标签:exception sleep ati org set 删除 host defs mode
pom.xml<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(); } }
标签:exception sleep ati org set 删除 host defs mode
原文地址:http://blog.51cto.com/antlove/2071141