后台所有订单分页查询

 /**
     * backend后台分页查询所有订单
     * @param page
     * @param pageSize
     * @return
     */
    @GetMapping("/page")
    public R<Page<Orders>> allPage(Integer page, Integer pageSize, Long number, String beginTime, String endTime){
        log.info("number:{}, beginTime:{}, endTime:{}", number, beginTime, endTime);
        //构建分页构造器
        Page<Orders> pageInfo = new Page<>(page, pageSize);
        LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(number!=null, Orders::getId, number);
        queryWrapper.le(endTime!=null, Orders::getOrderTime, endTime);
        queryWrapper.ge(beginTime!=null, Orders::getOrderTime, beginTime);
        orderService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }