大家帮帮忙啦

看书看书
孙卫琴《精通Hibernate：Java对象持久化技术详解》
还可以参考Hibernate3.2官方中文参考手册

给你一个类子吧！如果用example是不是更好啊！
public Collection findOrdersByCriteria(Order order)
    {
        Session session = null;
        Transaction trans = null;
        Collection orders = null;

        try
        {
            session = HibernateUtil.getSession();
            trans = session.beginTransaction();
            Criteria crit = session.createCriteria(Order.class);
            if(order.getNo() != null)
            {
                crit.add(Restrictions.eq("no", order.getNo()));
            }
            
            if(order.getOwner() != null)
            {
                crit.add(Restrictions.eq("owner", order.getOwner()));
            }
            
            if(order.getSendDate() != null)
            {
                crit.add(Restrictions.eq("sendDate", order.getSendDate()));
            }
            orders = crit.list();
            trans.commit();
        } catch (Exception e)
        {
            e.printStackTrace();
            trans.rollback();
        } finally
        {
            session.close();
        }

        return orders;
    }

例子是不错，可是比较需要api,hibernate自带的太简单了