J2EE Engine not finding my processFunction method

[Former Member]

I built a very simple bean for an SAP to J2EE call. The bean is named after the calling function module and has a processFunction method with one parm JCO.Function. But when I make a call from SAP, I get an Incompatible bean type - no 'processFunction' found error. The ejb-jar.xml has the method. The JNDI service browser shows the method. Any ideas?

Thanks for you help,

Erin

[Former Member]

maybe wrong case, IFAIK jndi names are case sensitive -> ABAP RFMs always upper case!

[Former Member]

I got that part covered. My bean is found, but the processFunction method is not. thanks Erin

[Vlado]

Hi Erin,

Sorry for the late response. Have you defined a weak reference from your J2EE application to the com.sap.mw.jco library? This must be done in the application-j2ee-engine.xml. Note that you must NOT put the jrfc.jar or sapjco.jar in the EAR file of the application.

You can also check the following thread

and my replies there.

Best regards,

Vladimir

[Former Member]

Hello, Vladimir!

Please, help me.

I have NW 7.0 (Kernel Version:   7.00   PatchLevel 109886.44 + VM Version:   1.4.2_26-b03) and NWDS 7.0.28

I built a simple EJB-application for ABAP calls Java like here http://scn.sap.com/people/thorstenster/blog/2008/11/21/abap-calls-java-via-rfc-1-introduction

All works fine. Bean return some string to ABAP.

I need to extend the application for make http(s) connection from. I downloaded the external jar "common-httpclient3.0" from http://hc.apache.org and all dependent jars.

Add it to ejb-project as External Jars. Build and Deploy. I have "Exception in method processFunction." message in ABAP.

Than i create deployable unit like DC with those jars and deploy it to NW as describing here http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/60d99678-1a29-2d10-94b4-9d9a67b71...

I see the component in Visual Admin. i add the my DC like sapjco.jar in EAR with a weak reference.

And i have the same problem. I think the application doesn't see classes from jar "common-httpclient" or from his dependency.

In default.log in VA a found that:

1 error message

Severity : Error

Category :

Location : com.sap.engine.services.ejb

Application : sap.com/EchoTestEAR

Thread : SAPEngine_Application_Thread[impl:3]_26

Datasource : 3342650:C:\usr\sap\DPL\DVEBMGS00\j2ee\cluster\server0\log\defaultTrace.trc

Message ID : 000C297925FC00610000006900000FFC0004DA920E379118

Source Name : com.sap.engine.services.ejb

Argument Objs : com.sap.engine.services.ejb.exceptions.BaseEJBException: Exception in method processFunction.

    at com.sap.examples.echotest.EchoTestLocalLocalObjectImpl0_0.processFunction(EchoTestLocalLocalObjectImpl0_0.java:119)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

    at java.lang.reflect.Method.invoke(Method.java:331)

    at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.call(RFCDefaultRequestHandler.java:277)

    at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.handleRequest(RFCDefaultRequestHandler.java:219)

    at com.sap.engine.services.rfcengine.RFCJCOServer$J2EEApplicationRunnable.run(RFCJCOServer.java:260)

    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:102)

    at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)

Caused by: java.lang.NoClassDefFoundError

    at com.sap.examples.echotest.EchoTestBean.processFunction(EchoTestBean.java:60)

    at com.sap.examples.echotest.EchoTestLocalLocalObjectImpl0_0.processFunction(EchoTestLocalLocalObjectImpl0_0.java:103)

    ... 11 more

Arguments : com.sap.engine.services.ejb.exceptions.BaseEJBException: Exception in method processFunction.

    at com.sap.examples.echotest.EchoTestLocalLocalObjectImpl0_0.processFunction(EchoTestLocalLocalObjectImpl0_0.java:119)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

    at java.lang.reflect.Method.invoke(Method.java:331)

    at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.call(RFCDefaultRequestHandler.java:277)

    at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.handleRequest(RFCDefaultRequestHandler.java:219)

    at com.sap.engine.services.rfcengine.RFCJCOServer$J2EEApplicationRunnable.run(RFCJCOServer.java:260)

    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:102)

    at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)

