could not initialize proxy - no Session - spring

Question

[ERROR] could not initialize proxy - no Session
org.hibernate.LazyInitializationException: could not initialize proxy - no Session
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:57)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:150)
at com.model.dto.Distination$$EnhancerByCGLIB$$f4a8517c.getLibileDis(<generated>)
at com.business.impl.MeteobussinesImpl.afficherMeteo1(MeteobussinesImpl.java:30)
at com.test.Tester.main(Tester.java:32)
[ERROR] could not initialize proxy - no Session
org.hibernate.LazyInitializationException: could not initialize proxy - no Session
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:57)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:111)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.invoke(CGLIBLazyInitializer.java:150)
at com.model.dto.Distination$$EnhancerByCGLIB$$f4a8517c.toString(<generated>)
at com.model.dto.Distination$$EnhancerByCGLIB$$f4a8517c.getLibileDis(<generated>)
at com.business.impl.MeteobussinesImpl.afficherMeteo1(MeteobussinesImpl.java:30)
at com.test.Tester.main(Tester.java:32)
1.class main
package com.test;
import java.util.Iterator;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.business.Meteobussines;
import com.business.impl.MeteobussinesImpl;
import com.model.vo.Meteo;
public class Tester {
static public void displayList(List list)
{ Iterator iter = list.iterator();
if (!iter.hasNext())
{ System.out.println("La lsite est vide"); return; }
while (iter.hasNext()) {
Meteo ct = (Meteo) iter.next();
System.out.println("tempsMax :" + ct.getTempMax() + " pays :" + ct.getLibilePays() + " distination :" + ct.getLibileDistination()); }}
public static void main(String[] args) {
// TODO Auto-generated method stub
String[] configArray = new String[] { "/com/resource/spring/ApplicationContext.xml",
"/com/resource/spring/ApplicationContextDao.xml","/com/resource/spring/ApplicationContextBusiness.xml"};
ApplicationContext ctx = new ClassPathXmlApplicationContext(configArray);
Meteobussines mete = (Meteobussines) ctx.getBean("MeteoBuss");
List<Meteo> m = mete.afficherMeteo1("tounes");
displayList(m);
}
}
2.Meteobussiness
package com.business.impl;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import com.business.Meteobussines;
import com.dao.HistoriqueDao;
import com.dao.impl.HistoriqueDaoImpl;
import com.model.dto.Historique;
import com.model.vo.Meteo;
public class MeteobussinesImpl implements Meteobussines {
HistoriqueDao historiqueDao ;
#SuppressWarnings("null")
#Override
public List<Meteo> afficherMeteo1(String pays) {
List<Historique> hiss= historiqueDao.rechercher(pays);
List<Meteo> m = new ArrayList<Meteo>(); ;
Iterator iter = hiss.iterator();
if (!iter.hasNext())
{ System.out.println("La lsite est vide"); }
while (iter.hasNext()) {
Historique ct = (Historique) iter.next();
Meteo me =new Meteo();
me.setDateHis(ct.getDateHis());
me.setLibileDistination(ct.getDistination().getLibileDis());
me.setLibilePays(ct.getPays().getLibilePays());
me.setLibileVille(ct.getVille().getLibileVille());
me.setTempMax(ct.getTempMax());
me.setTempMin(ct.getTempMin());
m.add(me);
}
return m;
// TODO Auto-generated method stub
}
#Override
public List<Meteo> afficherMeteo2(String pays, String ville) {
// TODO Auto-generated method stub
return null;
}
#Override
public List<Meteo> afficherMeteo3(String pays, String ville,
String distination) {
// TODO Auto-generated method stub
return null;
}
public HistoriqueDao getHistoriqueDao() {
return historiqueDao;
}
public void setHistoriqueDao(HistoriqueDao historiqueDao) {
this.historiqueDao = historiqueDao;
}
}
3.HistroiqueDaao
package com.dao.impl;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.FetchMode;
import org.hibernate.criterion.Expression;
import com.dao.HistoriqueDao;
import com.model.dto.Historique;
#SuppressWarnings("unchecked")
public class HistoriqueDaoImpl extends GenericDaoImpl implements HistoriqueDao {
#Override
public List<Historique> rechercher(String critere1, String critere2,
String critere3) {
Criteria crit = getSession().createCriteria(Historique.class);
crit.setFetchMode("pays", FetchMode.JOIN);
crit.createAlias("pays", "p");
crit.add(Expression.eq("p.libilePays", critere1));
crit.setFetchMode("ville", FetchMode.JOIN);
crit.createAlias("ville", "b");
crit.add(Expression.eq("b.libileVille", critere2));
crit.setFetchMode("distination", FetchMode.JOIN);
crit.createAlias("distination", "d");
crit.add(Expression.eq("d.libileDis", critere3));
List<Historique> his = crit.list();
return his;
}
#Override
public List<Historique> rechercher(String critere1, String critere2) {
// TODO Auto-generated method stub
Criteria crit = getSession().createCriteria(Historique.class);
crit.setFetchMode("pays", FetchMode.JOIN);
crit.createAlias("pays", "p");
crit.add(Expression.eq("p.libilePays", critere1));
crit.setFetchMode("ville", FetchMode.JOIN);
crit.createAlias("ville", "b");
crit.add(Expression.eq("b.libileVille", critere2));
List<Historique> his = crit.list();
return his;
}
#Override
public List<Historique> rechercher(String critere1) {
// TODO Auto-generated method stub
Criteria crit = getSession().createCriteria(Historique.class);
crit.setFetchMode("pays", FetchMode.JOIN);
crit.createAlias("pays", "p");
crit.add(Expression.eq("p.libilePays", critere1));
List<Historique> his = crit.list();
return his;
}
}
3.i use DaoSupport initialize in spring

Answer 1

The stack trace points to this line:
me.setLibileDistination(ct.getDistination().getLibileDis());
ct is a Historique proxy = a fake object whose fields (including the one you obtain through getDistination()) are not yet initiated.
Please initialize the fields you are interested in before committing the Hibernate transaction.
Hibernate.initialize(ct.getDistination());

Answer 2

crit.setFetchMode("pays", FetchMode.JOIN);
crit.setFetchMode("ville", FetchMode.JOIN);
crit.setFetchMode("distination", FetchMode.JOIN);
this the soultion of the problem cause i have in all the case to open the fetchmode.join