EasyExcel导出报串换一场的错误

错误提示：com.alibaba.fastjson.JSONObject cannot be cast to com.alibaba.excel.metadata.BaseRowModel
意思是在导出转换的过程中出错了

出错的代码：

 List<Object> objectList=ret.getRows();
                List<ExportYearMonthDto> exportYearMonthDtoList =null;
                if(CollectionUtils.isNotEmpty(objectList)){
                    exportYearMonthDtoList = (List<ExportYearMonthDto>) ret.getRows();
                }

修改过后的代码：

 List<ExportYearMonthDto> exportYearMonthDtoList =null;
                if(CollectionUtils.isNotEmpty(objectList)){
                    exportYearMonthDtoList = JSON.parseArray(JSON.toJSONString(objectList), ExportYearMonthDto.class);