JAVA 连接 ZooKeeper之初体验

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JAVA 连接 ZooKeeper之初体验
Java连接Zookeeper

一、配置zk环境
- 本人使用的是虚拟机，创建了两台linux服务器（安装过程百度上很多）
- 准备zk的安装包，zookeeper-3.4.10.tar.gz，可在Apache官网下载，这里我提供了一个百度云的https://pan.baidu.com/s/15icVROSKpgwUzqzpHW6Rbg 密码dgnp
- 安装过程
  
  环境准备：安装JDK，配置Hosts，配置Hostname、关闭防火墙
  
  $ZOOKEEPER = /home/zookeeper_application/zookeeper-3.4.10
  
  tar -xvzf zookeeper-3.4.10.tar.gz目录为/home/zookeeper_application/zookeeper-3.4.10
  
  cd 到zookeeper-3.4.10，mkdir data 创建data文件夹，cd 到data，touch myid 创建myid文件，vi myid myid存server的id，可以是1，2，3…，必须唯一
  
  创建$ZOOKEEPER/conf/zoo.cfg
  修改zoo.cfg，增加如下：
  
  dataDir=/home/zookeeper_application/zookeeper-3.4.10/data
  
  clientPort=2181
  
  initLimit=10
  
  syncLimit=5
  
  tickTime=2000
  
  server.1=master:2888:3888
  
  server.2=slave1:2888:3888
  
  其中server.X代表组成整个服务的机器，当服务启动时，会在数据目录下查找这个文件myid,这个文件中存有服务器的号码。
- 配置/etc/profile：
  
  export ZOOKEEPER_HOME=/home/zookeeper_application/zookeeper-3.4.10
  
  export PATH=$PATH:/usr/local/jdk1.7/bin:$ZOOKEEPER_HOME/bin
- 同样配置另外一台服务器，myid为2
- 启动/状态/停止在bin目录下 zkServer.sh start|status|stop
java部分
- 创建zk.properties
  
