Servlet and JNI

[fmorel]

I tested a JAVA API that does JNI in a standard JAVA application and it works properly.
I have problems using it in a servlet : I get an error message: "java.lang.UnsatisfiedLinkError: no xxx in java.library.path" where xxx is the name of a dll used by the JAVA API.

I know that this problem is linked with path or classpath. How do I set the path/classpath in the servlet context ?

Thanks a lot for answers !

 

[palbano]

Going by memory, i found in a Windows environment the OS Path mechanism was used to load the native library, which would actually make sense.

-pete

 

[fmorel]

Thanks a lot for your answer palbano.
I am on a windows environment too.
The path to the DLL is in the OS PATH.
I tried to copy the missing dll file to C:\WINNT and it worked (but it is not very satisfied by this workaround ...).
- So why does it look in C:\WINNT and not in the PATH ?

This JAVA API also needs some specific environment variables to be set before it can be used.
How can these environment variables be seen by the servlet?

 

[palbano]

I don't have any idea why it would not find the DLL if the path was correct. I believe that was the behavior that i found.

>> This JAVA API also needs some specific environment
>> variables to be set before it can be used.
>> How can these environment variables be seen by the
>> servlet?

If your referring to Java system properties i believe you should be able to set them in the web.xml file entries for the servlet. I can't help you with the specific web.xml syntax for that since i am unsure what it is.

-pete