根据分类查商品，一对多关系

public List getPtsByCateID(CategoryVO cate)
    {
        Transaction tx = null;
        List list =null;
        Session session = HibernateUtil.getSession();
        try {
            tx = session.beginTransaction();
            list =session.find("from ProductVO as p where p.cate="+cate.getId()+"");
            tx.commit();
        } catch (HibernateException ex) {
            ex.printStackTrace();
        }
        finally{
            if(tx !=null)
                try {
                    tx.rollback();
                } catch (HibernateException ex1) {
                }
            if(session !=null)
                try {
                    session.close();
                } catch (HibernateException ex2) {
                }
        }

        return list;
    }