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Posted to java-user@axis.apache.org by Alan Sunley <al...@ntlworld.com> on 2007/05/25 02:22:42 UTC
Problem consuming POJO-based Webservice with Axis2-1.1.1
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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Re: Problem consuming POJO-based Webservice with Axis2-1.1.1
Posted by Alan Sunley <al...@ntlworld.com>.
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.
>>
>>
>>
>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
>> For additional commands, e-mail: axis-user-help@ws.apache.org
>>
>>
>>
>>
>
>
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To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
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Re: Problem consuming POJO-based Webservice with Axis2-1.1.1
Posted by Deepal Jayasinghe <de...@opensource.lk>.
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.
>
>
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: axis-user-unsubscribe@ws.apache.org
> For additional commands, e-mail: axis-user-help@ws.apache.org
>
>
>
--
Thanks,
Deepal
................................................................
"The highest tower is built one brick at a time"
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