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From Tomás Tormo <>
Subject Re: *SPAM* Re: How to change the CLASSPATH in tomcat 5.028 for a concrete webservice
Date Mon, 10 Sep 2007 09:39:44 GMT
Hi David

   I'm using tomcat 5.028 in Ubuntu 6.10 . I've written a java 
applicattion wich uses a wrapper to communicate with an applicattion 
written in C, wich is the "core" of my applicattion. Both the wrapper 
and the core are third party applicattions, and because of that i don't 
have the source code, I just have the API.

The third party sent me an example application wich uses the core. And, 
as I could see in the script wich lauches the application, this folder 
should be added to the classpath in order to be able to be located by 
the wrapper applicattion. The documentation of the wrapper just says 
that this folder has to exist with an specific name.

My problem is that my applicattion works fine launched from shell (it 
founds the folder and uses the core perfectly) but it doesn't work as a 
webservice. It is not able to find the resource folder (let's call it 
"cfg"). As I can see in the catalina log, the application tries to load 
the resources (via ClassLoader I guess) and then launches an exception 
saying that is not able to find it. The client  gets a HTTPErrorCode0.

I think I've tried everything to make it find the folder, but I wasn't 
successful. do you have any idea?

thank you very  much

David Smith escribió:
> I wold STRONLY recommend you DO NOT touch the CLASSPATH env variable.  
> It's just a horrible idea.  What is it about your webservice that 
> requires the alteration of CLASSPATH?  Can you describe that a bit 
> more?  The standard classloader structure works very well in virtually 
> all other cases.
> --David
> Tomás Tormo wrote:
>> Hi again
>>  I've tried to set the classpath in in order to have my 
>> own classpath set when tomcat starts up ( I show it in as 
>> well and it looks good). But my problem is that when I show it in my 
>> webservice (using 
>> System.out.println(System.getProperty("java.class.path"))) it is 
>> changed again (it only points to a few jar files in /bin folder) and 
>> therefore my webservice can't work properly. Shouldn't it be pinting 
>> to my my /webapp/webservice/WEB-INF/lib folder as well? Does anybody 
>> know how to fix this problem?
>> Hakan: I've tried the solution you gave me (create a script 
>> called from but tomcat don't start up!
>> Thank you very much for your future answers :p
>> Tomás Tormo escribió:
>>> Hi Hakan
>>> First of all thank you for your fast answer ;).
>>> Do you mean to create an script called wich will set the 
>>> CLASSPATH (by export CLASSPATH.. etc)? This script should be called 
>>> by a modified
>>> By they way, I printed the CLASSPATH in my webservice (using 
>>> System.out.println(System.getProperty("java.class.path")); ) and it 
>>> says that my CLASSPATH is only pointing to a few jars in the bin 
>>> folder, not even to my /lib folder in my webservice folder (I hope I 
>>> explained myself well, I'm not using war files). Shouldn't it be 
>>> pointing to my /webapp/webservice/WEB-INF/lib folder as well?
>>> Thank you!!
>>> Greetings!!
>>> Hakan Koseoglu escribió:
>>>> Hi Tomás,
>>>> Tomás Tormo said the following on 09/10/2007 08:26 AM:
>>>>> I would like to change the classpath for a concrete webservice in 
>>>>> Tomcat 5.028 because the webservice has to use a concrete folder 
>>>>> in order to work. This folder should be in the CLASSPATH in order 
>>>>> to make the webservice work properly and because the webservice 
>>>>> can't find it, it doesn't work.
>>>> With Tomcat 5, creating a solves the problem for me. It 
>>>> gets called if you start the Tomcat using
>>>> Any variable you define there will be used, including the 
>>>> classpath. We use it to point to the libraries which we don't put 
>>>> into common/lib nor war files.
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