Class Loader problem - maven 2

[Ronen Yaari <Ro...@panayainc.com>]

 

All,

 

I have 6 projects that each one has a POM file. I have a master POM file
that I run it in order to build/test/package my projects.

I use maven 2.

When my test runs I get the error below:

 

I guess that this happen because there are 2 different project that
their test load the same DLL from 2 different classloaders.

Does maven use different classloader for each project? (and does not
release them at the end).

How can I solve the problem below?

 

java.lang.ExceptionInInitializerError: JCO.classInitialize(): Could not
load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'

JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc
[Native Library C:\WINDOWS\system32\sapjcorfc.dll already loaded in
another classloader]. java.library.path [C:\Program
Files\Java\jdk1.5.0_06\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\s
ystem32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program
Files\Java\jdk1.5.0_06\bin;D:\Program Files\maven-2.0.4\bin]

            at com.sap.mw.jco.JCO.<clinit>(JCO.java:738)

            at
com.panaya.sap.utils.SapUtils.connectSAP(SapUtils.java:1140)

            at com.panaya.sap.utils.SapUtils.<init>(SapUtils.java:175)

            at com.panaya.sap.utils.SapUtils.<clinit>(SapUtils.java:149)

            at
com.panaya.explorer.ui.controls.errormessages.ErrorMessagesPGraphTest.te
stValidGraph(ErrorMessagesPGraphTest.java:54)

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

            at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)

 

 

 

Thanks,

Ronen

 

AW: Class Loader problem - maven 2

["Kowalkowski, Markus" <ma...@siemens.com>]

Hi Ronen,

your system is missing some native libraries from SAP. You have to install the JCO or SAP GUI software, to get all that libraries.

Markus

> -----Ursprüngliche Nachricht-----
> Von: Ronen Yaari [mailto:Ronen@panayainc.com] 
> Gesendet: Montag, 3. Juli 2006 12:17
> An: users@maven.apache.org
> Betreff: Class Loader problem - maven 2
> 
> 
>  
> 
> All,
> 
>  
> 
> I have 6 projects that each one has a POM file. I have a 
> master POM file
> that I run it in order to build/test/package my projects.
> 
> I use maven 2.
> 
> When my test runs I get the error below:
> 
>  
> 
> I guess that this happen because there are 2 different project that
> their test load the same DLL from 2 different classloaders.
> 
> Does maven use different classloader for each project? (and does not
> release them at the end).
> 
> How can I solve the problem below?
> 
>  
> 
> java.lang.ExceptionInInitializerError: JCO.classInitialize(): 
> Could not
> load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'
> 
> JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc
> [Native Library C:\WINDOWS\system32\sapjcorfc.dll already loaded in
> another classloader]. java.library.path [C:\Program
> Files\Java\jdk1.5.0_06\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:
> \WINDOWS\s
> ystem32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program
> Files\Java\jdk1.5.0_06\bin;D:\Program Files\maven-2.0.4\bin]
> 
>             at com.sap.mw.jco.JCO.<clinit>(JCO.java:738)
> 
>             at
> com.panaya.sap.utils.SapUtils.connectSAP(SapUtils.java:1140)
> 
>             at com.panaya.sap.utils.SapUtils.<init>(SapUtils.java:175)
> 
>             at 
> com.panaya.sap.utils.SapUtils.<clinit>(SapUtils.java:149)
> 
>             at
> com.panaya.explorer.ui.controls.errormessages.ErrorMessagesPGr
> aphTest.te
> stValidGraph(ErrorMessagesPGraphTest.java:54)
> 
>             at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> 
>             at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccess
> orImpl.jav
> a:39)
> 
>  
> 
>  
> 
>  
> 
> Thanks,
> 
> Ronen
> 
>  
> 
> 

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