解决循环引用反序列化，list返回null的问题

@@ -38,6 +38,23 @@ public class BigdataSimilarSknService {
     @Autowired
     private ProductIndexBaseService productIndexBaseService;
 
+    /**
+     * 获取非重复skn
+     * @param productSknStr
+     * @return
+     */
+    private List<String> getDistinctSknList(String productSknStr){
+        List<String> results = new ArrayList<>();
+        String [] productSkns = productSknStr.split(",");
+        for (String productSkn : productSkns){
+            if(!results.contains(productSkn) && StringUtils.isNumeric(productSkn)){
+                results.add(productSkn);
+            }
+        }
+        return results;
+    }
+
+
     @SearchCacheAble(cacheInMinute = 600, cacheName = "SEARCH_LIKE_NOT_IN_SHOP_SIMILAR", includeParams = { "product_skn", "viewNum" })
     public SearchApiResult searchLikeSimilarSknNotInShop(Map<String, String> paramMap) {
         try {
@@ -62,14 +79,14 @@ public class BigdataSimilarSknService {
             //5.1）图片[性别+不同店铺]
             List<String> diffShopImgSimilarSkns = new ArrayList<>();
             if (StringUtils.isNotEmpty(similarSkn.getDiffShopImgSimilarSkns())) {
-                diffShopImgSimilarSkns = CollectionUtils.arrayToList(similarSkn.getDiffShopImgSimilarSkns().split(","));
+                diffShopImgSimilarSkns = this.getDistinctSknList(similarSkn.getDiffShopImgSimilarSkns());
             }
             searchParams.add(this.builderSimilarSknSearchParam(productInfoInEs, diffShopImgSimilarSkns, true));
 
             //5.2）行为[性别+不同店铺+同品类]
             List<String> diffShopActionSimilarSkns = new ArrayList<>();
             if (StringUtils.isNotEmpty(similarSkn.getDiffShopActionSimilarSkns())) {
-                diffShopActionSimilarSkns = CollectionUtils.arrayToList(similarSkn.getDiffShopActionSimilarSkns().split(","));
+                diffShopActionSimilarSkns = this.getDistinctSknList(similarSkn.getDiffShopActionSimilarSkns());
             }
             searchParams.add(this.builderSimilarSknSearchParam(productInfoInEs, diffShopActionSimilarSkns, true));
 
@@ -115,7 +132,7 @@ public class BigdataSimilarSknService {
     }
 
     /**
-     * 按productSkn顺序截取商品条数
+     * 按productSkn顺序截取商品条数-注意循环引用的问题
      * @param esProductList
      * @param sortedProductSkns
      * @param size
@@ -137,7 +154,7 @@ public class BigdataSimilarSknService {
         });
         for (String productSkn : sortedProductSkns){
             if(productMap.containsKey(productSkn)){
-                results.add(productMap.get(productSkn));
+                results.add(new HashMap<>(productMap.get(productSkn)));//注意循环引用
             }
             if(results.size()>=size){
                 break;