1、用印流程信息印章为空时，返回空集合

yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/oa/stamp/OaStampServiceImpl.java

@@ -515,6 +515,8 @@ public class OaStampServiceImpl implements OaStampService {
             String[] stampSealIdArray = stampSealId.split(",");
             List<Long> stampSealIdList = Arrays.stream(stampSealIdArray).map(Long::valueOf).collect(Collectors.toList());
             oaStampRespVO.setStampSealId(stampSealIdList);
+        } else {
+            oaStampRespVO.setStampSealId(Collections.emptyList());
         }
 
         String procInstId = oaStampDO.getProcInstId();
@@ -582,6 +584,8 @@ public class OaStampServiceImpl implements OaStampService {
             String[] stampSealIdArray = stampSealId.split(",");
             List<Long> stampSealIdList = Arrays.stream(stampSealIdArray).map(Long::valueOf).collect(Collectors.toList());
             oaStampRespVO.setStampSealId(stampSealIdList);
+        } else {
+            oaStampRespVO.setStampSealId(Collections.emptyList());
         }
 
         // 附件列表