add try catch

@@ -2,34 +2,42 @@ package com.yoho.search.service.recall.models.personal;
 
 import com.yoho.search.core.personalized.models.PersonalizedSearch;
 import org.apache.commons.lang.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.List;
 
 public class UserFeatureFactor {
 
+	private static final Logger logger = LoggerFactory.getLogger(UserFeatureFactor.class);
+
 	private List<Double> userFeatureVectorList = null;
 	private double userFeatureVectorNorm = 0.0D;
 	private String vectorFeatureVersion;
 
 	public UserFeatureFactor(PersonalizedSearch personalizedSearch) {
-		if (personalizedSearch == null) {
-			return;
-		}
-		this.vectorFeatureVersion = personalizedSearch.getVectorFeatureVersion();
-		String userVectorFeature = personalizedSearch.getUserVectorFeature();
-		if(StringUtils.isBlank(userVectorFeature)){
-			return;
-		}
-		String[] userFeatureFactorStrArr = userVectorFeature.split(",");
-		if(userFeatureFactorStrArr.length==0){
-			return;
-		}
-		userFeatureVectorList = new ArrayList<>(userFeatureFactorStrArr.length);
-		for (String userFeatureFactorStr : userFeatureFactorStrArr) {
-			double userFeatureVector = Double.parseDouble(userFeatureFactorStr.trim());
-			userFeatureVectorList.add(userFeatureVector);
-			userFeatureVectorNorm += userFeatureVector * userFeatureVector;
+		try {
+			if (personalizedSearch == null) {
+				return;
+			}
+			this.vectorFeatureVersion = personalizedSearch.getVectorFeatureVersion();
+			String userVectorFeature = personalizedSearch.getUserVectorFeature();
+			if(StringUtils.isBlank(userVectorFeature)){
+				return;
+			}
+			String[] userFeatureFactorStrArr = userVectorFeature.split(",");
+			if(userFeatureFactorStrArr.length==0){
+				return;
+			}
+			userFeatureVectorList = new ArrayList<>(userFeatureFactorStrArr.length);
+			for (String userFeatureFactorStr : userFeatureFactorStrArr) {
+				double userFeatureVector = Double.parseDouble(userFeatureFactorStr.trim());
+				userFeatureVectorList.add(userFeatureVector);
+				userFeatureVectorNorm += userFeatureVector * userFeatureVector;
+			}
+		}catch (Exception e){
+			logger.error(e.getMessage());
 		}
 	}