Shulou(Shulou.com)06/01 Report--

How to get child nodes in ZooKeeper Java client API, for this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

Get the child nodes of a node

Public class ZooKeeper_GetChildren_API_Sync_Usage implements Watcher {private static CountDownLatch connectedSemaphore = new CountDownLatch (1); private static ZooKeeper zk = null; public static void main (String [] args) throws Exception {String path = "/ huangyi" Zk = new ZooKeeper ("202.201.13.55 new ZooKeeper_GetChildren_API_Sync_Usage 2100", 5000, new ZooKeeper_GetChildren_API_Sync_Usage ()); connectedSemaphore.await () Zk.create (path, ".getBytes (), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT); zk.create (path+" / C1 "," .getBytes (), Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL) List childrenList = zk.getChildren (path, true); System.out.println (childrenList); zk.create (path+ "/ c2", "" .getBytes (), Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL); Thread.sleep (Integer.MAX_VALUE) } public void process (WatchedEvent event) {if (KeeperState.SyncConnected = = event.getState ()) {if (EventType.None = = event.getType () & & null = = event.getPath ()) {connectedSemaphore.countDown () } else if (event.getType () = = EventType.NodeChildrenChanged) {try {System.out.println ("ReGet Child:" + zk.getChildren (event.getPath (), true)) } catch (Exception e) {}

Result printing

[C1] ReGet Child: [C1, c2] this is the answer to the question about how to obtain child nodes in ZooKeeper Java client API. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.