核心程式碼如下：

package com.zsj.zkclient.test;


import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;


import org.I0Itec.zkclient.IZkChildListener;
import org.I0Itec.zkclient.IZkDataListener;
import org.I0Itec.zkclient.ZkClient;
import org.I0Itec.zkclient.ZkConnection;
import org.I0Itec.zkclient.exception.ZkMarshallingError;
import org.I0Itec.zkclient.serialize.ZkSerializer;


public class ZkClientBase {
static final String CONNECT_ADDR = "localhost:2181";
static final int SESSION_TIMEOUT = 5000;


static ZkClient zkClient = new ZkClient(new ZkConnection(CONNECT_ADDR), SESSION_TIMEOUT, new CustomSerializer());


public static void main(String[] args) throws InterruptedException {


// 3.更新和判斷節點是否存在
zkClient.createPersistent("/super/c2", true);
zkClient.createPersistent("/super/c2/xxf", true);
zkClient.createPersistent("/super/c2/xxf/xds", true);
zkClient.createPersistent("/super/c2/xxf/sss", true);
zkClient.createPersistent("/super/c2/xxf/xds/sdfs", true);
zkClient.createPersistent("/super", true);
zkClient.writeData("/super/c1", "新內ssss容452werf6"); // 修改指定節點的值
printChilds("/super");


 
          
addListener("/super");
zkClient.writeData("/super/c1", "新qqq52werf6"); // 修改指定節點的值
new Thread(()->{
while(true){

//printConfigs();
try {
TimeUnit.SECONDS.sleep(5);
} catch (InterruptedException e) {
e.printStackTrace();
}


}


}).start();;
TimeUnit.HOURS.sleep(5);
zkClient.close();
}


static Map<String, String> configs = new HashMap<String, String>();


static void printConfigs() {
for (String key : configs.keySet()) {
System.out.format("map--->node=%s,data=%s \n", key, configs.get(key));
}
}


static void printChilds(String path) {
List<String> childs = zkClient.getChildren(path);
for (String child : childs) {
String childPath = path + "/" + child;
if (zkClient.countChildren(childPath) > 0) {
printChilds(childPath);
}
String cData = zkClient.readData(childPath);
configs.put(childPath, cData);
System.out.format("node=%s,data=%s \n", childPath, cData);
}


}


static void addListener(String path) {

List<String> childs = zkClient.getChildren(path);


for (String child : childs) {
final String childPath = path + "/" + child;
if (zkClient.countChildren(childPath) > 0) {
addListener(childPath);
}
subscribe(childPath);


}


}


private static void subscribe(final String childPath) {
System.out.println("subscribeDataChanges-->" + childPath);
zkClient.subscribeDataChanges(childPath, new IZkDataListener() {
public void handleDataDeleted(String s) throws Exception {
System.out.println("刪除的節點為：" + s);
configs.remove(s);
}


public void handleDataChange(String s, Object o) throws Exception {
System.out.println("變更節點為：" + s + "，變更資料為：" + o);
if (o == null) {
configs.remove(s);
return;
}
configs.put(s, o.toString());
}
});

zkClient.subscribeChildChanges(childPath, new IZkChildListener() {  
            public void handleChildChange(String parentPath, List<String> currentChilds) throws Exception {                
                if(currentChilds==null) {
                return ;
                }
                for(String cd:currentChilds) {
                subscribe(parentPath+"/"+cd);//重新訂閱
                }
            }
        }); 

}
}


class CustomSerializer implements ZkSerializer {
/** default utf 8 */
private String charset = "UTF-8";


public CustomSerializer() {
}


public CustomSerializer(String charset) {
this.charset = charset;
}


public byte[] serialize(Object data) throws ZkMarshallingError {
try {
byte[] bytes = String.valueOf(data).getBytes(charset);
return bytes;
} catch (UnsupportedEncodingException e) {
throw new ZkMarshallingError("Wrong Charset:" + charset);
}
}


public Object deserialize(byte[] bytes) throws ZkMarshallingError {
String result = null;
try {
result = new String(bytes, charset);
} catch (UnsupportedEncodingException e) {
throw new ZkMarshallingError("Wrong Charset:" + charset);
}
return result;
}
}

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>


  <groupId>com.zsj.zkclient</groupId>
  <artifactId>test</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>


  <name>test</name>
  <url>http://maven.apache.org</url>


  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>


  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
    <groupId>com.101tec</groupId>
    <artifactId>zkclient</artifactId>
    <version>0.10</version>
    </dependency>
  </dependencies>
</project>

執行效果如下：

變更節點為：/super/c2/xxf/sassaa/saassaas/assaas/aaa/assaa，變更資料為：assaasasas
parentPath: /super/c2/xxf/sassaa/saassaas/assaas/aaa/assaa
currentChilds: null
刪除的節點為：/super/c2/xxf/sassaa/saassaas/assaas/aaa/assaa
parentPath: /super/c2/xxf/sassaa/saassaas/assaas/aaa
currentChilds: []