[Hibernate] 分页查询

　　

    @Test
    public void test9(){
        //根据部门编号进行分组,再根据每个部门总工资＞5000
        Session ss=HibernateUtil.getSession();
        String hql="from Emp";

        //实现分页需要当前页面currentPageIndex
        int currentPageIndex=2;
        //每页显示的个数pageSize=5
        int pageSize=5;
        Query qr=ss.createQuery(hql);
        //方法里面出入开始记录数(currentPageIndex-1)*pageSize
        qr.setFirstResult((currentPageIndex-1)*pageSize);
        qr.setMaxResults(pageSize);

        List<Emp> el =qr.list();
        System.out.println(el.size());
        for (Emp emp : el) {
            System.out.println(emp);
        }
        HibernateUtil.closeResource(ss);
    }