Using EJB and CommandBean as Model in WD

[Former Member]

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_D_zvejbhelpcom.bla/src/packages/com/sap/bla/MyCommandBean.jar to JAR: duplicate entry: com/sap/bla/MyCommandBean.jar

Problem writing /DI1_TP1IP1_D_zvejbhelpcom.bla/bin/com/sap/bla/MyCommandBean.class to JAR: duplicate entry: com/sap/bla/MyCommandBean.class

Problem writing /DI1_TP1IP1_D_zvejbhelpcom.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

[Former Member]

Hi Manuel,

which release are you on?

if you are using NW 2004 or 7.0, you can check the EJB-Tutorial (https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wdjava%20tutorials%207.0/using%20ejbs%20in%20web%20dynpro%20applications.pdf), but to wrap the EJB into a Web Service would be the recommended way to do it.

if you are using CE, you can use the EJB model based on EJB 3.0

kind regards

Stefanie

[Former Member]

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

<b>Caused by: java.io.FileNotFoundException</b>: .\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

[Former Member]

I could solve the problem.

The error was that the packagename started with "com..." When deploying, the package is temporarily copied in a "com" folder. But my package already starts with "com". So the temp folder is named "com1", which is not supported. This was told to me by a SAP expert.

When the package doesn't start with "com" everything works fine.

So problem solved.

Regards Manuel

[Former Member]

Hi manuel,

have you seen this tutorial:

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/c0b53558-6df6-2910-cfbf-a63316bb...

kind regards

Stefanie

[Former Member]

Hi Stefanie,

thanks for your post. I will check this!

Regards Manuel

[Former Member]

I checked the tutorial. But in this tut, web services are used as model and for my small application I just want to use ejb and a Command Bean and not web services. I think there should also be a way to do that?

Regards Manuel

[Former Member]

Hi,

Have you checked this

/people/valery.silaev/blog/2005/06/29/apojo--almostplain-old-java-objects-as-model

Regards

Ayyapparaj