zkclient操作zookeeper的代碼

執行main()看效果，使用zkCli查看節點內容：


import org.I0Itec.zkclient.IZkChildListener;
import org.I0Itec.zkclient.IZkDataListener;
import org.I0Itec.zkclient.ZkClient;

import java.util.List;
import java.util.concurrent.TimeUnit;

/**
 * 使用com.101tec.zkclient工具包，操作zookeeper
 */
public class ZkClinetTest {

//    private static String ZK_URL = "192.168.1.45:2181,192.168.1.46:2181,192.168.1.41:2181";//連接zookeeper集羣
    private static String ZK_URL = "localhost:2181";
    private static ZkClient zkClient = null;

    private static void getInstance() {
        if (null == zkClient) {
            zkClient = new ZkClient(ZK_URL, 10000);
        }
    }

    public static void main(String[] args) throws InterruptedException {
        getInstance();
        String path = "/node";
        //創建節點
        zkClient.createPersistent(path, "123");
        //讀取節點的值
        Object readData = zkClient.readData(path);
        System.out.println(readData.toString());

        zkClient.createEphemeral("/ephemeral");//創建臨時節點
        zkClient.createPersistent("/zkclient/zkclient1-1/zkclient2-1", true);//創建永久節點：添加參數true表示支持遞歸創建
        List<String> children = zkClient.getChildren(path);
        System.out.println(children);

        boolean delete1 = zkClient.deleteRecursive("/zkclient");
        if (delete1) {
            System.out.println("遞歸刪除成功！");
        }

        //watcher
        zkClient.subscribeDataChanges(path, new IZkDataListener() {
            public void handleDataChange(String s, Object o) throws Exception {
                System.out.println("節點名稱：" + s + "->節點修改後的值:" + o);
            }

            public void handleDataDeleted(String s) throws Exception {

            }
        });
        zkClient.subscribeChildChanges(path, new IZkChildListener() {
            public void handleChildChange(String s, List<String> list) throws Exception {
                System.out.println("節點名稱：" + s + "->子節點集合:" + list);
            }
        });
        //修改
        zkClient.writeData(path, "我把值修改啦！");
        TimeUnit.SECONDS.sleep(2);
        //新增子節點
        zkClient.createPersistent(path + "/node1", "node1");
        TimeUnit.SECONDS.sleep(2);
        //修改子節點的值
        zkClient.writeData(path + "/node1", "node1的值被修改啦！");
        TimeUnit.SECONDS.sleep(2);
        //刪除
        boolean delete = zkClient.deleteRecursive(path);
        if (delete) {
            System.out.println("刪除成功!");
        }
        TimeUnit.SECONDS.sleep(2);
    }
}