  zk.server=192.168.2.111:2181
  
  zk.authentication_type=digest
  
  zk.correct_authentication=rightKey
  
  zk.bad_authentication=worngKey
- ZkConfig.java
```
package org.seckill.zk.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
	
/**
 * @author mxn
 * @create 2018-07-16 17:22
 */
public class ZkConfig {

public static final Logger logger = LoggerFactory.getLogger(ZkConfig.class);

public static final String FILE_NAME = "zk.properties";

private String server;
private String authenticationType;
private String correctAuthentication;
private String badAuthentication;

/**
 * 配置文件中的常量.
 */
public static final String zk_server = "zk.server";
public static final String zk_authentication_type = "zk.authentication_type";
public static final String zk_correct_authentication = "zk.correct_authentication";
public static final String zk_bad_authentication = "zk.bad_authentication";

 /**
 * 操作对象.
 */
private static ZkConfig config = new ZkConfig();

private ZkConfig() {
    super();
}

private Properties properties;

/**
 * 获取config对象.
 *
 * @return
 */
public static ZkConfig getConfig() {
    return config;
}

public static void main(String[] args) {
    System.out.println(1);
}


static {
    config.loadPropertiesFromSrc();
}

public void loadPropertiesFromSrc() {
    InputStream in = null;

    try {
        in = ZkConfig.class.getClassLoader().getResourceAsStream(FILE_NAME);
        if (null != in) {
            properties = new Properties();
            try {
                properties.load(in);
                loadProperties(properties);
            } catch (IOException e) {
                throw e;
            }
        } else {
            logger.error(FILE_NAME + "属性文件未能在classpath指定的目录下 " + ZkConfig.class.getClassLoader().getResource("").getPath() + " 找到!");
        }
    } catch (Exception e) {
        logger.error("ZkConfig.getZkConfig error:", e);
    } finally {
        if (null != in) {
            try {
                in.close();
            } catch (IOException e) {
                logger.error(e.getMessage(), e);
            }
        }
    }
}


/**
 * 根据传入的 {@link # load(Properties)}对象设置配置参数
 *
 * @param pro
 */
public void loadProperties(Properties pro) {
    logger.info("开始从属性文件中加载配置项");
    String value = null;

    value = pro.getProperty(zk_server);
    if (!ZkUtil.isEmpty(value)) {
        this.server = value.trim();
        logger.info("配置项：服务器ip==>" + zk_server + "==>" + value + " 已加载");
    }
    value = pro.getProperty(zk_authentication_type);
    if (!ZkUtil.isEmpty(value)) {
        this.authenticationType = value.trim();
        logger.info("配置项：验证类型==>" + zk_authentication_type + " 已加载");
    }
    value = pro.getProperty(zk_correct_authentication);
    if (!ZkUtil.isEmpty(value)) {
        this.correctAuthentication = value.trim();
        logger.info("配置项：正确的密码==>" + zk_correct_authentication + " 已加载");
    }
    value = pro.getProperty(zk_bad_authentication);
    if (!ZkUtil.isEmpty(value)) {
        this.badAuthentication = value.trim();
        logger.info("配置项：错误的密码==>" + zk_bad_authentication + " 已加载");
    }
}


public static Logger getLogger() {
    return logger;
}

public static String getFileName() {
    return FILE_NAME;
}

public String getServer() {
    return server;
}

public void setServer(String server) {
    this.server = server;
}

public String getAuthenticationType() {
    return authenticationType;
}

public void setAuthenticationType(String authenticationType) {
    this.authenticationType = authenticationType;
}

public String getCorrectAuthentication() {
    return correctAuthentication;
}

public void setCorrectAuthentication(String correctAuthentication) {
    this.correctAuthentication = correctAuthentication;
}

public String getBadAuthentication() {
    return badAuthentication;
}

public void setBadAuthentication(String badAuthentication) {
    this.badAuthentication = badAuthentication;
}

public static String getZk_server() {
    return zk_server;
}

public static String getZk_authentication_type() {
    return zk_authentication_type;
}

public static String getZk_correct_authentication() {
    return zk_correct_authentication;
}

public static String getZk_bad_authentication() {
    return zk_bad_authentication;
}

public static void setConfig(ZkConfig config) {
    ZkConfig.config = config;
}
}
```
- ZkUtil.java 一个工具类
  
  package org.seckill.zk.util; /** * @author 12084 * @create 2018-07-17 9:09 */ public class ZkUtil { /** * 判断字符串是否为NULL或空 * * @param s * 待判断的字符串数据 * @return 判断结果 true-是 false-否 */ public static boolean isEmpty(String s) { return null == s || "".equals(s.trim()); } }
- ZkAuth.java
  package org.seckill.zk;
  
