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https://issues.apache.org/jira/browse/AXIS2-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean-Philippe HAUTIN updated AXIS2-3947:
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Attachment: WebServicesEJB.zip
> EJB provider run only once
> --------------------------
>
> Key: AXIS2-3947
> URL: https://issues.apache.org/jira/browse/AXIS2-3947
> Project: Axis 2.0 (Axis2)
> Issue Type: Bug
> Components: rpc
> Affects Versions: 1.4, 1.3
> Environment: Weblogic 10.0MP1 (10.0.1.0)
> JDK 1.5.0_15-b04
> Windows XP SP2, Solaris 10
> Reporter: Jean-Philippe HAUTIN
> Priority: Blocker
> Attachments: ejbModuleWebServices.zip, WebServicesEJB.zip
>
>
> I made a simple web service towards an EJB using Axis2 1.3, following the
> tutorial at this URL http://ws.apache.org/axis2/1_2/ejb-provider.html
> It works fine once (the first run) but when I try to run it a second time in
> a row, I have this response in SOAP UI
>
> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";>
> <soapenv:Body>
> <soapenv:Fault>
> <faultcode>soapenv:Server</faultcode>
> <faultstring>object is not an instance of declaring
> class</faultstring>
> <detail>
> <Exception>org.apache.axis2.AxisFault: object is not an instance
> of declaring class
> at org.apache.axis2.AxisFault.makeFault(AxisFault.java:417)
> at
> org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:156)
> at
> org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
> at
> org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:96)
> at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:145)
> at
> org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
> at
> org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:120)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at
> weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:226)
> at
> weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:124)
> at
> weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
> at
> weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
> at
> weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3370)
> at
> weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
> at weblogic.security.service.SecurityManager.runAs(Unknown Source)
> at
> weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2117)
> at
> weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2023)
> at
> weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1359)
> at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)
> at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)
> Caused by: java.lang.IllegalArgumentException: object is not an instance of
> declaring class
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:194)
> at
> org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:98)
> ... 19 more</Exception>
> </detail>
> </soapenv:Fault>
> </soapenv:Body>
> </soapenv:Envelope>
> I investigated a bit. I found out a problem within the « caching system »
> used to prevent introspection to resolve which Java method/class to call.
> Here is a simple of
> org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic() :
> Object obj = getTheImplementationObject(inMessage);
> Class ImplClass = obj.getClass();
> AxisOperation op =
> inMessage.getOperationContext().getAxisOperation();
> method = (Method)(op.getParameterValue("myMethod"));
> AxisService service = inMessage.getAxisService();
> OMElement methodElement =
> inMessage.getEnvelope().getBody().getFirstElement();
> AxisMessage inAxisMessage =
> op.getMessage(WSDLConstants.MESSAGE_LABEL_IN_VALUE);
> String messageNameSpace = null;
> if (method == null) {
> String methodName = op.getName().getLocalPart();
> Method[] methods = ImplClass.getMethods();
> for (int i = 0; i < methods.length; i++) {
> if (methods[i].getName().equals(methodName)) {
> method = methods[i];
> op.addParameter("myMethod", method);
> break;
> }
> }
> if (method == null) {
> throw new AxisFault("No such method '" + methodName +
> "' in class " + ImplClass.getName());
> }
> }
> The first time, everything is fine, "obj" is new, "method" is null and is
> fill correctly with loop made of ImplClass.getMethods();. During the second
> call, "obj" is a new instance but "method" comes from "op" and is the one
> from the previous call. But it doesn't match "obj". "method" is related to
> the previous instance of "obj" instanciated from the previous call. It seems
> that the saving of "obj" in the ServiceContext class didn't work properly.
> The quick fix is to comment the line method =
> (Method)(op.getParameterValue("myMethod")); but that implies to launch the
> introspection framework at every call. It may be time consuming.
> I tested it with Axis2 1.3 and 1.4 too and it doesn't work any better
> I make a unit Test Eclipse workspaces with 2 projects :
> - project "ejbModuleWebService" is the project with a very simple EJB,
> - project WebServiceEJB contains the web service definition.
> We have the bug on Weblogic 10, I didn't test it on another application
> server.
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