fix CollectionUtils name

@@ -40,6 +40,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.ApplicationEventPublisherAware;
 import org.springframework.stereotype.Service;
+import org.springframework.util.CollectionUtils;
 
 import javax.annotation.PostConstruct;
 
@@ -232,11 +233,11 @@ public class AggProductListService implements ApplicationEventPublisherAware {
 
 	private JSONObject queryProductList(BrandProductResponse response, int totalViewNum) {
 		List<Map<String, Object>> productList = new ArrayList<>();
-		if (response != null && !org.springframework.util.CollectionUtils.isEmpty(response.getProductList())) {
+		if (response != null && !CollectionUtils.isEmpty(response.getProductList())) {
 			//3、获取召回结果的skn
 			List<Integer> productSknList = response.getProductList().stream().map(BrandProduct::getProductSkn).collect(Collectors.toList());
 			//4、获取商品的返回信息
-			if (!org.springframework.util.CollectionUtils.isEmpty(productSknList)) {
+			if (!CollectionUtils.isEmpty(productSknList)) {
 				long begin = System.currentTimeMillis();
 				productList = sknReturnInfoCacheBean.queryProductListBySkn(productSknList, productSknList.size());
 				logger.info("AggBrandProductListService.queryProductListBySkn,cost is [{}]", System.currentTimeMillis() - begin);