## 一、详细的执行记录 执行过程中，发生了任何需要记录下的信息，包括异常情况，都可以通过`StringBuilder errorMessage`参数来追加，这个参数通过`protected void doInRayPeriodJob(SysJobExecution sysjobexecution, StringBuilder errorMessage)`注入进来； ### **举例** ``` @Override protected void doInRayPeriodJob(SysJobExecution sysjobexecution, StringBuilder errorMessage) { List<CardSource> cardSourceList = cardSourceDao.getCardSourceList(); for (CardSource cardSource : cardSourceList) { try { ApiFacade.refreshApiResource(cardSource); } catch (Exception e) { errorMessage.append(ExceptionUtil.getFullStackTraceAsString(e)); } } } ```