[add] 空数据不更新

signal-utc-service/src/main/java/net/wanji/utc/task/SignalCommandSyncTask.java

@@ -105,7 +105,9 @@ public class SignalCommandSyncTask {
                 List<SignalCommandPO> sendList = new ArrayList<>();
                 sendList.addAll(insertList);
                 sendList.addAll(updateList);
-                sendAlarmKafka(sendList);
+                if (!CollectionUtils.isEmpty(sendList)) {
+                    sendAlarmKafka(sendList);
+                }
             } else {
                 log.error("从路口灯态缓存获取控制模式在线离线状态为空：{}", crossLightsStatusMap);
             }