Java.lang.NullPointerException + Web Clipping Portlet

Question

Hi,
I have created one external application connection and one Oracle-PDK producer connection referring to that external application.Then I dragged that web clipping portlet into a Webcenter application.
After running jspx file,it raises an error 'Portlet Consume Error'.
In Jdeveloper the error log is as follows::
<ServletLogger> <severe> ERROR: Unhandled exception in SOAP call
java.lang.NullPointerException
     at oracle.portal.wcs.session.http.HttpClientTransportSessionContext.login(HttpClientTransportSessionContext.java:308)
     at oracle.portal.wcs.common.WcExternalPrincipal.login(WcExternalPrincipal.java:322)
     at oracle.portal.wcs.provider.ProviderUserTransportSessionContextManager.handleExternalPrincipal(ProviderUserTransportSessionContextManager.java:91)
     at oracle.portal.wcs.provider.WcProviderInstance.initSession(WcProviderInstance.java:183)
     at oracle.webdb.provider.v2.adapter.soapV1.ProviderAdapter.initSession(Unknown Source)
     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:597)
     at oracle.webdb.provider.v2.utils.soap.SOAPProcessor.doMethodCall(Unknown Source)
     at oracle.webdb.provider.v2.utils.soap.SOAPProcessor.handleRequest(Unknown Source)
     at oracle.webdb.provider.v2.adapter.SOAPServlet.doSOAPCall(Unknown Source)
     at oracle.webdb.provider.v2.adapter.SOAPServlet.service(Unknown Source)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:111)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
     at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:176)
Please help.It is very urgent!!!!!!!!!!!

Answer 1

Hi
Are you useing NWDS(CE 7.1) then you have use this sort of code to  bind it
Model1 model1Model = new Model1();
    Bapi_Flight_Getlist_Input bapi_Flight_Getlist_Input = new Bapi_Flight_Getlist_Input(model1Model);
    Bapi_Flight_Getlist_Output output = new Bapi_Flight_Getlist_Output(model1Model);
    java.util.List<Bapisfldat> flight_List = new ArrayList<Bapisfldat>();
    output.setFlight_List(flight_List);
    wdContext.nodeBapi_Flight_Getlist_Input().bind(bapi_Flight_Getlist_Input);
and if you are using NWD 7.0 then the binding will be differ use below sample code to bind it.
Bapi_Flight_Getlist_Input input = new Bapi_Flight_Getlist_Input();
     input.setDestination_From(new Bapisfldst());
     input.setDestination_To( new Bapisfldst());
     wdContext.nodeBapi_Flight_Getlist_Input().bind(input);
PS: Also check the cardinality  should be 1..n not 0:n.
Thanks