curator操作zk节点

import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.common.extension.ExtensionLoader;
import com.alibaba.dubbo.registry.Registry;
import com.alibaba.dubbo.registry.RegistryFactory;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.apache.zookeeper.data.Stat;

CuratorFramework client = CuratorFrameworkFactory.builder().
                connectString("127.0.0.1:2181").  // 若配置集群则是 ip1:port, ip2:post, ip3:port(,隔开)
                        sessionTimeoutMs(5000).  // 超时，也是心跳时间
                        retryPolicy(new ExponentialBackoffRetry(1000, 3)). // 重试策略，初试时间为1s 重试3次
                        build();
        client.start(); // 启动  注：服务器防火墙端口要开放
        //新建节点，节点存在时不能新建
        //client.create().creatingParentsIfNeeded().withMode(CreateMode.PERSISTENT).forPath("/data/program", "test".getBytes());

        List<String> routers = client.getChildren().forPath("/dubbo/com.example.springboot_demo.service.UserService/routers");

        String res = URL.decode(URL.decode(routers.get(0)));

        Stat stat = client.checkExists().forPath("/dubbo/com.example.springboot_demo.service.UserService/routers");
        //不存在则返回null
        if(stat!=null){
            //删除节点
            client.delete().guaranteed().deletingChildrenIfNeeded().forPath("/dubbo/com.example.springboot_demo.service.UserService/routers/"+routers.get(0));
            //client.delete().forPath("/dubbo/com.example.springboot_demo.service.UserService/routers/"+routers.get(0));
        }
        //修改子节点
        //client.setData().forPath("/super/c2", "修改c2内容".getBytes());