fix:修复一个参数导致的空指针问题

haoban-manage3-service/src/main/java/com/gic/haoban/manage/service/service/impl/WelcomeServiceImpl.java

@@ -139,6 +139,9 @@ public class WelcomeServiceImpl implements WelcomeService {
     }
 
     private void addWelcomeMedia(String welComeId, SaveWelcomeBO bo) {
+        if (CollectionUtils.isEmpty(bo.getMediaList())) {
+            return;
+        }
         List<TabHaobanWelcomeMedia> mediaList = bo.getMediaList().stream().map(one -> {
             TabHaobanWelcomeMedia media = new TabHaobanWelcomeMedia();
             media.setWelcomeMediaId(UniqueIdUtils.uniqueLong());