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JDeveloper WebService implementation
Hello,
I have encountered a serious problem in using ADF BC Application Module with custom made WebService.
I am hoping that i missed something, and that someone can help me or point me in right direction.
My problem occured when I could not expose methods with complex types as WebServices from Application Module,
So i have used custom class and get myself instance of Application Module, invoked methods and everything worked fine
I was getting instance using this way:
| ADFContext ac = ADFContext.initADFContext(null, null, null, null); | |
| AppModuleImpl am = (AppModuleImpl)Configuration.createRootApplicationModule("model.AppModuleImpl ", "AppModuleImplLocal"); |
When running from main method in some class everything works great.
Problem is when i make that class WebService provider, then my methods try to get Application Module instance and get ::
ns0:Server
java.lang.NoClassDefFoundError: oracle/jbo/client/Configuration
I am really not sure what could be the issue, is there something which should be done on WebLogic (tried both on integrated and dedicated)
Or there is some other way to get Application Module instance.
both 12.2.1 versions of JDeveloper have exact the same problem
Best Answer
-
Solved the issue by adding all needed libraries to WAR.
Obviously there was a problem with some sorf of conflict but CAT did not found anything, and its hard to understand why problem occurs in first place.
Answers
-
Timo Hahn Senior Principal Technical Consultant - Oracle ACE Director Member, Moderator Posts: 37,673 Red DiamondUser, the NoClassDefFoundError exception points to a class loader problem. Sometimes the problem is static code in a bean or it's the order of libraries loaded from your application and the server you are deploying to.
You can check https://examples.javacodegeeks.com/java-basics/exceptions/java-lang-noclassdeffounderror-how-to-solve-no-class-def-found… and https://www.youtube.com/watch?feature=player_detailpage&v=ArLTKapjV_8&app=desktop which helps you understand the problem.
Timo
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Hi Timo, thank you for fast response, and for the heads up for order of libraries.
I will watch through materials you provided and posted back.
What concerns me is that this problem occurs in the simplest kind o application as soon Configuration.createRootApplicationModule("model.AppModuleImpl ", "AppModuleImplLocal"); is invoked (no static or anything).
If i remember correctly in 11g i had no problems with this specific use case.
-
I ve looked through links, and ill look more into cat. problem is that this Configuration class is from oracle.jbo.client.Configuration package on which I don't have any control. I will see what results cat give, but whatever they were I am not sure how to solve them
I am posting this link also so, you can see what I was doing
http://flexagon.com/2013/08/create-soap-webservices-using-bc4j/
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I was trying to fix my problem from yesterday but with no success although i have some additional information. I am hoping that you can point me in right direction.
I checked with ClassLoader Analysis Tool and it did not found any class conflicts.
I was researching a bit more, and found out that when I run my Web Service Class from inside JDeveloper everything works fine. It deploys application to integrated weblogic and web service is available and fully functional.
If I try to pack it inside a War and regardless of deployment method (console, enterprise manager, jdeveloper) or server (integrated, dedicated )result is always the same - deploys OK, available via ws_utc, but when some method is invoked i get ::
<oracle.dms.instrument.Noun> <Noun> <findOrCreateByPath> <Attempt to create pre-existing noun /DefaultDomain/DefaultServer/com.oracle.webservices.wls.ws-testclient-app-wls, of type wls_jaxrsapp_resources, with a conflicting type wls_ear.>
<com.sun.xml.ws.server.sei.TieHandler> <TieHandler> <createResponse> <oracle/jbo/client/Configuration>
java.lang.NoClassDefFoundError: oracle/jbo/client/Configuration
at project1.WSClass.test(WSClass.java:32)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at weblogic.wsee.jaxws.WLSInstanceResolver$WLSInvoker.invoke(WLSInstanceResolver.java:120)
at weblogic.wsee.jaxws.WLSInstanceResolver$WLSInvoker.invoke(WLSInstanceResolver.java:93)
at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:149)
at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:88)
at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:1136)
at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:1050)
at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:1019)
at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:877)
at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:419)
at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:868)
at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:422)
at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:169)
at weblogic.wsee.jaxws.WLSServletAdapter.handle(WLSServletAdapter.java:229)
at weblogic.wsee.jaxws.HttpServletAdapter$AuthorizedInvoke.run(HttpServletAdapter.java:667)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:368)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:163)
at weblogic.wsee.util.ServerSecurityHelper.authenticatedInvoke(ServerSecurityHelper.java:108)
at weblogic.wsee.jaxws.HttpServletAdapter$3.run(HttpServletAdapter.java:286)
at weblogic.wsee.jaxws.HttpServletAdapter.post(HttpServletAdapter.java:295)
at weblogic.wsee.jaxws.JAXWSServlet.doRequest(JAXWSServlet.java:128)
at weblogic.servlet.http.AbstractAsyncServlet.service(AbstractAsyncServlet.java:103)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:286)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:260)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:137)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:350)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:141)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:649)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:124)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:232)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:94)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:224)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:78)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3654)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3620)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326)
at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:196)
at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71)
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2423)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2280)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2258)
at weblogic.servlet.internal.ServletRequestImpl.runInternal(ServletRequestImpl.java:1626)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1586)
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:270)
at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:348)
at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:333)
at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:54)
at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:617)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:397)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:346)
Judging by the first line, it should be the conflict, but i cant find anything inside CAT, and I would really appreciate any help regarding the issue .
On the link, i provide application example, very light, without datasoruce or anything, just 2 projects, one has app module with one method, second has ws with method to invoke method from app module.
Zippyshare.com - Application12.zip
-
Solved the issue by adding all needed libraries to WAR.
Obviously there was a problem with some sorf of conflict but CAT did not found anything, and its hard to understand why problem occurs in first place.