bugFix

long-article-recommend-service/src/main/java/com/tzld/longarticle/recommend/server/service/rank/RankService.java

@@ -101,7 +101,9 @@ public class RankService {
 
         // 次
         pool = contentMap.get(contentPools[1]);
-        pool.sort((o1, o2) -> -(o1.getCrawlerViewCount().compareTo(o2.getCrawlerViewCount())));
+        if (CollectionUtils.isNotEmpty(pool)) {
+            pool.sort((o1, o2) -> -(o1.getCrawlerViewCount().compareTo(o2.getCrawlerViewCount())));
+        }
         if (CollectionUtils.isNotEmpty(pool)) {
             result.add(pool.get(0));
             if (result.size() == 1 && pool.size() > 1) {