添加 JedisPubSub import

src/main/java/com/jfinal/plugin/redis/Cache.java

@@ -27,6 +27,7 @@ import java.util.Set;
 import com.jfinal.plugin.redis.serializer.ISerializer;
 import redis.clients.jedis.Jedis;
 import redis.clients.jedis.JedisPool;
+import redis.clients.jedis.JedisPubSub;
 
 /**
  * Cache.