  import org.apache.zookeeper.*; import org.apache.zookeeper.data.Stat; import org.seckill.zk.util.ZkConfig; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.concurrent.atomic.AtomicInteger; /** * @author 12084 * @create 2018-07-16 15:59 */ public class ZkAuth implements Watcher { public static final Logger logger = LoggerFactory.getLogger(ZkAuth.class); final static String PATH = "/auth_test"; final static String PATH_DEL = "/auth_test/del_node"; static ZooKeeper zk = null; AtomicInteger seq = new AtomicInteger(); public void process(WatchedEvent event) { try { Thread.sleep(200); } catch (InterruptedException e) { e.printStackTrace(); } if (event == null) { return; } //连接状态 Event.KeeperState keeperState = event.getState(); //事件类型 Event.EventType eventType = event.getType(); String logPrefix = "【Watcher-" + seq.incrementAndGet() + "】"; logger.info(logPrefix + "收到Watcher通知"); logger.info(logPrefix + "连接状态: " + keeperState.toString()); logger.info(logPrefix + "事件类型: " + eventType.toString()); if (Event.KeeperState.SyncConnected == keeperState) { //成功连接上ZK服务器 if (Event.EventType.None == eventType) { logger.info(logPrefix + "成功连接上ZK服务器"); } } else if (Event.KeeperState.Disconnected == keeperState) { logger.info(logPrefix + "与ZK服务器断开连接"); } else if (Event.KeeperState.AuthFailed == keeperState) { logger.info(logPrefix + "权限检查失败"); } else if (Event.KeeperState.Expired == keeperState) { logger.info(logPrefix + "会话失效"); } logger.info("--------------------------------------------"); } /** * 创建ZK连接 * * @param connectString ZK服务器地址列表 * @param sessionTimeout Session超时时间 */ public void createConnection(String connectString, int sessionTimeout) { releaseConnection(); try { zk = new ZooKeeper(connectString, sessionTimeout, this); //授权 zk.addAuthInfo(ZkConfig.getConfig().getAuthenticationType(), ZkConfig.getConfig().getCorrectAuthentication().getBytes()); logger.info("开始连接ZK服务器...."); while (zk.getState() != ZooKeeper.States.CONNECTED) { Thread.sleep(3000); } } catch (Exception e) { e.printStackTrace(); } } /** * 关闭ZK连接 */ public void releaseConnection() { if (zk != null) { try { zk.close(); } catch (InterruptedException e) { e.printStackTrace(); } } } /** * 获取数据：不采用密码 */ static void getDataByNoAuthentication() { String prefix = "[不使用任何授权信息]"; logger.info(prefix + "获取数据:" + PATH); try { ZooKeeper noZk = new ZooKeeper(ZkConfig.getConfig().getServer(), 2000, null); Thread.sleep(4000); logger.info(prefix + "成功获取数据:" + noZk.getData(PATH, false, null)); } catch (Exception e) { logger.error(prefix + "获取数据失败，原因:" + e.getMessage()); } } /** * 获取数据：采用错误的密码 */ static void getDataByBadAuthentication() { String prefix = "[使用错误的授权信息]"; try { ZooKeeper badzk = new ZooKeeper(ZkConfig.getConfig().getServer(), 2000, null); //授权 Thread.sleep(4000); badzk.addAuthInfo(ZkConfig.getConfig().getAuthenticationType(), ZkConfig.getConfig().getBadAuthentication().getBytes()); logger.info(prefix + "获取数据：" + PATH); logger.info(prefix + "成功获取数据：" + badzk.getData(PATH, false, null)); } catch (Exception e) { logger.error(prefix + "获取数据失败，原因：" + e.getMessage()); } } /** * 采用正确的密码 */ static void getDataByCorrectAuthentication() { String prefix = "[使用正确的授权信息]"; try { logger.info(prefix + "获取数据:" + PATH); logger.warn(prefix + "成功获取数据：" + new String(zk.getData(PATH, false, null))); } catch (Exception e) { logger.error(prefix + "获取数据失败，原因：" + e.getMessage()); } } /** * 更新数据：不采用密码 */ static void updateDataByNoAuthentication() { String prefix = "[不使用任何授权信息]"; logger.info(prefix + "更新数据:" + PATH); try { ZooKeeper nozk = new ZooKeeper(ZkConfig.getConfig().getServer(), 2000, null); Thread.sleep(4000); Stat stat = nozk.exists(PATH, false); if (stat != null) { nozk.setData(PATH, prefix.getBytes(), -1); logger.info(prefix + "更新成功"); } } catch (Exception e) { logger.error(prefix + "更新失败，原因是：" + e.getMessage()); } } /** * 更新数据：采用错误的密码 */ static void updateDataByBadAuthentication() { String prefix = "[使用错误的授权信息]"; logger.info(prefix + "更新数据：" + PATH); try { ZooKeeper badzk = new ZooKeeper(ZkConfig.getConfig().getServer(), 2000, null); //授权 badzk.addAuthInfo(ZkConfig.getConfig().getAuthenticationType(), ZkConfig.getConfig().getCorrectAuthentication().getBytes()); Stat exists = badzk.exists(PATH, false); if (exists != null) { badzk.setData(PATH, prefix.getBytes(), -1); logger.info(prefix + "更新成功"); } } catch (Exception e) { logger.error(prefix + "更新失败，原因是：" + e.getMessage()); } } /** * 更新数据：采用正确的密码 */ static void updateDataByCorrectAuthentication() { String prefix = "[使用正确的授权信息]"; logger.info(prefix + "更新数据：" + PATH); try { Stat stat = zk.exists(PATH, false); if (stat != null) { zk.setData(PATH, prefix.getBytes(), -1); logger.info(prefix + "更新成功"); } } catch (Exception e) { logger.error(prefix + "更新失败，原因是：" + e.getMessage()); } } static void deleteParent() throws Exception { Stat stat = zk.exists(PATH_DEL, false); if (stat != null) { zk.delete(PATH_DEL, -1); zk.delete(PATH, -1); return; } Stat stat2 = zk.exists(PATH, false); if (stat2 != null) { zk.delete(PATH, -1); } } public static void main(String[] args) { ZkAuth zkAuth = null; try { zkAuth = new ZkAuth(); zkAuth.createConnection(ZkConfig.getConfig().getServer(), 5000); deleteParent(); zk.create(PATH, "init content".getBytes(), ZooDefs.Ids.CREATOR_ALL_ACL, CreateMode.PERSISTENT); // zk.create(PATH_DEL, "will be deleted!".getBytes(), ZooDefs.Ids.CREATOR_ALL_ACL, CreateMode.PERSISTENT); logger.info("客户端开始访问-----------------------------------------------"); //获取数据 getDataByNoAuthentication(); getDataByBadAuthentication(); getDataByCorrectAuthentication(); } catch (Exception e) { e.printStackTrace(); } finally { //释放连接 zkAuth.releaseConnection(); } } }
- 运行结果
- 启动两台linux服务器
  
