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Re: [Jython-users] adding JARs to sys.path
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From: Kent J. <ke...@td...> - 2006-10-19 23:33:12
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Alec Lebedev wrote:
> You are right, this is one of the approaches to solve the problem. I
> could also add the jar to the JRE classpath in an IDE.
>
> What I would really like to do is to be able to install my Java
> application in any directory and then pass the directory path to the
> Jython script and have it load all the necessary JARs from that dir. I
> want to minimize the amount of work that needs to be done to get my
> Jython script to work.
How do you launch your application? You have to get jython.jar into the
classpath, can you put your jar in the same way?
On windows I usually make simple .bat file launchers that set up the
classpath. They can contain relative paths to jars in a lib directory.
Kent
>
> Is there any way to add a JAR to the JRE classpath from a Jython script?
You have to use Java mechanisms, there is nothing special to Jython for
hacking the class path AFAIK.
Kent
>
> Thanks.
>
> */Josh Juneau <j.j...@mc...>/* wrote:
>
> If you are using Windows environment, you should include the jar in
> your CLASSPATH prior to invoking the script.
>
> For instance, perform a set CLASSPATH=<path to your jar>/yourjar.jar
> and then invoke your script.
>
> That should do the trick.
>
> ----- Original Message -----
> *From:* Alec Lebedev <mailto:auk...@ya...>
> *To:* jyt...@li...
> <mailto:jyt...@li...>
> *Sent:* Thursday, October 19, 2006 5:11 PM
> *Subject:* [Jython-users] adding JARs to sys.path
>
> Hi,
>
> I have a jython script, which calls a Java class, which requires
> a certain jar to be on the classpath. I want to add the
> necessary jar to the classpath in jython before calling the java
> class. I tried the following:
> sys.path.append("C:/dev/lib/myjar.jar");
>
> However, the java class still throws NoClassDefFoundError. I
> also tried the following with no success:
> import jreload
> jreload.makeLoadSet( "myset", ["C:/dev/lib/myjar.jar"] )
>
> How can I add a jar to java classpath before calling the java class?
>
> Thanks.
>
> Alec
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