zookeeper初探三 java客户端连接

<dependencies>
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>zookeeper</artifactId>
        <version>3.3.1</version>
    </dependency>
</dependencies>

client.java

import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.ZooDefs;
import org.apache.zookeeper.ZooKeeper;

public class client {
    private static final int TIME_OUT = 3000;
    private static final String HOST = "localhost:2181";
    public static void main(String[] args) throws Exception{
        ZooKeeper zookeeper = new ZooKeeper(HOST, TIME_OUT, null);

        System.out.println("=========创建节点===========");
        if(zookeeper.exists("/zk", false) == null)
        {
            zookeeper.create("/zk", "zk data".getBytes(), ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
        }
        System.out.println("=============查看节点是否安装成功===============");
        System.out.println(new String(zookeeper.getData("/zk", false, null)));

        System.out.println("=========修改节点的数据==========");
        String data = "zNode2";
        zookeeper.setData("/zk", data.getBytes(), -1);

        System.out.println("========查看修改的节点是否成功=========");
        System.out.println(new String(zookeeper.getData("/zk", false, null)));

        System.out.println("=======删除节点==========");
        zookeeper.delete("/zk", -1);

        System.out.println("==========查看节点是否被删除============");
        System.out.println("节点状态：" + zookeeper.exists("/test", false));

        Thread.sleep(1000);
        zookeeper.close();
    }
}

zookeeper初探三 java客户端连接

原文：http://blog.51cto.com/antlove/2071141