目标：实现一个zookeeper系统的znode数据迁移到另一个zookeeper系统。

代码如下：MoveZkNode.java

import java.util.List;

import org.apache.zookeeper.CreateMode;

import org.apache.zookeeper.KeeperException;

import org.apache.zookeeper.ZooKeeper;

import org.apache.zookeeper.ZooDefs.Ids;

public class MoveZkNode {

    public static void main(String[] args) throws Exception{

        //旧zookeeper系统

        ZooKeeper oldzk = new ZooKeeper("10.1.236.55:2181,10.1.236.56:2181,10.1.236.57:2181", 60000, null);

        //新zookeeper系统

        ZooKeeper newzk = new ZooKeeper("10.1.236.51:2181,10.1.236.58:2181,10.1.236.59:2181", 60000, null);

      //需要迁移的znode

       String node = "/hbase-unsecure";

        List<String> children = oldzk.getChildren(node, false);

        move(oldzk, newzk, children,node);

        oldzk.close();

        newzk.close();

    }

    public static void CreateZnode(ZooKeeper newzk,String str,String data ) {

          String result = null;

          try {

              result = newzk.create(str, data.getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);

          } catch (Exception e) {

              e.printStackTrace();

          }

          System.out.println("创建znode：" + result);

      }

    private static void move(ZooKeeper oldzk, ZooKeeper newzk, List<String> children,String parent)

            throws KeeperException, InterruptedException {

        if(children==null || children.isEmpty()){

            return;

        }else{

        if(newzk.exists(parent, false)==null){

          CreateZnode(newzk,parent,"null");

        }

            for(String child:children){

                String c = parent+"/"+child;

                System.out.println(c);

                byte[] data = oldzk.getData(c, false, null);

                if(newzk.exists(c, false)==null){

                    newzk.create(c, data, Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);

                }else{

                    newzk.setData(c, data, -1, null, null);

                }

                move(oldzk, newzk, oldzk.getChildren(c, false),c);

            }

        }

    }

}