rankV5 次条random

long-article-recommend-service/src/main/java/com/tzld/longarticle/recommend/server/service/rank/strategy/RankV5Strategy.java

@@ -18,6 +18,7 @@ import com.tzld.longarticle.recommend.server.util.JSONUtils;
 import com.tzld.longarticle.recommend.server.util.TitleSimilarCheckUtil;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.RandomUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
@@ -104,10 +105,18 @@ public class RankV5Strategy implements RankStrategy {
         // 次
         List<Content> pool2 = contentMap.get(contentPools[1]);
         if (CollectionUtils.isNotEmpty(pool2)) {
-            result.add(pool2.get(0));
+            int i = RandomUtils.nextInt(0, Math.min(pool2.size(), 5));
+            int j = RandomUtils.nextInt(0, Math.min(pool2.size(), 5));
+            result.add(pool2.get(i));
             // 替补 头条内容不足使用次条内容
             if (result.size() == 1 && pool2.size() > 1) {
-                result.add(pool2.get(1));
+                while (i == j && pool2.size() > 1) {
+                    j = RandomUtils.nextInt(0, Math.min(pool2.size(), 5));
+                    if (i != j) {
+                        result.add(pool2.get(1));
+                        break;
+                    }
+                }
             }
         } else {
             // 替补 根据设置替补内容池查找内容尽心替补