EJB library reference from Web Dynpro

Hi,
1. I have got a WD DC that references an EJB DC and an external library DC (ext_ims_lib_depl) on the same server
2. I have specified the ejb20 DC under SAP-JEE_1 as a used DC on both the DCs for design time, deploy time and runtime.
3. But after deploying the WD DC and trying to invoke the call to the EJB DC I get the exception below.
4. It evident that the classloader cannot pick up the ejb20.jar and my question is how do I resolve the reference, I tried adding sap.com/ejb20 under Webdynpro references but it does not seem to do the trick.
Exception----
Processing HTTP request to servlet [dispatcher] finished with error. The error is: java.lang.NoClassDefFoundError: javax/ejb/EJBHome
Loader Info -
ClassLoader name: [library: test.comapplext_ims_lib_depl]
Parent loader name: [Frame ClassLoader]
No references !
Resources:
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\commons-collections-2.1.1.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\test.comapplj2ee_ims.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\cglib-2.1.3.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\commons-logging-1.0.4.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\dom4j-1.6.1.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\ant-antlr-1.6.5.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\ims_beans.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\ehcache- 1.2.3.jar
   C:\usr\sap\VDW\JC00\j2ee\cluster\server0\bin\ext\test.comapplext_ims_lib_depl\hibernate3.jar
Loading model: {parent,local,references}
The error occurred while trying to load "com.test.za.securityRiskManagement.service.EventHandlerHome".
at com.sap.engine.frame.core.load.ReferencedLoader.loadClass(ReferencedLoader.java:401)
at java.lang.ClassLoader.loadClassInternal (ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at com.test.za.securityRiskManagement.bean.EventCommandBean.executeCreateEvent(EventCommandBean.java :205)
at com.test.event.view.EventRegistrationView.onActionSubmit(EventRegistrationView.java:143)
at com.test.event.view.wdp.InternalEventRegistrationView.wdInvokeEventHandler(InternalEventRegistrationView.java :150)
at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87)
at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:67)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doHandleActionEvent (WindowPhaseModel.java:420)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:132)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java :335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:299)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:752)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:705)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:261)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:154)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent (DispatcherServlet.java:62)
at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doPost(DispatcherServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service (HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:401)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java :266)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:387)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:365)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:944)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:266)
at com.sap.engine.services.httpserver.server.Client.handle (Client.java:95)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:160)
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)
Thanks.

Hi Maksim,
Below is an extract of my dcdef file:
<dependency>
       <dc-ref>
           <name>ejb20</name>
          <vendor>sap.com</vendor>
      </dc-ref>
      <pp-ref>default</pp-ref>
      <at-build-time/>
      <at-runtime qualifier="strong"/>
</dependency>
It looks exactly like what you send except for the runtime qualifier.
Thanks.

Similar Messages

Couldn't complete tutorial 'Integrating EJB 3.0 into Web Dynpro ...'

Hi All,
I am trying to complete the Integrating EJB 3.0 into Web Dynpro Using the EJB Model Importer tutorial that goes with SAP NetWeaver Composition Environment 7.1 SP3 Developer Studio.
Does anyone ever completed this tutorial because I have problems completing it. The result is very important for me because I need to use this technology for my essay.
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Hi Sander,
I guess, it's not a bug in Web Dynpro, maybe it's a bug in the tutorial
I tried something similar, but not following the tutorial and it works. I wasn't able to call the model from the view controller and I guess that's the problem. Take the code from the init-method of the view controller and put it to the component controller's init -method and the code inside the onActionGetStudent and put it into a method you create in the component controller, too. From onActionGetStudent just call this method in the component controller with some code like this:
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CAF DB Update for CAF Entity Service from Web Dynpro

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Thanks & Regards
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Message was edited by:
        Chandan Jash

Hi Chandan,
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https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/cef4f43e-0d01-0010-db84-ede25c874115.
award points if info is helpful
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Connecting to SAP from Web Dynpro

