[jboss-user] [jBPM] - IllegalArgumentException: Unable to instantiate service for Class 'org.drools.compiler.BPMN2ProcessProvider'

[mutou wang]

mutou wang [https://community.jboss.org/people/mutou] created the discussion

"IllegalArgumentException: Unable to instantiate service for Class 'org.drools.compiler.BPMN2ProcessProvider'"

To view the discussion, visit: https://community.jboss.org/message/737590#737590

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Hello, everyone!
When I was running the java sentences:

     KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
     kbuilder.add(ResourceFactory.newFileResource(filename), ResourceType.BPMN2);

the second line throws a IIIlegalArgumentException like this:
java.lang.IllegalArgumentException: Unable to instantiate service for Class 'org.drools.compiler.BPMN2ProcessProvider' at org.drools.util.ServiceRegistryImpl.get(ServiceRegistryImpl.java:161) 
at org.drools.compiler.BPMN2ProcessFactory.loadProvider(BPMN2ProcessFactory.java:29) 
at org.drools.compiler.BPMN2ProcessFactory.getBPMN2ProcessProvider(BPMN2ProcessFactory.java:21) 
at org.drools.compiler.BPMN2ProcessFactory.configurePackageBuilder(BPMN2ProcessFactory.java:12) 
at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:607)
 at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:37) 
at org.thgrid.robinia.executor.impl.JbpmInstance.readKnowledgeBase(JbpmInstance.java:85)
 at org.thgrid.robinia.executor.impl.JbpmInstance.doIt(JbpmInstance.java:64)
 at org.thgrid.robinia.executor.impl.AbstractInstance.run(AbstractInstance.java:154) 
at org.thgrid.robinia.event.CallbackEventHandler.handle(CallbackEventHandler.java:11)
 at org.thgrid.robinia.event.EventProcessThread.handleEvent(EventCenter.java:67) 
at org.thgrid.robinia.event.EventProcessThread.run(EventCenter.java:45)
 Caused by: java.lang.IllegalArgumentException: Unable to instantiate 'org.jbpm.bpmn2.BPMN2ProcessProviderImpl' at org.drools.util.ServiceRegistryImpl$ReflectionInstantiator.newInstance(ServiceRegistryImpl.java:210)
 at org.drools.util.ServiceRegistryImpl$ReflectionInstantiator.call(ServiceRegistryImpl.java:202) 
at org.drools.util.ServiceRegistryImpl.get(ServiceRegistryImpl.java:159) 
... 11 more 
Caused by: java.lang.ClassNotFoundException: org.jbpm.bpmn2.BPMN2ProcessProviderImpl at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) 
at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) 
at org.drools.util.ServiceRegistryImpl$ReflectionInstantiator.newInstance(ServiceRegistryImpl.java:207) ... 13 more

I debuged this program for days and search the Internet for solutions, but in vain.
How could this Exceptions happen?
And What should I do to solve this problem??
Thank you!!
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