  启动zk
  
  另外一台服务器同样操作
  
  运行java代码
  
  运行日志：
  
  Connected to the target VM, address: '127.0.0.1:52280', transport: 'socket'
  SLF4J: Class path contains multiple SLF4J bindings.
  SLF4J: Found binding in [jar:file:/D:/Maven/repo/ch/qos/logback/logback-classic/1.1.1/logback-classic-1.1.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
  SLF4J: Found binding in [jar:file:/D:/Maven/repo/org/slf4j/slf4j-log4j12/1.6.1/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
  SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
  13:56:20,355 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
  13:56:20,356 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
  13:56:20,370 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/D:/workspace/maven/seckill/target/classes/logback.xml]
  13:56:20,527 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
  13:56:20,531 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
  13:56:20,559 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
  13:56:20,617 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to DEBUG
  13:56:20,617 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
  13:56:20,618 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
  SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder]
  13:56:20,620 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@17c386de - Registering current configuration as safe fallback point
  13:56:20.626 [main] INFO org.seckill.zk.util.ZkConfig - 开始从属性文件中加载配置项
  13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：服务器ip>zk.server>192.168.2.111:2181 已加载
  13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：验证类型>zk.authentication_type 已加载
  13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：正确的密码>zk.correct_authentication 已加载
  13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：错误的密码==>zk.bad_authentication 已加载
  13:56:20.645 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:zookeeper.version=3.4.6-1569965, built on 02/20/2014 09:09 GMT
  13:56:20.645 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:host.name=windows10.microdone.cn
  13:56:20.645 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.version=1.8.0_11
  13:56:20.646 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.vendor=Oracle Corporation
  13:56:20.646 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.home=C:Program FilesJavajdk1.8.0_11jre
  ar;D:Maven epoorgslf4jslf4j-api1.7.12slf4j-api-1.7.12.jar;D:Maven epochqoslogbacklogback-core1.1.1logback-core-1.1.1.jar;D:Maven epochqoslogbacklogback-classic1.1.1logback-classic-1.1.1.jar;D:Maven epomysqlmysql-connector-java5.1.35mysql-connector-java-5.1.35.jar;D:Maven epoc3p0c3p0.9.1.2c3p0-0.9.1.2.jar;D:Maven epoorgmybatismybatis3.3.0mybatis-3.3.0.jar;D:Maven epoorgmybatismybatis-spring1.2.3mybatis-spring-1.2.3.jar;D:Maven epo aglibsstandard1.1.2standard-1.1.2.jar;D:Maven epojstljstl1.2jstl-1.2.jar;D:Maven epocomfasterxmljacksoncorejackson-databind2.5.4jackson-databind-2.5.4.jar;D:Maven epocomfasterxmljacksoncorejackson-annotations2.5.0jackson-annotations-2.5.0.jar;D:Maven epocomfasterxmljacksoncorejackson-core2.5.4jackson-core-2.5.4.jar;D:Maven epojavaxservletjavax.servlet-api3.1.0javax.servlet-api-3.1.0.jar;D:Maven epoorgspringframeworkspring-core4.1.7.RELEASEspring-core-4.1.7.RELEASE.jar;D:Maven epocommons-loggingcommons-logging1.2commons-logging-1.2.jar;D:Maven epoorgspringframeworkspring-beans4.1.7.RELEASEspring-beans-4.1.7.RELEASE.jar;D:Maven epoorgspringframeworkspring-context4.1.7.RELEASEspring-context-4.1.7.RELEASE.jar;D:Maven epoorgspringframeworkspring-aop4.1.7.RELEASEspring-aop-4.1.7.RELEASE.jar;D:Maven epoaopallianceaopalliance1.0aopalliance-1.0.jar;D:Maven epoorgspringframeworkspring-expression4.1.7.RELEASEspring-expression-4.1.7.RELEASE.jar;D:Maven epoorgspringframeworkspring-jdbc4.1.7.RELEASEspring-jdbc-4.1.7.RELEASE.jar;D:Maven epoorgspringframeworkspring-tx4.1.7.RELEASEspring-tx-4.1.7.RELEASE.jar;D:Maven epoorgspringframeworkspring-web4.1.7.RELEASEspring-web-4.1.7.RELEASE.jar;D:Maven epoorgspringframeworkspring-webmvc4.1.7.RELEASEspring-webmvc-4.1.7.RELEASE.jar;D:Maven epoorgspringframeworkspring-test4.1.7.RELEASEspring-test-4.1.7.RELEASE.jar;D:Maven epo edisclientsjedis2.7.3jedis-2.7.3.jar;D:Maven epoorgapachecommonscommons-pool22.3commons-pool2-2.3.jar;D:Maven epocomdyuprojectprotostuffprotostuff-core1.0.8protostuff-core-1.0.8.jar;D:Maven epocomdyuprojectprotostuffprotostuff-api1.0.8protostuff-api-1.0.8.jar;D:Maven epocomdyuprojectprotostuffprotostuff-runtime1.0.8protostuff-runtime-1.0.8.jar;D:Maven epocomdyuprojectprotostuffprotostuff-collectionschema1.0.8protostuff-collectionschema-1.0.8.jar;D:Maven epocommons-collectionscommons-collections3.2commons-collections-3.2.jar;D:Maven epoorgapachezookeeperzookeeper3.4.6zookeeper-3.4.6.jar;D:Maven epoorgslf4jslf4j-log4j121.6.1slf4j-log4j12-1.6.1.jar;D:Maven epolog4jlog4j1.2.16log4j-1.2.16.jar;D:Maven epoio etty etty3.7.0.Final etty-3.7.0.Final.jar;D:Maven epojlinejline.9.94jline-0.9.94.jar;D:installIdeaIntelliJ IDEA 2018.1.1libidea_rt.jar;C:Users12084AppDataLocalTempcapture1jarsdebugger-agent.jar