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Using External Library in Mobile Web Dynpro Offline

Hi all,
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Hi,
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CAF DB update from Web Dynpro

Hi all,
I have created an entity service in CAF called Contacts which contains the following attributes.
phoneNo
cellNo
emailId.
Another entity service called "Person" is created. This contains the following attributes.
personId
personName
personAddr
contactsRef. (Cardinality -> 0..n , Relational Type -> Composition)
That means Contacts entity service is used within Person entity service. Now it is working fine within CAF service browser. Now the Web Dynpro DC of CAF application is used within another custom Web Dynpro DC project. I want to store data from Web Dynpro. So I have written the following code within web dynpro custom method.
APerson person = PersonServiceProxy.create();
     java.util.List ls = new ArrayList();
    for(int i=0; i<4;i++)
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     contact.setEmailID("[email protected]");
     contact.setPhoneNo("432258");
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     person.setPersonID("9999");
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After saving the data from Web Dynpro I am trying to test it from CAF service browser. But I am getting only the parent row. I mean only the value of personId, personName and personAddr fields which I have stored from Web Dynpro. But no value is coming within the table for Contacts entity service for composition relation.
Could anybody help me how can I solve my problem?
Thanks & Regards
Chandan

Hi Chandan,
Can you do person.getRelatedModelObjects() and get the contact object, to check whether it is null, also check in the CAF DB whether the data you entered is present.
I am not sure the code is actually adding the contact model object to person.
Go thru this SDN Blog on usage of the CMI API's, there is a link for CMI documentation in it which might help you get the right code for adding the contact object.
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/cef4f43e-0d01-0010-db84-ede25c874115.
award points if info is helpful
Regards,
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How to get the Response Code when a URL is launched from Web Dynpro

Hello Experts,
I have a Web Dynpro Application in which in one of its views i have an IFrame UI element in which i will show a resource stored somewhere ..
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I am using the following code to get the Response Code:
try{
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Please let me know the correct way of getting the Response Code from Web Dynpro.
Also my resource is lying on a SAP Portal 6.4
Best Regards
Sundeep
Edited by: Sundeep Sethi on Feb 18, 2008 9:07 AM
Edited by: Sundeep Sethi on Feb 18, 2008 10:23 AM

Hi,
Check this code from /thread/5242768 [original link is broken] if it works.
try{
URL myurl = new URL("http://calendar.google.com");
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if(connection instanceof HttpURLConnection) {
HttpURLConnection httpConnection = (HttpURLConnection) connection;
HttpURLConnection.setFollowRedirects(true);
httpConnection.setRequestMethod("HEAD");
httpConnection.connect();
System.out.println("Response = "+httpConnection.getResponseCode());
catch(Exception e) {
// print exception
Regards,
Harini S

Regarding how to pass the data from web dynpro to workflow

hi gurus,
how to pass the data from web dynpro to workflow.
Regards
vijay

Check this [thread|SAP_WAPI_START_WORKFLOW;

How to pass the data from web dynpro to workflow.

hi gurus,
how to pass the data from web dynpro to workflow.
Regards
vijay

Hi
you can use function module
data   ls_input_container TYPE swr_cont.
data   lt_input_container TYPE TABLE OF swr_cont.
CALL FUNCTION 'SAP_WAPI_START_WORKFLOW'
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      new_status      = lv_new_status
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ls_input_container-value = ls_skna1-kunnr ."wd_this->lv_kunnr.
APPEND ls_input_container TO lt_input_container .
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ls_input_container-value = lv_cluser.
APPEND ls_input_container TO lt_input_container .
ls_input_container-element = 'BUKRS'.
ls_input_container-value = lv_bukrs. " youe value as per requirement.
APPEND ls_input_container TO lt_input_container .
ls_input_container-element = 'VKORG'.
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ls_input_container-element = 'VTWEG'.
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Arvind
Edited by: Arvind Patel on May 14, 2010 7:38 AM

