|  | @@ -88,7 +88,8 @@ public class PredictModelServiceImpl implements PredictModelService {
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				|  |  |              midGroup = "mean_group";
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				|  |  |          }
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				|  |  |  
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				|  |  | -        String[] noAdMidGroupList=(String[]) ((JSONArray) abtestParam.get("no_ad_mid_group_list")).toArray();
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				|  |  | +        String[] noAdMidGroupList=new String[0];
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				|  |  | +        noAdMidGroupList=((JSONArray) abtestParam.get("no_ad_mid_group_list")).toArray(noAdMidGroupList);
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				|  |  |  
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				|  |  |          boolean inNoAdGroup = false;
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				|  |  |          for (String group : noAdMidGroupList) {
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				|  | @@ -106,8 +107,8 @@ public class PredictModelServiceImpl implements PredictModelService {
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				|  |  |              return result;
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				|  |  |          }
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				|  |  |  
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				|  |  | -        String[] noAdGroupWithVideoMapping=(String[]) ((JSONArray) abtestParam.get("no_ad_mid_group_list")).toArray();
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				|  |  | -
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				|  |  | +        String[] noAdGroupWithVideoMapping=new String[0];
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				|  |  | +        noAdGroupWithVideoMapping=((JSONArray) abtestParam.get("no_ad_mid_group_list")).toArray(noAdMidGroupList);
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				|  |  |  
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				|  |  |  
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				|  |  |          //设置信息
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