ZooKeeper级联删除javaAPI

最新推荐文章于 2024-06-16 09:39:29 发布

Simon_Sun_1984

最新推荐文章于 2024-06-16 09:39:29 发布

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分类专栏： zookeeper 文章标签： zookeeper 级联删除 rmr java

本文链接：https://blog.youkuaiyun.com/sunsiyuan521/article/details/72457559

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本文提供了一个Java示例程序，演示如何使用ZooKeeper API递归删除ZooKeeper中的节点及其子节点。该程序首先创建一个ZooKeeper客户端连接，然后调用自定义的rmr方法来实现节点的递归删除。

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package cn.ssy.zk.api;
import java.util.List;
import org.apache.zookeeper.ZooKeeper;

public class ZKAPIDemoTest {
    private static String connectString ="hadoop02:2181";
    private static int sessionTimeout=5000;

    public static void main(String[] args) throws Exception {
        //创建节点
        ZooKeeper zk = new ZooKeeper(connectString, sessionTimeout, null);
        rmr("/zk01");
        zk.close();
    }
    public static boolean rmr(String path) throws Exception{
            ZooKeeper zk = new ZooKeeper(connectString, sessionTimeout, null);
            String childrenPath = null;
            List<String> children = zk.getChildren(path, false);
            if (children.size()!=0){
                for(String child: children){
                    childrenPath=path+"/"+child;
                    if(childrenPath.isEmpty()){
                    zk.delete(childrenPath, -1);
                    }else rmr(childrenPath);
                    System.out.println(childrenPath);
                }
            }
            zk.delete(path, -1);            
            return false;
    }
}