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 }