空指针修改

haoban-manage3-service/src/main/java/com/gic/haoban/manage/service/context/chat/JoinRuleManager.java

@@ -189,6 +189,9 @@ public class JoinRuleManager {
         FunctionWithException<GroupChatActivityHmQDTO, List<GroupChatHmBO>> handler = ruleHandlers.get(ruleEnum);
         if (handler != null) {
             List<GroupChatHmBO> apply = handler.apply(activityHmQDTO);
+            if (apply == null) {
+                apply = new ArrayList<>();
+            }
             logger.info("规则:{},获取活码数:{}", ruleEnum.desc, apply.size());
             return apply;
         }