zookeeper测试代码

package com.sjt.test;

import java.util.List;
import java.util.concurrent.CountDownLatch;

import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.data.Stat;

public class TestZookeeper implements Watcher {
    private static CountDownLatch connectedSemaphore = new CountDownLatch(1);
    @Override
    public void process(WatchedEvent event) {

        System.out.println("Receive watched event : " + event);
        if (KeeperState.SyncConnected == event.getState()) {
            connectedSemaphore.countDown();
        }
        if (KeeperState.Disconnected == event.getState()) {
            System.out.println("zookeeper is disconnected.");
        }

    }

    public static void main(String[] args) {
        try {
            ZooKeeper zookeeper = new ZooKeeper("127.0.0.1:2181", 3000,
                    new TestZookeeper());
            connectedSemaphore.await();

            zookeeper.exists("/root", true);

            zookeeper.create("/root/clients", "".getBytes(),
                    Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL_SEQUENTIAL);

            List<String> nodes = zookeeper.getChildren("/root", true);
            System.out.println("" + nodes);

            byte[] data = zookeeper.getData("/root/clients",
                    new TestZookeeper(), new Stat());
            System.out.println(new String(data));
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}