Zookeeper入门

 1 package cn.fansunion.zookeeper;
 2 import org.apache.zookeeper.CreateMode;
 3 import org.apache.zookeeper.ZooDefs.Ids;
 4 import org.apache.zookeeper.ZooKeeper;
 5   
 6 public class ZooKeeperTest {
 7   
 8     private static final int TIME_OUT = 3000;
 9     private static final String HOST = "localhost:2181";
10     public static void main(String[] args) throws Exception{
11  
12  
13         ZooKeeper zookeeper = new ZooKeeper(HOST, TIME_OUT, null);
14         System.out.println("=========创建节点===========");
15         if(zookeeper.exists("/test", false) == null)
16         {
17             zookeeper.create("/test", "znode1".getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
18         }
19         System.out.println("=============查看节点是否安装成功===============");
20         System.out.println(new String(zookeeper.getData("/test", false, null)));
21          
22         System.out.println("=========修改节点的数据==========");
23         String data = "zNode2";
24         zookeeper.setData("/test", data.getBytes(), -1);
25          
26         System.out.println("========查看修改的节点是否成功=========");
27         System.out.println(new String(zookeeper.getData("/test", false, null)));
28          
29         System.out.println("=======删除节点==========");
30         zookeeper.delete("/test", -1);
31          
32         System.out.println("==========查看节点是否被删除============");
33         System.out.println("节点状态：" + zookeeper.exists("/test", false));
34          
35         zookeeper.close();
36     } 
37 }