feat:修复空指针异常

recommend-server-service/src/main/java/com/tzld/piaoquan/recommend/server/service/recall/RecallService.java

@@ -109,7 +109,7 @@ public class RecallService implements ApplicationContextAware {
         strategies.add(strategyMap.get(SceneCFRovnRecallStrategy.class.getSimpleName()));
         strategies.add(strategyMap.get(SceneCFRosnRecallStrategy.class.getSimpleName()));
         Set<String> abExpCodes = param.getAbExpCodes();
-        if (abExpCodes.contains("568")){
+        if (CollectionUtils.isNotEmpty(abExpCodes) && abExpCodes.contains("568")) {
             strategies.remove(strategyMap.get(ReturnVideoRecallStrategy.class.getSimpleName()));
             strategies.add(strategyMap.get(RegionRealtimeRecallStrategyV7LongTermV1.class.getSimpleName()));
         }