导出试验时，判断样品列表是否为空

physical-module-system/physical-system-biz/src/main/java/org/jeecg/modules/database/controller/ExperimentController.java

@@ -464,6 +464,7 @@ public class ExperimentController extends JeecgController<Experiment, IExperimen
                     List<ExperimentSampleInfo> sampleInfoList = v.getSampleInfoList();
                     List<ExperimentDeviationEquipment> deviationEquipmentList = v.getDeviationEquipmentList();
                     List<ExperimentDeviationCondition> deviationConditionList = v.getDeviationConditionList();
+                    if (CollUtil.isNotEmpty(sampleInfoList)) {
                         for (int j = 0; j < sampleInfoList.size(); j++) {
                             ExperimentSampleInfo sampleInfo = sampleInfoList.get(j);
                             AnnealProcessExportDTO annealProcessExportDTO = new AnnealProcessExportDTO();
@@ -487,6 +488,7 @@ public class ExperimentController extends JeecgController<Experiment, IExperimen
                             annealProcessExportDTO.setAnnealEndTime(DateUtils.formatDate(v.getAnnealEndTime(), "yyyy-MM-dd HH:mm"));
                             annealProcessList.add(annealProcessExportDTO);
                         }
+                    }
                 });
             }