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.library.path=C:Program FilesJavajdk1.8.0_11in;C:WINDOWSSunJavain;C:WINDOWSsystem32;C:WINDOWS;C:ProgramDataOracleJavajavapath;C:WINDOWSsystem32;C:WINDOWS;C:WINDOWSSystem32Wbem;C:WINDOWSSystem32WindowsPowerShellv1.0;C:Program FilesTortoiseSVNin;C:Program FilesSlikSvnin;D:Mavenapache-maven-3.3.9in;D:installMySQLMySQL Server 5.1in;C:Program FilesJavajdk1.8.0_11in;D:GitGitcmd;C:WINDOWSSystem32OpenSSH;C:Users12084AppDataLocalMicrosoftWindowsApps;%USERPROFILE%AppDataLocalMicrosoftWindowsApps;;.
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.io.tmpdir=C:Users12084AppDataLocalTemp
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:java.compiler=
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:os.name=Windows 8.1
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:os.arch=amd64
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:os.version=6.3
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:user.name=12084
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:user.home=C:Users12084
  13:56:20.648 [main] INFO org.apache.zookeeper.ZooKeeper - Client environment:user.dir=D:workspacemavenseckill
  13:56:20.649 [main] INFO org.apache.zookeeper.ZooKeeper - Initiating client connection, connectString=192.168.2.111:2181 sessionTimeout=5000 watcher=org.seckill.zk.ZkAuth@65d6b83b
  13:56:20.653 [main] DEBUG org.apache.zookeeper.ClientCnxn - zookeeper.disableAutoWatchReset is false
  13:56:20.680 [main] INFO org.seckill.zk.ZkAuth - 开始连接ZK服务器....
  13:56:20.687 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server 192.168.2.111/192.168.2.111:2181. Will not attempt to authenticate using SASL (unknown error)
  13:56:20.688 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket connection established to 192.168.2.111/192.168.2.111:2181, initiating session
  13:56:20.689 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Session establishment request sent on 192.168.2.111/192.168.2.111:2181
  13:56:20.701 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Session establishment complete on server 192.168.2.111/192.168.2.111:2181, sessionid = 0x164a88267680000, negotiated timeout = 5000
  13:56:20.732 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got auth sessionid:0x164a88267680000
  13:56:20.732 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got auth sessionid:0x164a88267680000
  13:56:20.910 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】收到Watcher通知
  13:56:20.911 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】连接状态: SyncConnected
  13:56:20.911 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】事件类型: None
  13:56:20.911 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】成功连接上ZK服务器
  13:56:20.911 [main-EventThread] INFO org.seckill.zk.ZkAuth - --------------------------------------------
  13:56:22.372 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680000 after 0ms
  13:56:23.690 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680000, packet:: clientPath:null serverPath:null finished:false header:: 1,3 replyHeader:: 1,12884901891,-101 request:: '/auth_test/del_node,F response::
  13:56:23.690 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680000 after 7ms
  13:56:23.693 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680000, packet:: clientPath:null serverPath:null finished:false header:: 2,3 replyHeader:: 2,12884901891,0 request:: '/auth_test,F response:: s{8589934652,8589934652,1531821556532,1531821556532,0,0,0,0,12,0,8589934652}
  13:56:23.701 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680000, packet:: clientPath:null serverPath:null finished:false header:: 3,2 replyHeader:: 3,12884901892,0 request:: '/auth_test,-1 response:: null
  13:56:23.714 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680000, packet:: clientPath:null serverPath:null finished:false header:: 4,1 replyHeader:: 4,12884901893,0 request:: '/auth_test,#696e697420636f6e74656e74,v{s{31,s{'auth,'}}},0 response:: '/auth_test
  13:56:23.714 [main] INFO org.seckill.zk.ZkAuth - 客户端开始访问-----------------------------------------------
  13:56:23.715 [main] INFO org.seckill.zk.ZkAuth - [不使用任何授权信息]获取数据:/auth_test
  13:56:23.715 [main] INFO org.apache.zookeeper.ZooKeeper - Initiating client connection, connectString=192.168.2.111:2181 sessionTimeout=2000 watcher=null
