电压质量接口缺陷修复

services/load-transfer-bf/src/main/java/com/hdkj/lt/bf/service/impl/SeIndicatorServiceImpl.java

@@ -650,7 +650,7 @@ public class SeIndicatorServiceImpl implements SeIndicatorService {
         qw.last("LIMIT 1");
         List<Map<String, Object>> records = voltageDailyMapper.selectMaps(qw);
         if (records != null && !records.isEmpty()) {
-            Object val = records.get(0).get("max_over_date");
+            Object val = Objects.nonNull(records.get(0))?records.get(0).get("max_over_date"):null;
             return val != null ? val.toString() : null;
         }
         return null;