int page=2;//分页页码
		 int size=2;//列数
		 List<User> users=session.createQuery("select a from User a")
		 .setFirstResult((page-1)*size)//起始条数 start end
		 .setMaxResults(size)//列数
		 .list();
		 //select * from user limit 0,2 起始条数,列数
		 for (User user : users) {
		 System.out.println(user.getUserId() + "---" + user.getUserName());
		 }