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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 2 posts ] 
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 Post subject: net.sf.hibernate.HibernateException: Session is closed
PostPosted: Thu Jul 01, 2004 5:22 am 
Newbie

Joined: Thu Jul 01, 2004 4:50 am
Posts: 2
Hi,

I've got the folllowing utility that provides my connection for my webapp with tomcat :

Code:
/*
* Created on 10 juin 2004
*
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
package com.interligo.front.util.bean;


import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.cfg.Configuration;

/**
* @author lordm
*
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
*/
public class HibernateUtil {

   private static final SessionFactory sessionFactory;

   static {
      try {
         // Create the SessionFactory
         sessionFactory = new Configuration().configure().buildSessionFactory();
      } catch (HibernateException ex) {
         throw new RuntimeException("Configuration problem: " + ex.getMessage(), ex);
      }
   }

   public static final ThreadLocal session = new ThreadLocal();

   public static Session currentSession() throws HibernateException {
      Session s = (Session) session.get();
      // Open a new Session, if this Thread has none yet
      if (s == null) {
         s = sessionFactory.openSession();
         session.set(s);
      }
      return s;
   }

   public static void closeSession() throws HibernateException {
      Session s = (Session) session.get();
      session.set(null);
      if (s != null)
         s.close();
   }
}


Randomly, I get this error :

Code:
<net.sf.hibernate.HibernateException: Session is closed>net.sf.hibernate.HibernateException: Session is closed
   at net.sf.hibernate.impl.SessionImpl.connection(SessionImpl.java:3288)
   at net.sf.hibernate.impl.BatcherImpl.prepareQueryStatement(BatcherImpl.java:65)
   at net.sf.hibernate.loader.Loader.prepareQueryStatement(Loader.java:704)
   at net.sf.hibernate.loader.Loader.doQuery(Loader.java:185)
   at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
   at net.sf.hibernate.loader.Loader.doList(Loader.java:955)
   at net.sf.hibernate.loader.Loader.list(Loader.java:946)
   at net.sf.hibernate.loader.CriteriaLoader.list(CriteriaLoader.java:121)
   at net.sf.hibernate.impl.SessionImpl.find(SessionImpl.java:3609)
   at net.sf.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:238)
   at com.interligo.front.action.FavorisAction.perform(FavorisAction.java:79)
   at org.apache.struts.action.Action.execute(Action.java:420)
   at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
   at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
   at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
   at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
   at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
   at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
   at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
   at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
   at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
   at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
   at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
   at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
   at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
   at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
   at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
   at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
   at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
   at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
   at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
   at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
   at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
   at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
   at java.lang.Thread.run(Unknown Source)


If I wait a little and reload my page, it works well ...

The code I use is the following :
Code:

Session session = HibernateUtil.currentSession();

         /**
         * Liste des favoris
         */

         Criteria criteria = session.createCriteria(Favoris.class);
         criteria.add(
            Expression.eq("matricule", user.getNonNullMetaData("MATRICULE")));
         List favorites = criteria.list();


I'm planning on using hibernate to build a bigger website but I can't do it since the problem is not solved :((


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 Post subject:
PostPosted: Thu Jul 01, 2004 5:36 am 
Hibernate Team
Hibernate Team

Joined: Thu Dec 18, 2003 9:55 am
Posts: 1977
Location: France
are you sure you 're using the servlet filter to attach/detach hibernate session from threadlocal?

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Anthony,
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