Invoking a web service with the WSDL URL given at run time

Question

I have created a very Simple Web Service using Netbeans 6.0 as an EJB Module. I have successfully created clients to access the web service, both through a Composite Application and through a simple Java Desktop Application, using the create "New Web Service Client" option, either by pointing to the EJB project either by providing the WSDL URL.
What I want now, is for the Java Desktop application to be able to consume the service after it has discovered the WSDL URL at runtime (e.g. through UDDI).
From what I have been able to find on the web, I should use the javax.xml.ws.Service class. But when I attempt to use the getPort method I get the exception:
"com.sun.xml.ws.model.RuntimeModelerException: runtime modeler error: Wrapper class mypackagename.jaxws.MyWebServiceName is not found. Have you run APT to generate them?"
Since I know that this class is not needed for the Web Service to be accessed, when the two procedures I describe above are used, I wonder what I can do to get this to work.
I have tried using apt from the command line but it can't find Java EE classes, so it doesn't work.
Nikos

Answer 1

Hi Yarecki,
I'm afraid I'm also a newbie, and I'm feeling my way around things.
I have written some code. However, you should be warned that... it doesn't work!
        String wsdlLocation;//=...some URL...
        String input;//=...XML...either SOAP message either SOAP payload
     try{
         java.net.URL wsdlURL = new java.net.URL(wsdlLocation);
            //these should be extracted from the service WSDL document
            java.lang.String serviceName = "CalculationServiceService";
            java.lang.String portName = "CalculationServicePort";
            String namespace = "http://localhost:8080/CalculationServiceService";
            javax.xml.transform.Source inputSource = new javax.xml.transform.stream.StreamSource(new java.io.StringReader(input));
            javax.xml.namespace.QName serviceQName = new javax.xml.namespace.QName(namespace, serviceName);
            javax.xml.namespace.QName portQName = new javax.xml.namespace.QName(namespace, portName);
            javax.xml.ws.Service service = javax.xml.ws.Service.create(wsdlURL, serviceQName);           
            javax.xml.ws.Dispatch<javax.xml.transform.Source> dispatch =
                  service.createDispatch(portQName, javax.xml.transform.Source.class, javax.xml.ws.Service.Mode.MESSAGE);
       //javax.xml.ws.Dispatch<javax.xml.transform.Source> dispatch =
           //service.createDispatch(portQName, javax.xml.transform.Source.class, javax.xml.ws.Service.Mode.PAYLOAD);
//alternative method, with different input
            javax.xml.transform.Source replySource = dispatch.invoke(inputSource);
            javax.xml.bind.JAXBContext jc = javax.xml.bind.JAXBContext.newInstance(nikos.test.CalculationResult.class);
            javax.xml.bind.Unmarshaller unm = jc.createUnmarshaller();
            nikos.test.CalculationResult result = (nikos.test.CalculationResult)unm.unmarshal(replySource);
            System.out.println(result.getResult());
        } catch (JAXBException ex) {
            JOptionPane.showMessageDialog(this, ex);
            ex.printStackTrace();
        } catch (MalformedURLException ex) {
            ex.printStackTrace();//this should not happen.
        }In fact I'm getting a weird error
javax.xml.ws.soap.SOAPFaultException: java.lang.NullPointerException
        at com.sun.xml.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:187)
        at com.sun.xml.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:108)
        at com.sun.xml.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:187)
        at com.sun.xml.ws.client.dispatch.DispatchImpl.invoke(DispatchImpl.java:206)
     //lines from my source code are here
Caused by: javax.xml.ws.WebServiceException: java.lang.NullPointerException
        at com.sun.enterprise.security.jmac.config.PipeHelper.makeFaultResponse(PipeHelper.java:328)
        at com.sun.enterprise.security.jmac.config.PipeHelper.getFaultResponse(PipeHelper.java:366)
        at com.sun.enterprise.webservice.CommonServerSecurityPipe.processRequest(CommonServerSecurityPipe.java:223)
        at com.sun.enterprise.webservice.CommonServerSecurityPipe.process(CommonServerSecurityPipe.java:129)
        at com.sun.xml.ws.api.pipe.helper.PipeAdapter.processRequest(PipeAdapter.java:115)
        at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:595)
        at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:554)
        at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:539)
        at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:436)
        at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:243)
        at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:444)
        at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:244)
        at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:135)
        at com.sun.enterprise.webservice.Ejb3MessageDispatcher.handlePost(Ejb3MessageDispatcher.java:113)
        at com.sun.enterprise.webservice.Ejb3MessageDispatcher.invoke(Ejb3MessageDispatcher.java:87)
        at com.sun.enterprise.webservice.EjbWebServiceServlet.dispatchToEjbEndpoint(EjbWebServiceServlet.java:200)
        at com.sun.enterprise.webservice.EjbWebServiceServlet.service(EjbWebServiceServlet.java:129)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
        at com.sun.enterprise.web.AdHocContextValve.invoke(AdHocContextValve.java:114)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:87)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:270)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:339)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:261)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:212)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
        at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
Caused by: java.lang.NullPointerException
        at com.sun.xml.ws.tx.service.TxServerPipe.process(TxServerPipe.java:163)
        at com.sun.enterprise.webservice.CommonServerSecurityPipe.processRequest(CommonServerSecurityPipe.java:218)
        ... 39 moreAs I've said before I've called this web service successfully using three different methods.
It appears it has something to do with security issues, but I've no security at all...