fix 品类列表页面

 package com.yoho.search.service.split.common;
 
+import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 
 import javax.annotation.PostConstruct;
 
+import org.apache.commons.collections.MapUtils;
 import org.apache.commons.lang.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -85,10 +88,49 @@ public class SplitProductListService extends BaseService {
 		dataMap.put("page_size", searchParam.getSize());
 		dataMap.put("page_total", searchResult.getTotalPage());
 		List<Map<String, Object>> product_list = productIndexBaseService.getProductListWithPricePlan(searchResult.getResultList(), null);
-		dataMap.put("product_list", product_list);// 处理一下商品的顺序
+		dataMap.put("product_list", this.moveProductListSort(paramMap, product_list));// 处理一下商品的顺序
 
 		// 6)将结果存进缓存
 		searchCacheService.addJSONObjectToCache(productListSearchCache, indexName, searchParam, dataMap);
 		return new SearchApiResult().setData(dataMap);
 	}
+
+	private List<Map<String, Object>> moveProductListSort(Map<String, String> paramMap, List<Map<String, Object>> product_list) {
+		// 判断页面合法性
+		if (!searchCommonHelper.isSortPageDefault(paramMap)) {
+			return product_list;
+		}
+		String page = paramMap.get("page");
+		if (StringUtils.isNotBlank(page) && !page.equals("1")) {
+			return product_list;
+		}
+		// 判断总数
+		int total = product_list.size();
+		if (total <= 10) {
+			return product_list;
+		}
+		// 计算均价
+		double totalPrice = 0;
+		for (Map<String, Object> product : product_list) {
+			totalPrice += MapUtils.getDoubleValue(product, "sales_price", 0);
+		}
+		double averagePrice = totalPrice / total;
+		List<Map<String, Object>> results = new ArrayList<Map<String, Object>>();
+		results.add(product_list.get(0));
+		product_list.remove(0);
+		Iterator<Map<String, Object>> iterator = product_list.iterator();
+		int moveCount = 0;
+		while (iterator.hasNext() && moveCount < 8) {
+			Map<String, Object> product = iterator.next();
+			if (MapUtils.getDoubleValue(product, "sales_price", 0) >= averagePrice) {
+				results.add(product);
+				moveCount++;
+				iterator.remove();
+			}
+		}
+		if (!product_list.isEmpty()) {
+			results.addAll(product_list);
+		}
+		return results;
+	}
 }