Failed loading disp class "HSIService". Exception java.lang.ClassCastExcep

Question

<Failed loading disp class "HSIService". Exception java.lang.ClassCastExcep
Posted: 12 Aug 2004 13:36 PM Reply
I am receiving the following error in most all of the logs when trying to run/test this web service. The service worked fine a day ago, then this happened. I finally rebuilt it entirely in workshop, it ran a couple of times between changes and then started producing this error again. The workshop test browser either states "DispMessage is null" on the test form or if the form appears then it says "get" is not supported for the operation .... and maybe other weird stuff.
Can you give me an idea of where to specifically look for the problem?? Complete error message is below:
####<Aug 12, 2004 3:40:16 PM EDT> <Error> <WLW> <KLRAY8Z> <cgServer>
<ExecuteThread: '14' for queue: 'weblogic.kernel.Default'> <<anonymous>> <>
<Failed loading disp class "HSIService". Exception java.lang.ClassCastException at
com.bea.wlw.runtime.core.dispatcher.TypeUtils.validate(TypeUtils.java:1130)
at com.bea.wlw.runtime.jws.dispatcher.JwsDispClass.<init>(JwsDispClass.java:398)
at com.bea.wlw.runtime.jws.dispatcher.JwsDispFile.createPrimaryDispClass(JwsDispFile.java:52)
at com.bea.wlw.runtime.core.dispatcher.DispFile.<init>(DispFile.java:162)
at com.bea.wlw.runtime.jws.dispatcher.JwsDispFile.<init>(JwsDispFile.java:44)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:274)
at com.bea.wlw.runtime.core.dispatcher.DispUnit.loadDispFile(DispUnit.java:219)
at com.bea.wlw.runtime.core.dispatcher.DispUnit.<init>(DispUnit.java:153)
at com.bea.wlw.runtime.core.dispatcher.DispCache.ensureDispUnit(DispCache.java:553)
at com.bea.wlw.runtime.core.dispatcher.HttpServerHelper.getDispUnit(HttpServerHelper.java:491)
at com.bea.wlw.runtime.core.dispatcher.HttpServerHelper.executeGetRequest(HttpServerHelper.java:531)
at com.bea.wlw.runtime.core.dispatcher.HttpServer.doGet(HttpServer.java:81)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6354)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
>
--------------------------------------------------------

Answer 1

FYI - solved this problem. The problem was that I had set a callback handler as an operation like so:
* @common:operation
* @common:message-buffer enable="true"
* @jws:conversation phase="finish"
public void mycontrol_mycallbackhandler()
Apparently callback handler's can not be operations.