Java Application as jar File cannot connect to SAP via JCO

[Former Member]

Hey guys,

I wrote a test class to play a little with the java connector. Everything worked fine.

Now I want to pack my java class and the JCO classes in one jar file. I have written a manifest file with the Main-Class statement and after I start the jar file I got following exception:

Exception in thread "main" java.lang.ExceptionInInitializerError: JCO.classIniti

alize(): Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'

JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc [no sapjco

rfc in java.library.path]. java.library.path [C:\WINDOWS\system32;.;C:\WINDOWS\S

ystem32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\Ja

vaConnector\sapjco.jar;C:\j2sdk1.4.2_12\bin;]

at com.sap.mw.jco.JCO.<clinit>(JCO.java:776)

at de.lymez.sti.SAPAufruf.getDocnr(SAPAufruf.java:26)

at de.lymez.sti.Aufruf.main(Aufruf.java:12)

Can anyone help me? I don't think that I forget something during the JCO installation, because my class file worked fine and give me the correct values out of the SAP System.

Best regards,

Timo

[Vlado]

Hi Timo,

Please check and especially the post titled "WELL OUTLINED TUTORIAL HOW TO INSTALL AND CONFIGURE JCO ON WIN 2000 & XP".

Best regards,

Vladimir

[Former Member]

Thanks Vladimir,

but I followed the Tutorial and copied every dll in the wright folder and set the pathes. In one of the threads someone told about a tool named dependency walker. I used this with the sapjcorfc.dll and the tool answered that the DRVADODB.DLL is not found. Can anyone send me this dll? And why worked everything fine, when I use the class? I only have problems when I use one jar file!

Thanks for any help!!

Regards,

Timo