fix Collections.sort

@@ -3,6 +3,7 @@ package com.yoho.search.service.recall;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
 
@@ -180,15 +181,20 @@ public class CommonSceneProductListService {
 		List<String> firstProductSkns = Arrays.asList(MapUtils.getString(paramMap, SearchRequestParams.PARAM_SEARCH_FIRST_PRODUCRSKN, "").split(","));
 		for (CommonRecallSkn commonRecallSkn : commonRecallResult.getRecallSknList()) {
 			if (firstProductSkns.contains(String.valueOf(commonRecallSkn.getProductSkn()))) {
-				commonRecallSkn.setScore(10000);// firstSkn排第一个
+				commonRecallSkn.setScore(10000d);// firstSkn排第一个
 			} else {
 				commonRecallSkn.setScore(productFeatureFactorHepler.calProductFeatureFactor(userFeatureFactor, commonRecallSkn.getProductFeatureFactor()));
 			}
 		}
-		Collections.sort(commonRecallResult.getRecallSknList());
+		Collections.sort(commonRecallResult.getRecallSknList(),new Comparator<CommonRecallSkn>() {  
+		    @Override  
+		    public int compare(CommonRecallSkn o1, CommonRecallSkn o2) {  
+		       return o2.getScore().compareTo(o1.getScore());//大的排前面
+		    }
+		});
 		return commonRecallResult;
 	}
-
+	
 	/**
 	 * 非个性化的列表接口-去除uid缓存
 	 * 

@@ -2,7 +2,7 @@ package com.yoho.search.service.recall.model;
 
 import java.io.Serializable;
 
-public class CommonRecallSkn implements Comparable<CommonRecallSkn>,Serializable {
+public class CommonRecallSkn implements Serializable {
 
 	private static final long serialVersionUID = -6820037942157341237L;
 	
@@ -10,7 +10,7 @@ public class CommonRecallSkn implements Comparable<CommonRecallSkn>,Serializable
 	private int brandId;
 	private int smallSortId;
 	private String productFeatureFactor;
-	private double score;
+	private Double score;
 
 	public int getProductSkn() {
 		return productSkn;
@@ -44,23 +44,12 @@ public class CommonRecallSkn implements Comparable<CommonRecallSkn>,Serializable
 		this.productFeatureFactor = productFeatureFactor;
 	}
 
-	public double score() {
+	public Double getScore() {
 		return score;
 	}
-
-	public void setScore(double score) {
+	
+	public void setScore(Double score) {
 		this.score = score;
 	}
-
-	@Override
-	public int compareTo(CommonRecallSkn old) {
-		double c = score - old.score;
-		if(c>0){
-			return -1;
-		}
-		if(c<0){
-			return 1;
-		}
-		return 0;
-	}
+	
 }