java客户端连接zookeeper集群时如何才能避开失效的服务器

怎么不好好看文档呢
》To create a client session the application code must provide a connection string containing a comma separated list of host:port pairs, each corresponding to a ZooKeeper server (e.g. "127.0.0.1:4545" or "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002"). The ZooKeeper client library will pick an arbitrary server and try to connect to it. If this connection fails, or if the client becomes disconnected from the server for any reason, the client will automatically try the next server in the list, until a connection is (re-)established.

另外你知道zk有个玩意叫watcher吗，自己检测连接也是逗

找到一个办法，由于zk的连接是异步创建的，可以在zookeeper对象new之后等待一下，同时判断state是否为connected，上代码：

if(!zk.getState().equals(States.CONNECTED)){
            while(true){
                if(zk.getState().equals(States.CONNECTED)){
                    break;
                }
                try {
                    TimeUnit.SECONDS.sleep(5);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }