Problem with external libraries and Web DynPro

Hello,
we're stuck here.
We're trying for a week now to include external libraries(e.g. Hibernate) into our Web DynPro Project, without success so far.
We read every single forum and blog entry we could find on this topic.
E.g.: /people/valery.silaev/blog/2005/09/14/a-bit-of-impractical-scripting-for-web-dynpro
We're running Netweaver 2004s SP9 Trial Version.
The biggest problem is, that when we deploy an J2EE Server Component Library DC exactly like described in the blog entry above, although it is deployed correctly an lists under Server->Libraries in Visual Administrator, the external hibernate.jar doesn't get deployed onto the server. It's just an empty container named hib/lib without any entries in "Jars Contained". The sda file of the library DC also has only 2K and doesn't include the hibernate.jar which we added as used dc...
Any help would be greatly appreciated.
Or is there a simpler way to include external jars into Web DynPro Projects and deploy them to the server? (We already tried putting them into the lib folder without luck, we always get "NoClassDefFound...")
Edited by: Christian Wieland on Jan 31, 2008 11:22 AM

Hallo Christian,
this is a bug which should be fixed in NW 7.0 SP9 patch1: [Look at this forum thread on the same issue: External Library DC in NW2004s SP09|External Library DC in NW2004s SP09].
Regards, Bertram

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Using external libraries in Web Dynpro DCs

Hi,
I've followed the example in the following blog for using external libraries in my Web Dynpro (WD) DCs:
/people/valery.silaev/blog/2005/09/14/a-bit-of-impractical-scripting-for-web-dynpro and some other messages in the forums. However, it isn't working exactly as described in the blog. I have to twist it a bit to get it work. I were wondering if anyone has any better solution for this problem?
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- Step 3: Create WD DC wd1, add used DCs and WD reference libraries as described in the blog. Add WD components as public part. Build and deploy WD DC wd1.
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- Step 4: Create WD DC wd2, add used DCs and WD reference libraries as before. Try to build and FAIL!
The error occurs here because wd2 cannot access to the classes in the external libraries, similar to the problems described in thread Re: Problems with deploying a JAR file.
I've found a workaround, although quite tedious and cumbersom, but it works. My solution so far is:
- Round 1: Perform those 4 steps above, but in step 1, after adding the jars to the public part "ExternalLibs", set the property of the public part "purpose" to "compilation", then build and deploy all other DCs accordingly.
- Round 2: Change the public part "ExternalLibs" property to "assembly", then bulid and deploy all other DCs again.
And now I can reuse the external libraries in my WD DCs as well as WD DCs as library in other WD DCs.
I know it's not an elegant solution. So I were wondering if the experts out there can help me with better solutions?
Many thanks in advance for your help.
Regards,
Van
Edited by: Van Hai Ho on Dec 18, 2007 3:30 PM
Edited by: Van Hai Ho on Dec 18, 2007 3:31 PM

Hi Pascal,
Thank you so much for your help. Your suggestion has helped to make my life a lot easier.
Regards,
Van

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Use external libraries in web dynpro java

Dear Experts,
I need to add an external library to my project.
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Also project properties, add. jar outside, and throws me the following error:
[javac] Compiling 213 source files to D:\WORK\WORKSPACE\7.2.jdi\LocalDevelopment\t\2BF09F48E6D0E2C201262098A0E4D79F\classes
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Given these errors, I know my includes without problems and I can instantiate objects from library classes, but these errors I can not deploy.
I read the following link:
/people/raphael.vogel/blog/2008/05/05/how-to-use-external-libraries-in-the-sap-component-model-part-ii
I did everything the tutorial. I created the external library. I can see in my project "DC-Definition -> Used DCs" The public parts assembly and compilation. Now the problem is that it still does not recognize the classes of the libraries you want to use.
A level of code, when I try to instantiate the class does not recognize me. What could be missing? I did a couple of times step by step and gives me the same results.
I use SAP NetWeaver Developer Studio SAP NetWeaver 7.2 SP03 PAT0007 version.
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Rasim
Edited by: Rasim Donmez on Apr 11, 2011 4:50 PM
Edited by: Rasim Donmez on Apr 11, 2011 4:51 PM

Hi,
please find below path for adding External Jar files.
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then clcik on Java Build path->select libraries->select External External Jars.
after that just rebuild your project (not Build).
Regards,
Govindu
Edited by: Govindu Nagotla on Apr 12, 2011 2:28 PM

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[http://ant.apache.org/manual/tutorial-HelloWorldWithAnt.html?PHPSESSID=7292c8206cecdae00f82ea5ac3507e21|http://ant.apache.org/manual/tutorial-HelloWorldWithAnt.html?PHPSESSID=7292c8206cecdae00f82ea5ac3507e21]
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Message was edited by: Olaf Dieckmann

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