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通过ZooKeeper客户端工具或ZooKeeper提供的API,可以创建节点。下面是使用Java API创建节点的示例:
import org.apache.zookeeper.CreateMode; import org.apache.zookeeper.ZooDefs.Ids; import org.apache.zookeeper.ZooKeeper; public class CreateNodeExample { public static void main(String[] args) throws Exception { String host = "localhost:2181"; int sessionTimeout = 3000; ZooKeeper zooKeeper = new ZooKeeper(host, sessionTimeout, null); String path = "/myNode"; byte[] data = "Hello, ZooKeeper!".getBytes(); CreateMode mode = CreateMode.PERSISTENT; zooKeeper.create(path, data, Ids.OPEN_ACL_UNSAFE, mode); zooKeeper.close(); } }
在上面的示例中,首先创建了一个ZooKeeper客户端实例,然后指定了要创建的节点路径、节点数据、节点创建模式,最后调用create
方法创建节点。需要注意的是,ZooKeeper节点的路径必须是唯一的,不能重复创建同一个路径的节点。