车辆上报判断是否现成，否则会创建多余线程

src/main/java/com/muyu/service/impl/VehicleInstanceServiceImpl.java

@@ -141,8 +141,12 @@ public class VehicleInstanceServiceImpl implements VehicleInstanceService {
         VehicleInstance vehicleInstance = LocalContainer.getVehicleInstance(msgReq.getVin());
         switch (msgReq.getMsgCode()){
             case "上报" -> {
+                if(vehicleInstance.getVehicleThread() == null){
                     vehicleInstance.initVehicleThread();
                     vehicleInstance.startSend();
+                }else {
+                    vehicleInstance.pauseSend();
+                }
             }
             case "暂停" -> vehicleInstance.pauseSend();
             case "停止" -> vehicleInstance.stopSend();

src/main/java/com/muyu/vehicle/VehicleInstance.java

@@ -288,7 +288,7 @@ public class VehicleInstance {
 
     /**
      * 更改车辆档位
-     * @param d
+     * @param gear
      */
     public void setGear (String gear) {
         this.vehicleData.setGear(gear);