Caused by: java.lang.NoClassDefFoundError

    at com.sap.examples.echotest.EchoTestBean.processFunction(EchoTestBean.java:60)

    at com.sap.examples.echotest.EchoTestLocalLocalObjectImpl0_0.processFunction(EchoTestLocalLocalObjectImpl0_0.java:103)

    ... 11 more

,

Dsr Component : n/a

Dsr Transaction : ecc24f10a74711e2ad77000c297925fc

Dsr User :

Indent : 0

Level : 0

Message Code :

Message Type : 1

Relatives :

Resource Bundlename :

Session : 0

Source : com.sap.engine.services.ejb

ThreadObject : SAPEngine_Application_Thread[impl:3]_26

Transaction :

User : J2EE_GUEST

2 error message

Date : 04/17/2013

Time : 18:45:37:387

Message : java.lang.reflect.InvocationTargetException

Severity : Error

Category :

Location : com.sap.engine.services.rfcengine.DefaultRequestHandler.handleRequest(JCO.Function function)

Application :

Thread : SAPEngine_Application_Thread[impl:3]_24

Datasource : 3342650:C:\usr\sap\DPL\DVEBMGS00\j2ee\cluster\server0\log\defaultTrace.trc

Message ID : 000C297925FC006C0000002600000FFC0004DA8F8A0124CE

Source Name : com.sap.engine.services.rfcengine

Argument Objs :

Arguments :

Dsr Component : n/a

Dsr Transaction : e54870b0a74811e2aa16000c297925fc

Dsr User :

Indent : 0

Level : 0

Message Code :

Message Type : 0

Relatives :

Resource Bundlename :

Session : 0

Source : com.sap.engine.services.rfcengine

ThreadObject : SAPEngine_Application_Thread[impl:3]_24

Transaction :

User : J2EE_GUEST

3 error message

Date : 04/17/2013

Time : 18:45:37:387

Message : java.lang.reflect.InvocationTargetException

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

    at java.lang.reflect.Method.invoke(Method.java:331)

    at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.call(RFCDefaultRequestHandler.java:277)

    at com.sap.engine.services.rfcengine.RFCDefaultRequestHandler.handleRequest(RFCDefaultRequestHandler.java:219)

    at com.sap.engine.services.rfcengine.RFCJCOServer$J2EEApplicationRunnable.run(RFCJCOServer.java:260)

    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:102)

    at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)

Caused by: com.sap.engine.services.ejb.exceptions.BaseEJBException: Exception in method processFunction.

    at com.sap.examples.echotest.EchoTestLocalLocalObjectImpl0_0.processFunction(EchoTestLocalLocalObjectImpl0_0.java:119)

    ... 11 more

Caused by: java.lang.NoClassDefFoundError

    at com.sap.examples.echotest.EchoTestBean.processFunction(EchoTestBean.java:60)

    at com.sap.examples.echotest.EchoTestLocalLocalObjectImpl0_0.processFunction(EchoTestLocalLocalObjectImpl0_0.java:103)

    ... 11 more

Severity : Error

Category :

Location : com.sap.engine.services.rfcengine.DefaultRequestHandler.handleRequest(JCO.Function function)

Application :

Thread : SAPEngine_Application_Thread[impl:3]_24

Datasource : 3342650:C:\usr\sap\DPL\DVEBMGS00\j2ee\cluster\server0\log\defaultTrace.trc

Message ID : 000C297925FC006C0000002700000FFC0004DA8F8A012516

Source Name : com.sap.engine.services.rfcengine

Argument Objs :

Arguments :

Dsr Component : n/a

Dsr Transaction : e54870b0a74811e2aa16000c297925fc

Dsr User :

Indent : 0

Level : 0

Message Code :

Message Type : 0

Relatives :

Resource Bundlename :

Session : 0

Source : com.sap.engine.services.rfcengine

ThreadObject : SAPEngine_Application_Thread[impl:3]_24

Transaction :

User : J2EE_GUEST

If the problem with libraries - how can i add it to j2ee server?

Thank you!

[Former Member]

Hello. I found a solution. The tutorial http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/60d99678-1a29-2d10-94b4-9d9a67b71... have some mistakes.