Exception in thread "main" org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /test

     at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)

     at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)

     at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)

     at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1069)

     at cn.zhang.bigdata.zk.ZooKeeperTest.main(ZooKeeperTest.java:11)

 1、连接还没有创建完成，就操作节点就会报异常？（最多，而且千篇一律，都一样）

 2、用最新的jar试一下？（试了不好用）

 3、防火墙没有关闭？（我的已经关闭）

 // 将时间改为 15秒，即可

  ZooKeeper zk = new ZooKeeper("10.0.0.11:2181", 15000, null);