Re: [rules-users] Drools examples don't run

Are there any errors in addition to the NPE? The context of the stack-trace suggests the process definition being loaded is not on your classpath. 2010/10/21 赵侃侃 <kevin223(a)gmail.com&gt; Thanks Bruno, > > I have now fixed the NoClassDefFoundError, any ideas about the NullPointer > one? > > Best Regards, > Kevin Zhao > > 2010/10/20 Bruno Freudensprung <bruno.freudensprung(a)temis.com&gt; > >> >> Hello, >> >> I think you have to add the xstream jar to your classpath. >> Here is the Maven dependency : >> >> <dependency> >> <groupId>com.thoughtworks.xstream</groupId> >> <artifactId>xstream</artifactId> >> <version>1.3.1</version> >> </dependency> >> >> Best regards, >> >> Bruno. >> >> >> 赵侃侃 a écrit : >> >> Hello, >> >> I checked out the latest source from svn repository. It compiled OK and >> imported the example projects to my eclipse workspace but the examples run >> with error. >> The two example projects are namely drools-examples-drl >> & drools-examples-fusion. >> >> org.drools.examples.pacman.Main gives the errors: >> >> Exception in thread "main" java.lang.NoClassDefFoundError: >> com/thoughtworks/xstream/XStream >> at >> org.drools.audit.KnowledgeRuntimeLoggerProviderImpl.newThreadedFileLogger(KnowledgeRuntimeLoggerProviderImpl.java:34) >> at >> org.drools.logger.KnowledgeRuntimeLoggerFactory.newThreadedFileLogger(KnowledgeRuntimeLoggerFactory.java:69) >> at org.drools.examples.pacman.Main.initKsession(Main.java:88) >> at org.drools.examples.pacman.Main.main(Main.java:39) >> Caused by: java.lang.ClassNotFoundException: >> com.thoughtworks.xstream.XStream >> at java.net.URLClassLoader$1.run(Unknown Source) >> at java.security.AccessController.doPrivileged(Native Method) >> at java.net.URLClassLoader.findClass(Unknown Source) >> at java.lang.ClassLoader.loadClass(Unknown Source) >> at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) >> at java.lang.ClassLoader.loadClass(Unknown Source) >> ... 4 more >> >> >> org.drools.examples.broker.Main gives the errors: >> >> java.lang.NullPointerException >> at >> org.drools.compiler.PackageBuilder.addProcessFromXml(PackageBuilder.java:432) >> at >> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:468) >> at >> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28) >> at org.drools.examples.broker.Broker.loadRuleBase(Broker.java:95) >> at org.drools.examples.broker.Broker.createSession(Broker.java:80) >> at org.drools.examples.broker.Broker.<init>(Broker.java:57) >> at org.drools.examples.broker.Main.main(Main.java:53) >> >> Does anyone experience the similar issues and know how to fix that? >> >> Best Regards, >> Kevin >> >> ------------------------------ >> >> _______________________________________________ >> rules-users mailing listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users >> >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users