zookeeper异步创建节点

zookeper 移步创建节点

    

  rc状态说明：

     0:接口调用成功

     －4：服务端和客户端断开链接

     －110：几点已经存在

     －112:会话已经过期

package com.chongshi.test;

import java.io.IOException;

import java.util.concurrent.CountDownLatch;

import org.apache.zookeeper.CreateMode;

import org.apache.zookeeper.KeeperException;

import org.apache.zookeeper.WatchedEvent;

import org.apache.zookeeper.Watcher;

import org.apache.zookeeper.AsyncCallback.StringCallback;

import org.apache.zookeeper.Watcher.Event.KeeperState;

import org.apache.zookeeper.ZooDefs.Ids;

import org.apache.zookeeper.ZooKeeper;

import org.w3c.dom.ProcessingInstruction;

public class ZKTest {

static ZooKeeper zk = null;

static CountDownLatch cdl = new CountDownLatch(1);

static CountDownLatch cdl1 = new CountDownLatch(1);

static {

try {

zk = new ZooKeeper("127.0.0.1:2181", 1000, new MyWatcher(cdl));

} catch (IOException e) {

e.printStackTrace();

}

}

public static void main(String[] args) throws KeeperException {

try {

cdl.await();

} catch (InterruptedException e1) {

e1.printStackTrace();

}

zk.create("/s1", "test".getBytes(), Ids.OPEN_ACL_UNSAFE,

CreateMode.PERSISTENT, new MyStringCallback(cdl1),

"Hello World");

try {

cdl1.await();

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

class MyStringCallback implements StringCallback {

private CountDownLatch countDownLatch;

public MyStringCallback(CountDownLatch countDownLatch) {

this.countDownLatch = countDownLatch;

}

public void processResult(int rc, String path, Object ctx, String name) {

System.err.println(rc);

countDownLatch.countDown();

}

}

class MyWatcher implements Watcher {

private CountDownLatch countDownLatch;

public MyWatcher(CountDownLatch countDownLatch) {

this.countDownLatch = countDownLatch;

}

public void process(WatchedEvent event) {

if (event.getState() == KeeperState.SyncConnected) {

System.err.println("连接上");

countDownLatch.countDown();

}

}

}