[update] 快速特勤，车辆位置推送WebSocket判空

signal-control-service/src/main/java/net/wanji/web/kafka/ConsumerHandler.java

 package net.wanji.web.kafka;
 
+import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.util.StrUtil;
 import com.alibaba.fastjson.JSONObject;
 import lombok.NonNull;
@@ -136,8 +137,10 @@ public class ConsumerHandler implements KafkaListenerErrorHandler {
                                 // 给前端推送WebSocket
                                 Set<WebSocketServer> events =
                                         WebSocketServer.getWebSocketSet(Constant.WEBSOCKET_AUTO_UNLOCK);
-                                for (WebSocketServer socketServer : events) {
-                                    socketServer.sendMessage(crossId);
+                                if (CollectionUtil.isNotEmpty(events)) {
+                                    for (WebSocketServer socketServer : events) {
+                                        socketServer.sendMessage(crossId);
+                                    }
                                 }
                             }
                         }

signal-control-service/src/main/java/net/wanji/web/task/RealTimeCarTask.java

 package net.wanji.web.task;
 
+import cn.hutool.core.collection.CollectionUtil;
 import com.alibaba.fastjson.JSONObject;
 import lombok.AllArgsConstructor;
 import lombok.Data;
@@ -46,6 +47,9 @@ public class RealTimeCarTask {
     public void pushRealTimeCarInfo() {
         try {
             Set<WebSocketServer> events = WebSocketServer.getWebSocketSet(Constant.WEBSOCKET_TOPIC_CAR_TRAIL_INFO);
+            if (CollectionUtil.isEmpty(events)) {
+                return;
+            }
             for (WebSocketServer socketServer : events) {
                 String picLicense = socketServer.getUserId();
                 JNMatchResultMiniData jnMatchResultMiniData = consumerHandler.getTopicMessage("CSMatchResultMiniData_0");