fix: 水池液位趋势、CAFS水箱液位趋势-时间点未上报数据时则取上次上报的数据

amos-boot-module/amos-boot-module-biz/amos-boot-module-equip-biz/src/main/java/com/yeejoin/equipmanage/service/impl/EquipmentSpecificSerivceImpl.java

@@ -2583,6 +2583,7 @@ public class EquipmentSpecificSerivceImpl extends ServiceImpl<EquipmentSpecificM
             }
 
             List<Object> values = new ArrayList<>();
+            BigDecimal lastNum = BigDecimal.ZERO;
             for (int i = 0; i < allTimeList.size(); i++) {
                 List<BigDecimal> orDefault = stringIntegerHashMap.getOrDefault(allTimeList.get(i), new ArrayList<>());
                 // 计算非空值的总和
@@ -2597,12 +2598,13 @@ public class EquipmentSpecificSerivceImpl extends ServiceImpl<EquipmentSpecificM
                 BigDecimal divide;
                 if (count == 0) {
                     // 如果非空值数量为0，可以选择返回0或其他默认值
-                    divide = BigDecimal.ZERO;
+                    divide = lastNum;
                 } else {
                     // 否则，进行除法运算
                     divide = sum.divide(new BigDecimal(count), 2, RoundingMode.HALF_UP);
                 }
                 values.add(divide);
+                lastNum = divide.compareTo(BigDecimal.ZERO) == 0 ? lastNum : divide;
             }
             yaxisList.add(values);
         }