public List<EpTaskStepHistory> listEpTaskStepHistory(String historyTaskId) { if (StringUtils.isBlank(historyTaskId)) { throw new BusinessException("id", ErrorCode.PARAMETER_NOT_FOUND); } EpTaskStepHistoryExample example = new EpTaskStepHistoryExample(); EpTaskStepHistoryExample.Criteria criteria = example.createCriteria(); criteria.andHistoryTaskIdEqualTo(historyTaskId); List<EpTaskStepHistory> list = epTaskStepHistoryDAO.selectByExample(example); return list; }