Zookeeper实例Curator API-PathChildrenCache

import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.framework.recipes.cache.PathChildrenCache;
import org.apache.curator.framework.recipes.cache.PathChildrenCache.StartMode;
import org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent;
import org.apache.curator.framework.recipes.cache.PathChildrenCacheListener;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.apache.zookeeper.CreateMode;

/**
 * 
 * @ClassName: PathChildrenCache_Sample
 * @Description: TODO(子节点监听)
 * @author RongShu
 * @date 2017年6月17日 下午1:46:33
 *
 */
public class PathChildrenCache_Sample {

	static String path = "/zk-book";
	static CuratorFramework client = CuratorFrameworkFactory.builder().connectString("localhost:2181")
			.retryPolicy(new ExponentialBackoffRetry(1000, 3)).sessionTimeoutMs(5000).build();

	public static void main(String[] args) throws Exception {
		client.start();
		PathChildrenCache cache = new PathChildrenCache(client, path, true);
		cache.start(StartMode.POST_INITIALIZED_EVENT);
		cache.getListenable().addListener(new PathChildrenCacheListener() {
			public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) throws Exception {
				switch (event.getType()) {
				case CHILD_ADDED:
					System.out.println("CHILD_ADDED," + event.getData().getPath());
					break;
				case CHILD_UPDATED:
					System.out.println("CHILD_UPDATED," + event.getData().getPath());
					break;
				case CHILD_REMOVED:
					System.out.println("CHILD_REMOVED," + event.getData().getPath());
					break;
				default:
					break;
				}
			}
		});
		client.create().withMode(CreateMode.PERSISTENT).forPath(path);
		Thread.sleep(1000);
		client.create().withMode(CreateMode.PERSISTENT).forPath(path + "/c1");
		Thread.sleep(1000);
		client.delete().forPath(path + "/c1");
		Thread.sleep(1000);
		client.delete().forPath(path);
		Thread.sleep(Integer.MAX_VALUE);
	}
}
输出
CHILD_ADDED,/zk-book/c1
CHILD_REMOVED,/zk-book/c1

注意：

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