[rules-users] execution using "java -jar x.jar ..." fails

[Wolfgang Laun]

2010/6/23 Swindells, Thomas <TSwindells at nds.com>

>  What’s in your manifest in your jar file?
>
>
>
>From the extracted stuff, as proposed my Eclipse's jar builder:

$ cat META-INF/MANIFEST.MF
Manifest-Version: 1.0
Created-By: 1.6.0_0 (Sun Microsystems Inc.)
Main-Class: rss.aws.init.Main


(additional newline above this line)

Also should it be CP=”drools/*:drools/lib/*:.” Rather than droos?
>
>
> OK, typo, I'm using the same (correct) paths to /extra/drools-5.1.0.M2/
throughout, with echo $CP to confirm.

Happens with two different sets of Drools jars.

-W


> Thomas
>
>
>
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Wolfgang Laun
> *Sent:* 23 June 2010 15:45
> *To:* rules-users at lists.jboss.org
> *Subject:* [rules-users] execution using "java -jar x.jar ..." fails
>
>
>
> The application works fine in Eclipse.
>
> In Eclipse, I created a jar file x.jar from the .class and a few .drl
> files, and copied x.jar to /tmp/x/
>
> Now, in /tmp/x
>    CP="droos/*:drools/lib/*"
>    java -cp "$CP" -jar dpvt.jar par...
> This fails on the first attempt to access any class from a drools jar file.
>
> In /tmp/x, I unpack x.jar and call
>    CP="droos/*:drools/lib/*:."
>    java -cp "$CP" rss.aws.init.Main par...
> AND THIS WORKS!
>
> So, what is different when starting a Java program with java -jar as
> opposed
> to java x.y.Main?
>
> The stack dump is not very informative:
>
> java.lang.NoClassDefFoundError: org/drools/KnowledgeBaseFactory
>     at rss.aws.engine.impl.DroolsEngine.setup(DroolsEngine.java:30)
>     at rss.aws.init.Core.init(Core.java:51)
>     at rss.aws.init.Core.getInstance(Core.java:16)
>     at rss.aws.init.Main.<init>(Main.java:35)
>     at rss.aws.init.Main.main(Main.java:191)
> Caused by: java.lang.ClassNotFoundException:
> org.drools.KnowledgeBaseFactory
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:264)
>     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:332)
>     ... 5 more
>
>  Any ideas?
> -W
>
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