IPage<IotOldUser> pageList = iotOldUserService.page(page, queryWrapper);
if(CollectionUtils.isNotEmpty(pageList.getRecords())){
SimplePropertyPreFilter filter = new SimplePropertyPreFilter(IotOldUser.class, "id","name","cardNumber");
JSONArray jsonArray = JSONArray.parseArray(JSONObject.toJSONString(pageList.getRecords(),filter));
pageList.setRecords(jsonArray.toJavaList(IotOldUser.class));
}