Basic use of zookeeper curator

Below, we'll demonstrate curator's most basic crud functionality with a simple example:

maven dependency:

org.apache.zookeeper zookeeper 3.4.12 org.apache.curator curator-recipes 2.12.0 junit junit 4.12 test

Test Category:

package per.ym.zookeeper;import java.util.List;import org.apache.curator.RetryPolicy;import org.apache.curator.framework.CuratorFramework;import org.apache.curator.framework.CuratorFrameworkFactory;import org.apache.curator.retry.BoundedExponentialBackoffRetry;import org.apache.curator.retry.ExponentialBackoffRetry;import org.apache.curator.retry.RetryForever;import org.apache.curator.retry.RetryNTimes;import org.apache.curator.retry.RetryOneTime;import org.apache.curator.retry.RetryUntilElapsed;import org.apache.zookeeper.data.Stat;import org.junit.After;import org.junit.Before;import org.junit.Test;public class CuratorBasicAPI { private CuratorFramework client; private String connectString = "192.168.61.131:2184"; private int sessionTimeoutMs = 60000; private int connectionTimeoutMs = 60000; private String path = "/test"; private String rootPath = "/"; private byte[] data = "data".getBytes(); private byte[] newData = "newData".getBytes(); private int baseSleepTimeMs = 1000; private int maxRetries = 3; @Before public void connect() { //baseSleepTimeMs: basal sleep time;maxRetries: maximum number of retries;maxSleepMs: maximum sleep time between retries //The formula for calculating sleep time is: sleepMs = baseSleepTimeMs * Math.max(1, random.nextInt(1