ZooKeeper的示例代碼

<span style="font-size:18px;">import java.util.List;

import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.data.Stat;

/**
 * ZooKeeper用到的類是ZooKeeper
 * @Date 2015年3月5日
 * @Time 下午5:58:10
 * @author chaigy
 * @company emotte
 */
public class ZooKeepDeemo {
 public static void main(String[] args)throws Exception {
  System.out.println("沒有看到相應的代碼操作，估計是我看的視訊還不夠的意思，隻看到PPT裡面有代碼，我瞅瞅自己寫看看能不能成功");
  System.out.println("因為視訊裡面講的一般都比較簡單，現在還沒有上手去做，是以我也就寫幾個簡單的demo了 ");
  //第一個參數是主機IP或者主機名  第二個參數是逾時時間  第三個參數是 監聽
  ZooKeeper zooKeeper = new ZooKeeper("chaigy", 5000, new Watcher() {
   public void process(WatchedEvent event) {
    System.out.println("lalal"+event.getType()+event.getPath());
   }
  });
 
  //我都不曉得這些設定是什麼玩意   第一個是要建的檔案，第二個是資料，第三個曉不曉得  第四個是建立的形式
  //Znode有四種形式的目錄節點，PERSISTENT、PERSISTENT_SEQUENTIAL、EPHEMERAL、EPHEMERAL_SEQUENTIAL
  //添加
  //createZnode(zooKeeper);
  //擷取
  //getData(zooKeeper);
  //删除
  //zooKeeper.delete("/chaigy4", 0);
  //修改
  //zooKeeper.setData("/chaigy2", "嗚嗚嗚嗚".getBytes(), 0);
  //findAll(zooKeeper);
  System.out.println(zooKeeper.getChildren("/", true));
 
 }

 private static void findAll(ZooKeeper zooKeeper) throws KeeperException,
   InterruptedException {
  List<String> children = zooKeeper.getChildren("/", true);
  for (String string : children) {
   System.out.println(string+"********");
  }
 }

 private static void getData(ZooKeeper zooKeeper) throws KeeperException,
   InterruptedException {
  Stat stat = new Stat();
  byte[] data = zooKeeper.getData("/chaigy4", true, stat);
  System.out.println(new String(data));
 }

 private static void createZnode(ZooKeeper zooKeeper)
   throws KeeperException, InterruptedException {
  zooKeeper.create("/chaigy4", "nihao".getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
 }
}</span>