jbpm3.2+ springmodules3.1 session closed ,why?anyone can hel

[yuyanshan]

 org.hibernate.SessionException: Session is closed!
 at org.hibernate.impl.AbstractSessionImpl.errorIfClosed(AbstractSessionImpl.java:49)
 at org.hibernate.impl.SessionImpl.getNamedQuery(SessionImpl.java:1258)
 at org.jbpm.db.GraphSession.findLatestProcessDefinition(GraphSession.java:153)
 at com.logansoft.firstFlow.service.impl.JbpmServiceImpl.initJbpm(JbpmServiceImpl.java:128)
 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.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
 at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
 at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
 at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)

here the problem

if (isCurrentSessionEnabled) {
 session = getSessionFactory().getCurrentSession();
 log.debug("using current hibernate session " + session);
 mustSessionBeClosed = false;
 mustSessionBeFlushed = false;
 mustConnectionBeClosed = false;
 } else if (connection!=null) {
 log.debug("creating hibernate session with connection "+connection);
 session = getSessionFactory().openSession(connection);
 mustSessionBeClosed = true;
 mustSessionBeFlushed = true;
 mustConnectionBeClosed = false;
 } else {
 log.debug("creating hibernate session");
 session = getSessionFactory().openSession();
 mustSessionBeClosed = true;
 mustSessionBeFlushed = true;
 mustConnectionBeClosed = false;
 }
 if (isTransactionEnabled) {
 beginTransaction();
 }

if i change above code to this , the problem solved

if (isCurrentSessionEnabled) {
og.debug("creating hibernate session");

 session = getSessionFactory().openSession();
 mustSessionBeClosed = true;
 mustSessionBeFlushed = true;
 mustConnectionBeClosed = false;
 }
 if (isTransactionEnabled) {
 beginTransaction();

who can answer my question?