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Need help:Class not found when run the JBPM 5.3 progress in Jboss As 7 servertt

created by du feng in JBoss AS 7 Development - View the full discussion

I have designed a workflow process with JBPM 5.3 eclipse designer and planed to start this workflow in the session bean which was deployed in the Jboss 7.1.1 server.

The client application use JNDI to find the session bean and invoke the methods with the interface but the Jboss server can't find the JBPM related classes "org.drools.builder.KnowledgeBuilderFactory".

Should I add the JBPM as a extension module to Jboss server? or there is another way to configure the runtime enviorment in Jboss server to find the JBPM API class?Please give some gudiences on that. Thanks a lot.

The following is the soruce code and the reporting error from Jboss server.

//Remote interface

public interface SFWorkFlowOperation {

public boolean startWorkFlow(String WorkFlowBpmnName,String processID);

public void setWorkFlowTimer(int timeInterval);

}

//Stateless Session Bean which use the JBPM to start the special workflow instance.

import javax.ejb.Stateless;

import javax.ejb.Remote;

import org.drools.KnowledgeBase;

import org.drools.builder.KnowledgeBuilder;

import org.drools.builder.KnowledgeBuilderFactory;

import org.drools.builder.ResourceType;

import org.drools.io.ResourceFactory;

import org.drools.runtime.StatefulKnowledgeSession;

@Stateless

@Remote(SFWorkFlowOperation.class)

public class SFWorkFlowOperationBean implements SFWorkFlowOperation {

public boolean startWorkFlow(String WorkFlowBpmnName, String processID) {

KnowledgeBase kbase;

KnowledgeBuilder kbuilder;

try {

// load up the knowledge base

kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

kbuilder.add(ResourceFactory.newClassPathResource(WorkFlowBpmnName),

ResourceType.BPMN2);

kbase = kbuilder.newKnowledgeBase();

StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

// start a new process instance

ksession.startProcess(processID);

} catch (Exception e) {

e.printStackTrace();

return false;

}

return true;

}

public void setWorkFlowTimer(int timeInterval){

System.out.println("Set Timer Successfully!"+timeInterval);

}

//After deployed in the standalone Jboss server ,test main function to use the JNDI to look up the SFWorkFlowOperationBean to start the workflow

//There will be a error:

public class WorkFlowMain {

public static final void main(String[] args) throws Exception {

final String BPMNNAME = "ImageFormatConversion.bpmn";

final String PROCESSID = "com.astrium.sfv01.imageconversion";

final String INIT_FACTORY = "org.jboss.naming.remote.client.InitialContextFactory";

final String SERVER_URL = "remote://localhost:4447";

final String USERNAME = "dufeng";// Application Realm Authorization should be added user with adduser.sh

final String PASSWORD = "dufeng82";

Context context = null;

try {

Properties envset = new Properties();

envset.put(Context.INITIAL_CONTEXT_FACTORY, INIT_FACTORY);

envset.put(Context.PROVIDER_URL, SERVER_URL);

envset.put(Context.SECURITY_PRINCIPAL, USERNAME);

envset.put(Context.SECURITY_CREDENTIALS, PASSWORD);

envset.put("jboss.naming.client.ejb.context", true);

context = new InitialContext(envset);

} catch (NamingException e) {

e.printStackTrace();

}

SFWorkFlowOperation workflow = (SFWorkFlowOperation) context

.lookup("SFWorkFlow/SFWorkFlowOperationBean!com.astrium.sfv01.wamf.SFWorkFlowOperation");

workflow.startWorkFlow(BPMNNAME, PROCESSID);

}

//Jboss error reporting:

Exception in thread "main" javax.ejb.EJBException: Unexpected Error

at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:163)

at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:230)

at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:304)

at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:190)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ejb3.remote.EJBRemoteTransactionPropagatingInterceptor.processInvocation(EJBRemoteTransactionPropagatingInterceptor.java:80)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:43)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)

at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:165)

at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler.invokeMethod(MethodInvocationMessageHandler.java:302)

at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler.access$200(MethodInvocationMessageHandler.java:64)

at org.jboss.as.ejb3.remote.protocol.versionone.MethodInvocationMessageHandler$1.run(MethodInvocationMessageHandler.java:196)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)

at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)

at java.util.concurrent.FutureTask.run(FutureTask.java:138)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)

at java.lang.Thread.run(Thread.java:662)

at org.jboss.threads.JBossThread.run(JBossThread.java:122)

at ...asynchronous invocation...(Unknown Source)

at org.jboss.ejb.client.remoting.InvocationExceptionResponseHandler$MethodInvocationExceptionResultProducer.getResult(InvocationExceptionResponseHandler.java:99)

at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:270)

at org.jboss.ejb.client.TransactionInterceptor.handleInvocationResult(TransactionInterceptor.java:47)

at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:272)

at org.jboss.ejb.client.ReceiverInterceptor.handleInvocationResult(ReceiverInterceptor.java:132)

at org.jboss.ejb.client.EJBClientInvocationContext.getResult(EJBClientInvocationContext.java:260)

at org.jboss.ejb.client.EJBClientInvocationContext.awaitResponse(EJBClientInvocationContext.java:399)

at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:140)

at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:121)

at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:104)

at $Proxy0.startWorkFlow(Unknown Source)

at com.astrium.sfv01.wamf.WorkFlowMain.main(WorkFlowMain.java:46)

Caused by: java.lang.NoClassDefFoundError: org/drools/builder/KnowledgeBuilderFactory

at com.astrium.sfv01.impl.SFWorkFlowOperationBean.startWorkFlow(SFWorkFlowOperationBean.java:24)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)

at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)

at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51)

at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288)

at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:228)