fix sonar A "NullPointerException" could be thrown 2

xueyi-modules/xueyi-nlt/src/main/java/com/xueyi/nlt/nlt/controller/DmIntentController.java

@@ -548,6 +548,9 @@ public class DmIntentController extends BaseController<DmIntentQuery, DmIntentDt
     public AjaxResult getRecordList(MarkRecordVo recordVo) {
         // 获取缓存nlt:record:origin前十的列表
         Map<Object,Object> records = redisTemplate2.opsForHash().randomEntries("nlt:record:origin", 10);
+        if (records == null || records.isEmpty()) {
+            return AjaxResult.success("没有数据");
+        }
         List result = records.values().stream().toList();
 
         return AjaxResult.success(result);