休眠错误，当我尝试删除

Question

我有一个数据表，其中包含我所有的对象，制造商“制造商”列表和两个按钮：更新和删除。

public class FabricantService { 

private FabricantHome dao ; 
Session sesion ; 
List<Fabricant> list; 

    public FabricantService() { 
     super(); 
     dao = new FabricantHome(); 
    } 



    public void ajouter(Fabricant cart) { 

     sesion=HibernateUtil.getSessionFactory().getCurrentSession(); 
     sesion.beginTransaction(); 
     dao.persist(cart); 
     sesion.getTransaction().commit(); 
       } 



    public void update(Fabricant cart) { 
      sesion=HibernateUtil.getSessionFactory().getCurrentSession(); 
      sesion.beginTransaction(); 
      dao.merge(cart); 
      sesion.getTransaction().commit(); 
    } 


    public void deletee (Fabricant cart) { 
     sesion=HibernateUtil.getSessionFactory().getCurrentSession(); 
     sesion.beginTransaction(); 
     dao.delete(cart); 
     sesion.getTransaction().commit();      
} 

public List<Fabricant> list(){ 
    sesion=HibernateUtil.getSessionFactory().getCurrentSession(); 
    sesion.beginTransaction(); 
    list=dao.findAll() ; 
    return list; 

    } 


} 

更新OK它是好的重定向我在页面上更新一个制造商。

，但是当我选择删除此显示了一个这样的错误：

Caused by: javax.faces.el.EvaluationException: 
    org.hibernate.HibernateException: 
     Illegal attempt to associate a collection with two open sessions 
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)  
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) 
    ... 23 more 

Answer 1

提交关闭会话后。