本地java连接并使用zookeeper

安全组端口具体打开端口的步骤，与这个类似https://blog.csdn.net/IAMZTDSF/article/details/123654734?spm=1001.2014.3001.5501

 
    org.apache.zookeeper
    zookeeper
    3.4.6

package zookeeper_demo;

import java.util.List;
import java.util.concurrent.CountDownLatch;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.data.Stat;



public class baseZookeeper implements Watcher{
 
   

   private static ZooKeeper zookeeper;

    
   private static final int SESSION_TIME_OUT = 2000;
   private CountDownLatch countDownLatch = new CountDownLatch(1);
   
   public void process(WatchedEvent event) {
      if (event.getState() == KeeperState.SyncConnected) {
         System.out.println("Watch received event");
         countDownLatch.countDown();
      }
   }



  
   
   public void connectZookeeper(String host) throws Exception{
      zookeeper = new ZooKeeper(host, SESSION_TIME_OUT, this);
      countDownLatch.await();
      System.out.println("zookeeper connection success");
   }
  
   
   public String createNode(String path,String data) throws Exception{
      return this.zookeeper.create(path, data.getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
   }
  
   
   public List getChildren(String path) throws KeeperException, InterruptedException{
      List children = zookeeper.getChildren(path, false);
      return children;
   }
  
   
   public String getData(String path) throws KeeperException, InterruptedException{
      byte[] data = zookeeper.getData(path, false, null);
      if (data == null) {
         return "";
      }
      return new String(data);
   }
  
   
   public Stat setData(String path,String data) throws KeeperException, InterruptedException{
      Stat stat = zookeeper.setData(path, data.getBytes(), -1);
      return stat;
   }
  
   
   public void deleteNode(String path) throws InterruptedException, KeeperException{
      zookeeper.delete(path, -1);
   }
  
   
   public String getCTime(String path) throws KeeperException, InterruptedException{
      Stat stat = zookeeper.exists(path, false);
      return String.valueOf(stat.getCtime());
   }
  
   
   public Integer getChildrenNum(String path) throws KeeperException, InterruptedException{
      int childenNum = zookeeper.getChildren(path, false).size();
      return childenNum;
   }
   
   public void closeConnection() throws InterruptedException{
      if (zookeeper != null) {
         zookeeper.close();
      }
   }
   public static void main(String[] args) throws Exception {
       baseZookeeper zookeeper = new baseZookeeper();
       zookeeper.connectZookeeper("192.168.126.128:2181");  //改端口
       List children = zookeeper.getChildren("/");
       System.out.println(children);
   }
}