基于JPA的分页/排序实现

 public ModelAndView showsignupclass(int page){
        ModelAndView mv=new ModelAndView("/user/user-showSignupClass.btl");
        Member member=memberRepository.findAll().get(0);
        int size=5; 

　　　　//按报名时间倒序
　　　　　Sort sort = new Sort(Sort.Direction.DESC,"time");

        PageRequest pageable=PageRequest.of(page,size,sort);
        Page<ClassOrder> pageObject=classOrderRepository.findByMember_MemberID(member.getMemberID(),pageable);
　　　　//获取pageObject的内容
        List<ClassOrder> classOrders=pageObject.getContent();
        //getTotalPages()返回总的页数
        int totalPage=pageObject.getTotalPages();
        //getTotalElements()返回总数
        long count=pageObject.getTotalElements();
        mv.addObject("count", count);
        mv.addObject("totalPage",totalPage);
        mv.addObject("classOrders",classOrders);
        return mv;
    }