tomcat-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Josef Henryson <>
Subject Re: UnsatisfiedLinkError - JNI
Date Wed, 07 Jul 2004 21:38:23 GMT
See bottom of message...

On Jul 7, 2004, at 21:33, Tim Penhey wrote:

> Josef Henryson wrote:
>> Hi!
>> I get an UnsatisfiedLinkError when trying to 
>> System.loadLibrary("foo") from a class instantiated within a Servlet. 
>> The library libFoo.jnilib is in a folder within java.library.path and 
>> the class loading it is inside a JAR in $CATALINA_HOME/shared/lib. 
>> Beside the JNI library is a native library libBar.dylib.
>> I'm running Tomcat 5.0.25 on Mac OS X 10.3.4
>> Here's the exception:
>> UnsatisfiedLinkError: 
>> /Users/henryson/Library/Java/Extensions/libFoo.jnilib:
>> java.lang.UnsatisfiedLinkError: 
>> /Users/henryson/Library/Java/Extensions/libFoo.jnilib:
>>     at java.lang.ClassLoader$NativeLibrary.load(Native Method)
>>     at java.lang.ClassLoader.loadLibrary0(
>>     at java.lang.ClassLoader.loadLibrary(
>>     at java.lang.Runtime.loadLibrary0(
>>     at java.lang.System.loadLibrary(
>> I have tried loading the library from a small Java application 
>> outside the Tomcat server and it works fine when all 
>> classes/libraries are within the same folder.
>> Of course I have searched for a solution on Google and I have also 
>> search old entries on this list (in an archive on a website) but 
>> there just don't seem to be a solution available out there... =(
>> Anyone that have a clue? I would be VERY thankful =)
>> Regards,
>> Josef Henryson
> Well given the fact that the JNI library works fine when in a stand 
> alone environment, it sounds like a load path problem.  I'm not sure 
> what OS X uses, but on unix it is the LD_LIBRARY_PATH, or on Windows 
> the PATH.  Try and get the code to output the environment before it 
> does the load library call and make sure that the locations for all 
> the dependant libraries are there.

Tim, thank you for your advice.

I tried setting java.library.path before, but when setting 
LD_LIBRARY_PATH and DYLD_LIBRARY_PATH (Mac OS X/Darwin) it seems to 
work!! :-)

However, it only works when I'm running Tomcat from the startup script 
from command line. When I try to start Tomcat from Eclipse plugin, it 
still doesn't find the library =( Which makes it harder to debug...

Anyone familiar with setting library paths to be found from 
Eclipse/Tomcat plugin??



To unsubscribe, e-mail:
For additional commands, e-mail:

View raw message