Using EJB and CommandBean as Model in WD

Hi Experts,
I'm quite new to DI. My problem is, I created an EJB which is accessing a DB. Now I created a commandBean which accesses the EJB. I want to use this commandBean as beanModel in WD. I created public parts for the CommandBean but when I want to create the model in WD-Perspective and choose used dc as source, I can't find the jar file of the commandBean, that I wanted to expose with the public parts. Do I create public parts the wrong way? Or what could be the error? Is my approach correct in using a commandBean to access the EJB and use the CommandBean as Model?
When I want to create the jar file of the CommandBean I get the following messages:
JAR creation failed. See details for additional information.
Problem writing /DI1_TP1IP1_Dzvejbhelpcom.bla/src/packages/com/sap/bla/MyCommandBean.jar to JAR: duplicate entry: com/sap/bla/MyCommandBean.jar
Problem writing /DI1_TP1IP1_Dzvejbhelpcom.bla/bin/com/sap/bla/MyCommandBean.class to JAR: duplicate entry: com/sap/bla/MyCommandBean.class
Problem writing /DI1_TP1IP1_Dzvejbhelpcom.chiron/src/packages/com/sap/bla/MyCommandBean.java to JAR: duplicate entry: com/sap/bla/MyCommandBean.java
But the jar file is created? Could it be corrupted?
Any help is appreciated
Regards Manuel

Hi Stefanie,
you're right. Web Services is the better approach. So I wanted to use a web service and created a session bean wich calls my entity bean. I created a web service around the session bean. But when I want to deploy the ear-Project with the web service I get the following exception. I already checked sdn for this problem, but I could'nt find the solution:
Caught exception during application deployment from SAP J2EE Engine's deploy service:
java.rmi.RemoteException: Cannot deploy application com.chiron/zv_ear.. Reason: Webservices common deployment exception! The reason is: Error occurred, trying to update web services for application com.chiron/zv_ear. . Additional info: none; nested exception is: java.lang.Exception: com.sap.engine.interfaces.webservices.server.deploy.WSDeploymentException: Webservices common deployment exception! The reason is: Error occurred, trying to update web services for application com.chiron/zv_ear. . Additional info: none
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateProcessor.updateWebServices(WSUpdateProcessor.java:164)
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateProcessor.updateWebServices(WSUpdateProcessor.java:118)
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateProcessor.updateWebServices(WSUpdateProcessor.java:86)
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateManager.makeUpdate(WSUpdateManager.java:52)
 at com.sap.engine.services.webservices.server.deploy.WSDeployer.makeUpdate(WSDeployer.java:274)
 at com.sap.engine.services.deploy.server.application.UpdateTransaction.makeComponents(UpdateTransaction.java:400)
 at com.sap.engine.services.deploy.server.application.DeployUtilTransaction.commonBegin(DeployUtilTransaction.java:321)
 at com.sap.engine.services.deploy.server.application.UpdateTransaction.begin(UpdateTransaction.java:164)
 at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhasesOnOneServer(ApplicationTransaction.java:292)
 at com.sap.engine.services.deploy.server.application.ApplicationTransaction.makeAllPhases(ApplicationTransaction.java:326)
 at com.sap.engine.services.deploy.server.DeployServiceImpl.makeGlobalTransaction(DeployServiceImpl.java:3184)
 at com.sap.engine.services.deploy.server.DeployServiceImpl.update(DeployServiceImpl.java:669)
 at com.sap.engine.services.deploy.server.DeployServiceImplp4_Skel.dispatch(DeployServiceImplp4_Skel.java:1278)
 at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java:313)
 at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java:199)
 at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java:136)
 at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
 at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
 at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
 at java.security.AccessController.doPrivileged(Native Method)
 at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
 at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
Caused by: com.sap.engine.interfaces.webservices.server.deploy.WSDeploymentException: Webservices deployment exception! The reason is: Error occurred, trying to generate web services deployment files for application com.chiron/zv_ear. . The error refers to application: none, jar: , web service: .
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateProcessor.generateDeployFiles(WSUpdateProcessor.java:296)
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateProcessor.deployWebServices(WSUpdateProcessor.java:262)
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateProcessor.updateWebServices(WSUpdateProcessor.java:155)
 ... 21 more
Caused by: com.sap.engine.interfaces.webservices.server.deploy.WSDeploymentException: Webservices common deployment exception! The reason is: Error occurred, parsing com.sap.engine.services.webservices.server.deploy.descriptors.sapwebservices.WSDescriptor descriptor, application com.chiron/zv_ear, web service zvglWS, location message: type: jar file, location: F:\usr\sap\TP1\JC00\j2ee\cluster\server0\.\temp\deploy\work\deploying\reader1197465981374\com.chiron~zv_model3.jar . . Additional info:
 at com.sap.engine.services.webservices.server.deploy.ws.WSDefinitionFactory.parseWSDescriptor(WSDefinitionFactory.java:907)
 at com.sap.engine.services.webservices.server.deploy.ws.WSDefinitionFactory.loadWebService(WSDefinitionFactory.java:176)
 at com.sap.engine.services.webservices.server.deploy.ws.WSDefinitionFactory.loadWebServices(WSDefinitionFactory.java:158)
 at com.sap.engine.services.webservices.server.deploy.ws.update.WSUpdateProcessor.generateDeployFiles(WSUpdateProcessor.java:284)
 ... 23 more
Caused by: com.sap.engine.interfaces.webservices.server.deploy.WSDeploymentException: Webservices common deployment exception! The reason is: Error occurred, trying to parse documentation for web service zvglWS. . Additional info:
 at com.sap.engine.services.webservices.server.deploy.ws.WSDefinitionFactory.parseDocumentation(WSDefinitionFactory.java:1590)
 at com.sap.engine.services.webservices.server.deploy.ws.WSDefinitionFactory.parseWSDAndDocumentation(WSDefinitionFactory.java:1564)
 at com.sap.engine.services.webservices.server.deploy.ws.WSDefinitionFactory.parseWSDescriptor(WSDefinitionFactory.java:814)
 ... 26 more
Caused by: java.io.FileNotFoundException: .\temp\webservices\deploy\com.chiron_zv_ear\webservices\com1\com\sap\chiron\zvglWSWsd.wsdef (The system cannot find the path specified)
 at java.io.FileOutputStream.open(Native Method)
 at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
 at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
 at com.sap.engine.lib.jar.JarExtractor.extractFile(JarExtractor.java:232)
 at com.sap.engine.services.webservices.server.deploy.ws.WSArchiveFilesLocationHandler.getWsdInputStream(WSArchiveFilesLocationHandler.java:184)
 at com.sap.engine.services.webservices.server.deploy.ws.WSDefinitionFactory.parseDocumentation(WSDefinitionFactory.java:1574)
 ... 28 more
(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
Deployment exception : The deployment of at least one item aborted
I already removed the ear and deployed again. That works one time, after that I get the exception again. But even when it works one time, I can't find the web service in the web service navigator of the j2ee engine.
Regards Manuel

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