Failed to invoke end componentFailed to invoke method error

Question

I am getting this error while invoking a web service in weblogic.
What is root cause of this error...?
Error Description:-
<remoteFault xmlns="http://schemas.oracle.com/bpel/extension">
-<part name="code">
<code>Server
</code>
</part>
-<part name="summary">
<summary>Failed to invoke end componentFailed to invoke method
</summary>
</part>
-<part name="detail">
<detail>
<detail><bea_fault:stacktrace xmlns:bea_fault="http://www.bea.com/servers/wls70/webservice/fault/1.0.0"
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"/>java.lang.NullPointerException
     at org.tcs.billingeai.ws.allocateBillCycle.AllocateBillCycle.allocateBillcycle(Unknown Source)
     at org.tcs.billingeai.ws.allocateBillCycle.BillCycleService.invokeAllocateBillCycle(Unknown Source)
     at sun.reflect.GeneratedMethodAccessor496.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at weblogic.wsee.component.pojo.JavaClassComponent.invoke(JavaClassComponent.java:91)
     at weblogic.wsee.ws.dispatch.server.ComponentHandler.handleRequest(ComponentHandler.java:68)
     at weblogic.wsee.handler.HandlerIterator.handleRequest(HandlerIterator.java:127)
     at weblogic.wsee.ws.dispatch.server.ServerDispatcher.dispatch(ServerDispatcher.java:84)
     at weblogic.wsee.ws.WsSkel.invoke(WsSkel.java:60)
     at weblogic.wsee.server.servlet.SoapProcessor.handlePost(SoapProcessor.java:66)
     at weblogic.wsee.server.servlet.SoapProcessor.process(SoapProcessor.java:44)
     at weblogic.wsee.server.servlet.BaseWSServlet$AuthorizedInvoke.run(BaseWSServlet.java:124)
     at weblogic.wsee.server.servlet.BaseWSServlet.service(BaseWSServlet.java:53)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:165)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3153)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1973)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1880)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1310)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
</detail>
</detail>
</part>
</remoteFault>
</fault
Edited by: 911694 on Jun 25, 2012 1:02 PM

Answer 1

This is a very convinient feature of Weblogic startup service - if your class
does not implement T3StartupDef it will look for (using introspection)
public static void main(String[] args) in your startup class, and, if it is
there it will execute it.
Ricky Wong <[email protected]> wrote:
It works, many thanks !
However I still have one more question out of my head - I found that my
startup class doesn't need to implement the T3StartupDef and it still
works, however my shutdown class must implement the T3ShutdownDef
(otherwise I'll get ClassCastException).
In article <[email protected]>, [email protected] says...
Most likely the HubDevicePool does not have a public default constructor.
Ricky Wong <[email protected]> wrote:
In what situation I'll get the error "Failed to invoke startup/shutdown
class" as below :
java.lang.InstantiationException:
dsb/eBanking/backOffice/connect/HubDevicePool
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Compiled Code)
at weblogic.t3.srvr.StartupThread.runStartup
(StartupThread.java:180)
at weblogic.t3.srvr.StartupThread.doWork(Compiled Code)
at weblogic.t3.srvr.PropertyExecuteThread.run
(PropertyExecuteThread.java:62)
I'm pretty sure that the class HubDevicePool has been coded (e.g.
implement T3xxxDef interface, with either the startup() or shutdown()
method) properly as I've another startup classes which work perfectly.
The class has been compiled without error, but it just cannot run when I
put it as either a startup or shutdown class for WebLogic.Dimitri
Dimitri