How to integrate hibernate and EJB (stateless session bean)

[vinoth subramaniam]

Hi all,
I am new to EJB. In my application we are using struts 2.0, EJB (2.0) stateless session bean, hibernate 3.0, Jboss(4.0.2) application server and eclipse IDE.

Can you Please tell me, how to call the hibernate from the stateless session bean. I am sure that there is no problem with the hibernate code.

1. How to integrate EJB stateless session bean and hibernate?
2. is there any need to configure jboss for this?

Previously i used to struts and hibenate, and its working fine. can you please clear my doubt. Thanks in advance.

[vinoth subramaniam]

this is the error i am getting

HTTP Status 500 -

--------------------------------------------------------------------------------

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.rmi.ServerError: Unexpected Error; nested exception is:
java.lang.NoClassDefFoundError: org/apache/commons/collections/SequencedHashMap
org.jboss.ejb.plugins.LogInterceptor.handleException(LogInterceptor.java:399)
org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:196)
org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:624)
org.jboss.ejb.Container.invoke(Container.java:873)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:585)
org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)
org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)
org.jboss.mx.server.Invocation.invoke(Invocation.java:72)
org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249)
org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)
org.jboss.invocation.local.LocalInvoker$MBeanServerAction.invoke(LocalInvoker.java:155)
org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:104)
org.jboss.invocation.InvokerInterceptor.invokeLocal(InvokerInterceptor.java:179)
org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:165)
org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:46)
org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:55)
org.jboss.proxy.ejb.StatelessSessionInterceptor.invoke(StatelessSessionInterceptor.java:97)
org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:86)
$Proxy99.GetPLANData(Unknown Source)
com.tcs.Nulamda.action.GetPlanDataAction.execute(GetPlanDataAction.java:24)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

I already put all the jars including common-collections3.2.1.jar, Hibernate3.jar, in the EJB project library. But still i am getting the error. What might be the reason? Please help me to solve this issue

[Paul Sturrock]

I already put all the jars including common-collections3.2.1.jar, Hibernate3.jar, in the EJB project library

What (or where) is the EJB project library? Have a read of the README.txt file that comes with Hibernate. It explains all the dependencies you need.