因查询不到接驳管理上按量导致的空指针

backend/xyst.dinas.production/src/main/java/com/xyst/dinas/production/internal/dao/DischargingDaoImpl.java

@@ -84,7 +84,7 @@ public class DischargingDaoImpl extends AbstractBaseDao implements DischargingDa
         List<HashMap<String, Object>> byCriteria = (List<HashMap<String, Object>>) template.findByCriteria(detachedCriteria);
         HashMap<String, Object> stringObjectHashMap = byCriteria.get(0);
         Object dischargingWeight = stringObjectHashMap.get("sumDischargingWeight");
-        return Double.valueOf(dischargingWeight.toString());
+        return Double.valueOf(Optional.ofNullable(dischargingWeight).orElse("0").toString());
 
     }