opt:1.增加强制取消任务功能。2.优化未获取到数据时推送websocket空字段问题。

nl-business-schedule/src/main/java/org/nl/schedule/modular/vehicle/dto/VehicleInfoDto.java

@@ -32,17 +32,17 @@ public class VehicleInfoDto{
         /**
          * 电量
          */
-        private int batteryLevel;
+        private Integer batteryLevel;
 
         /**
          * 冰容量
          */
-        private int iceCapacity;
+        private Integer iceCapacity;
 
         /**
          * 水容量
          */
-        private int waterCapacity;
+        private Integer waterCapacity;
 
         /**
          * 信号类型
@@ -52,7 +52,7 @@ public class VehicleInfoDto{
         /**
          * 信号强度
          */
-        private int signalStrength;
+        private Integer signalStrength;
 
         /**
          * 异常信息编码

nl-business-schedule/src/main/java/org/nl/schedule/modular/vehicle/service/impl/VehicleServiceImpl.java

@@ -114,7 +114,7 @@ public class VehicleServiceImpl implements VehicleService {
     @Override
     public VehicleInfoDto getVehicleInfoByNumber(String vehicleNumber) {
         // 直接从缓存中获取
-        return vehicleCache.get(vehicleNumber);
+        return ObjectUtil.isEmpty(vehicleCache.get(vehicleNumber)) ? new VehicleInfoDto() : vehicleCache.get(vehicleNumber);
     }
 
     @Override