项目中通过openid来查买家订单主表,那么多的话就的考虑分页显示了
public interface OrderMasterRepository extends JpaRepository<OrderMaster, String> { // 根据openid来查询一条条的OrdeMaster以分页显示出来 Page<OrderMaster> findByBuyerOpenid(String buyerOpenid, Pageable pageable); }
注意:在单元测试的时候、分页是从第0也开始的~
显示时,有三个参数,前两个必填,第几页,一页多少个size,第三个参数默认可以不填。
但是发现这个方法已经过时了,通过查看它的源码发现,新方法为静态方法PageRequest of(page,size)
使用PageImpl进行分页:
@Override public Page<OrderDTO> findList(String buyerOpenid, Pageable pageable) { Page<OrderMaster> orderMasterPage = orderMasterRepository.findByBuyerOpenid(buyerOpenid, pageable); List<OrderDTO> orderDTOList = OrderMaster2OrderDTOConverter.convert(orderMasterPage.getContent()); //TODO pageable return new PageImpl<OrderDTO>(orderDTOList, pageable, orderMasterPage.getTotalElements()); }