HibernateSessionFactory 工具类

java 代码

public   class  HibernateSessionFactory {
     private   static  String CONFIG_FILE_LOCATION =  "/hibernate.cfg.xml" ;
     private   static   final  ThreadLocal threadLocal =  new  ThreadLocal();
     private   static   final  Configuration cfg =  new  Configuration();
     private   static  org.hibernate.SessionFactory sessionFactory;
     public   static  Session currentSession()  throws  HibernateException {
        Session session = (Session) threadLocal.get();
         if  (session ==  null  || !session.isOpen()) {
             if  (sessionFactory ==  null ) {
                 try  {
                    cfg.configure(CONFIG_FILE_LOCATION);
                    sessionFactory = cfg.buildSessionFactory();
                }  catch  (Exception e) {
System.err.println( "%%%% Error Creating SessionFactory %%%%" );
                    e.printStackTrace();
                }
            }
session = (sessionFactory !=  null ) ? sessionFactory.openSession():  null ;
            threadLocal.set(session);
        }
         return  session;
    }
     public   static   void  closeSession()  throws  HibernateException {
        Session session = (Session) threadLocal.get();
        threadLocal.set( null );
         if  (session !=  null ) {
            session.close();
        }
    }
     private  HibernateSessionFactory() {
    }
}

java 代码

public   class  DAOTool {
     public  Object load (Object object,Integer id) {
        Session session = HibernateSessionFactory.currentSession();
         return  session.load(object. class , id);
    }
     public  Object get (Object object ,Integer id) {
        Session session = HibernateSessionFactory.currentSession();
         return  session.get(object. class , id);
    }
     public  List find(String hql) {
        Session session = HibernateSessionFactory.currentSession();
         return  session.createQuery(hql).list();
    }
     public  Serializable save (Object obj) {
        Session session = HibernateSessionFactory.currentSession();
         return  session.save(obj);
    }
     public   void  update(Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.update(obj);
    }
     public   void  update(String hql, Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.update(hql, obj);
    }
     public   void  delete(Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.delete(obj);
    }
     public   void  delete(String hql, Object obj) {
        Session session = HibernateSessionFactory.currentSession();
        session.delete(hql, obj);
    }
}