List集合對象根據字段倒敘排序

訂單展示時展示2中狀態訂單並按創建訂單的時間倒敘排序

用java8性特性解決很簡單

   orderDTO.setStatus(BaseConstant.NEW_ORDER);
        List<OrderDTO> orders=orderMapper.selectAll(orderDTO);
        orderDTO.setStatus(BaseConstant.NOT_ACCEPT_STATUS);
        List<OrderDTO> order=orderMapper.selectAll(orderDTO);
        order.addAll(orders);
        List<OrderDTO> collect = order.stream().sorted(Comparator.comparing(OrderDTO::getOrderTime).reversed()).collect(Collectors.toList());