap.impl.llom.SOAPEnvelopeImpl.internalSerialize(SOAPEnvelopeImpl.java:179)
at
org.apache.axiom.om.impl.llom.OMElementImpl.internalSerializeAndConsume(OMElementImpl.java:837)
at
org.apache.axiom.om.impl.llom.OMNodeImpl.serializeAndConsume(OMNodeImpl.java:417)
at
org.apache.axis2.transport.http.SOAPOverHTTPSender$AxisSOAPRequestEntity.handleOMOutput(SOAPOverHTTPSender.java:190)
at
org.apache.axis2.transport.http.SOAPOverHTTPSender$AxisSOAPRequestEntity.writeRequest(SOAPOverHTTPSender.java:232)
at
org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:495)
at
org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:1973)
at
org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:993)
at
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:397)
at
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
at
org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod(AbstractHTTPSender.java:541)
at
org.apache.axis2.transport.http.SOAPOverHTTPSender.send(SOAPOverHTTPSender.java:119)
at
org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:335)
at
org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:204)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:674)
at
org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:237)
at
org.apache.axis2.description.OutInAxisOperationClient.execute(OutInAxisOperation.java:202)
at
org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:579)
at
org.apache.axis2.client.ServiceClient.sendReceive(ServiceClient.java:508)
at
org.apache.axis2.rpc.client.RPCServiceClient.invokeBlocking(RPCServiceClient.java:95)
// ------------- End Code --------------
Regards,
Alan Sunley.
Deepal Jayasinghe wrote:
Hi Alan ,
I hope you will get a Rampart release soon.
Thanks
Deepal
Hi folks,
I was able to successfully deploy and consume a POJO-based webservice
by closely following the POJO guide on the Axis2-1.2 site. However I
need to include a username/password token in each message, therefore I
need to use Rampart. Unfortunately the current version of Rampart
(1.1) doesn't appear to be compatible with Axis2-1.2, so I have to
roll back to Axis2-1.1.1, and it is here that I have run into a host
of problems.
Firstly I don't seem to be able to access the service at all using the
same RPCServiceClient call (as I was able to with version 1.2):
// ------------ Code --------------------
RPCServiceClient serviceClient = new RPCServiceClient();
Options options = serviceClient.getOptions();
EndpointReference targetEPR = new
EndpointReference("http://localhost:8085/axis2/services/LPService";);
options.setTo(targetEPR);
QName opName = new
QName("http://services.example.com/xsd";, "getVendors");
Object[] opGetVendorsArgs = new Object[] { "_null" };
Class[] returnTypes = new Class[] {
com.example.schema.Vendor[].class };
Object[] response =
serviceClient.invokeBlocking(opGetVendorsr, opGetVendrosArgs,
returnTypes);
com.example.schema.Vendor[] result =
(com.example.schema.Vendor[]) response[0];
// ------------- End Code --------------
For this I receive the following error, before the request is sent to
the service:
java.lang.NullPointerException
at
com.ctc.wstx.sw.BaseNsStreamWriter.doWriteDefaultNs(BaseNsStreamWriter.java:528)
I have also tried invoking the service this way:
// ------------ Code --------------------
OMFactory factory = OMAbstractFactory.getOMFactory();
OMNamespace ns =
factory.createOMNamespace("http://services.example.com/xsd","ns1";);
OMElement elementToSend = factory.createOMElement("getVendors",
ns);
OMElement childElem = factory.createOMElement("param0", null);
childElem.setText("_null");
elem.addChild(childElem);
ServiceClient client = new ServiceClient();
Options options = new Options();
options.setAction("urn:echo");
options.setTo(new EndpointReference(endpointURL));
client.setOptions(options);
OMElement response = client.sendReceive(elementToSend); //
------------- End Code --------------
This approach hits me with the following error, although this error
occurs on the server side when constructing the response.
24-May-2007 21:05:04
org.apache.axis2.rpc.receivers.RPCMessageReceiver invokeBusinessLogic
SEVERE: Exception occurred while trying to invoke service method
getVendors
org.apache.axiom.om.OMException: java.lang.NullPointerException
at
org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:194)
at
org.apache.axiom.om.impl.llom.OMNodeImpl.build(OMNodeImpl.java:318)
at
org.apache.axiom.om.impl.llom.OMElementImpl.build(OMElementImpl.java:632)
at
org.apache.axiom.om.impl.llom.OMElementImpl.detach(OMElementImpl.java:599)
at
org.apache.axiom.om.impl.llom.OMNodeImpl.setParent(OMNodeImpl.java:117)
at
org.apache.axiom.om.impl.llom.OMElementImpl.addChild(OMElementImpl.java:249)
at
org.apache.axiom.om.impl.llom.OMElementImpl.addChild(OMElementImpl.java:202)
at
org.apache.axis2.rpc.receivers.RPCUtil.processResponse(RPCUtil.java:169)
at
org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic
...
Anyone have any ideas on what could be causing the above two issues?
Any help would be greatly appreciated.
Regards,
Alan Sunley.
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