Couldn't complete tutorial u0091Integrating EJB 3.0 into Web Dynpro ... '

Hi All,
I am trying to complete the Integrating EJB 3.0 into Web Dynpro Using the EJB Model Importer tutorial that goes with SAP NetWeaver Composition Environment 7.1 SP3 Developer Studio.
Does anyone ever completed this tutorial because I have problems completing it. The result is very important for me because I need to use this technology for my essay.
In this tutorial you create a button that calls the method StudsBean.getStudent(String). In this method the object student is created and it will be returned. In several labels the information of the returned student should be displayed. But that doesnt happen, when I push the button no error occurs but the labels are still empty. When I try to debug the Enterprise Bean and Web Dynpro application I see that the method StudsBean.getStudent(String) is called and the propertys are set and the student object is returned, but still it isnt displayed.
After discussing this with a colleague I tried to search for a solution on the SDN and of course Google. First I thought I would be a bug but I only found 2 people with the same problem. I found it remarkable because its one of the key subjects of Java EE 5 and its a tutorial displayed in the welcome page of the Developer Studio.
So do you people think its a bug in WebDynpro? Because I am sure that I followed all the steps mentioned (a colleague checked it even).
Regards,
Sander

Hi Vesselin,
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Kind Regards,
Sander

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'://' host ':' port
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Chandra

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Hi Everybody! Hope you had a good new years eve
Is it possible to generate a File on a Server outgoing from Web Dynpro?
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REPORT that is called with Batch Input from Web Dynpro:
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exporting
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    is_export            = gs_export
importing
    ev_string            = gs_export-document
    et_dataset           = data_tab
exceptions
    parameter_is_initial = 1
    others               = 2.
if sy-subrc <> 0.
endif.
concatenate '\\SERVER\EXPORT\' gs_export-filename into lv_filename.
call function 'GUI_DOWNLOAD'
exporting
    filename                = lv_filename
tables
    data_tab                = data_tab
exceptions
    file_write_error        = 1
    no_batch                = 2
    gui_refuse_filetransfer = 3
    invalid_type            = 4
    others                  = 5.
if sy-subrc <> 0.
exit.
endif.

HI,
GUI_DOWNLOAD does not get's executed in the Backgroud.
there is no way to do it as a background job.. create the folder.. transfer the file to the application server in the backgorund using OPEN DATASET... use the tcode CG3Y to download the file from the app server to your folder..

Authorization error calling a XI web service from Web Dynpro

Hi all,
I'm trying to communicate to XI from a Web Dynpro application but I get an Unauthorization error (401).
I've generated a WSDL in XI and import it to web dynpro as a new Model. But when a I call the web service, the exception "Service call exception; nested exception is: com.sap.engine.services.webservices.jaxrpc.exceptions.InvalidResponseCodeException: Invalid Response Code: (401) Unauthorized." appears.
I don't know how to pass the right user and password from Web Dynpro, I've tried the web service from SOAP client tools and it works fine.
I'll apreciate any help.
Regards,
Diego.

Hola mi nombre es Luis,
Creyendo que eres español te escribo en tal idioma.
He visto que a ti también te devolvía un error de autentificación 401, y que lo subsanaste, pero a mi con la solución que te dieron no me vale, ya que implemento el código que te ofrecieron para arreglarlo y ahora me da un fallo de "Server Error" poniendo en usuario y password, los correspondientes a XI.
+Request_MI_outTurnoverDetailsDisplay_MI_outTurnoverDetailsDisplay req=new Request_MI_outTurnoverDetailsDisplay_MI_outTurnoverDetailsDisplay();
wdContext.nodeRequest_MI_outTurnoverDetailsDisplay_MI_outTurnoverDetailsDisplay().bind(req);
req._setUser("username");
req._setPassword("password");+
No sé si es que ese usuario y contraseña son otros distintos.
Si pudieras ayudarme, te lo agradecería.
Un saludo, Luis

EJB library reference from Web Dynpro

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