sonar bug fixed

xueyi-common/xueyi-common-redis/src/main/java/com/xueyi/common/redis/utils/RedisUtil.java

@@ -37,7 +37,11 @@ public class RedisUtil {
     }
 
     public static List<JSONObject> getJsonList(String key) {
-        return redisTemplate.opsForList().range(key, 0, 10).stream().map(json-> JSONObject.parseObject(json.toString())).collect(Collectors.toList());
+        List<Serializable> lists = redisTemplate.opsForList().range(key, 0, 10);
+        if  (lists == null || lists.size() == 0) {
+            return null;
+        }
+        return lists.stream().map(json-> JSONObject.parseObject(json.toString())).collect(Collectors.toList());
     }
 
     public static List<Serializable> getList(String key) {