  13:56:23.716 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server 192.168.2.111/192.168.2.111:2181. Will not attempt to authenticate using SASL (unknown error)
  13:56:23.717 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket connection established to 192.168.2.111/192.168.2.111:2181, initiating session
  13:56:23.717 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Session establishment request sent on 192.168.2.111/192.168.2.111:2181
  13:56:23.721 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Session establishment complete on server 192.168.2.111/192.168.2.111:2181, sessionid = 0x164a88267680001, negotiated timeout = 4000
  13:56:23.730 [main-EventThread] ERROR org.apache.zookeeper.ClientCnxn - Error while calling watcher
  java.lang.NullPointerException: null
  at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522) [zookeeper-3.4.6.jar:3.4.6-1569965]
  at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498) [zookeeper-3.4.6.jar:3.4.6-1569965]
  13:56:25.051 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680001 after 0ms
  13:56:25.372 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680000 after 0ms
  13:56:26.385 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680001 after 1ms
  13:56:27.040 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680000 after 0ms
  13:56:27.718 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680001 after 1ms
  13:56:27.723 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680001, packet:: clientPath:null serverPath:null finished:false header:: 1,4 replyHeader:: 1,12884901894,-102 request:: '/auth_test,F response::
  13:56:27.734 [main] ERROR org.seckill.zk.ZkAuth - [不使用任何授权信息]获取数据失败，原因:KeeperErrorCode = NoAuth for /auth_test
  13:56:27.735 [main] INFO org.apache.zookeeper.ZooKeeper - Initiating client connection, connectString=192.168.2.111:2181 sessionTimeout=2000 watcher=null
  13:56:27.736 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server 192.168.2.111/192.168.2.111:2181. Will not attempt to authenticate using SASL (unknown error)
  13:56:27.737 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Socket connection established to 192.168.2.111/192.168.2.111:2181, initiating session
  13:56:27.737 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Session establishment request sent on 192.168.2.111/192.168.2.111:2181
  13:56:27.753 [main-SendThread(192.168.2.111:2181)] INFO org.apache.zookeeper.ClientCnxn - Session establishment complete on server 192.168.2.111/192.168.2.111:2181, sessionid = 0x164a88267680002, negotiated timeout = 4000
  13:56:27.754 [main-EventThread] ERROR org.apache.zookeeper.ClientCnxn - Error while calling watcher
  java.lang.NullPointerException: null
  at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522) [zookeeper-3.4.6.jar:3.4.6-1569965]
  at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498) [zookeeper-3.4.6.jar:3.4.6-1569965]
  13:56:28.708 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680000 after 0ms
  13:56:29.052 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680001 after 0ms
  13:56:29.071 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680002 after 1ms
  13:56:30.375 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680000 after 0ms
  13:56:30.385 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680001 after 0ms
  13:56:30.403 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680002 after 0ms
  13:56:31.719 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680001 after 0ms
  13:56:31.736 [main] INFO org.seckill.zk.ZkAuth - [使用错误的授权信息]获取数据：/auth_test
  13:56:31.737 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got auth sessionid:0x164a88267680002
  13:56:31.737 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680002 after 1ms
  13:56:31.738 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680002, packet:: clientPath:null serverPath:null finished:false header:: 1,4 replyHeader:: 1,12884901895,-102 request:: '/auth_test,F response::
  13:56:31.738 [main] ERROR org.seckill.zk.ZkAuth - [使用错误的授权信息]获取数据失败，原因：KeeperErrorCode = NoAuth for /auth_test
  13:56:31.738 [main] INFO org.seckill.zk.ZkAuth - [使用正确的授权信息]获取数据:/auth_test
  13:56:31.754 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680000, packet:: clientPath:null serverPath:null finished:false header:: 5,4 replyHeader:: 5,12884901895,0 request:: '/auth_test,F response:: #696e697420636f6e74656e74,s{12884901893,12884901893,1531835724052,1531835724052,0,0,0,0,12,0,12884901893}
  13:56:31.754 [main] WARN org.seckill.zk.ZkAuth - [使用正确的授权信息]成功获取数据：init content
  13:56:31.754 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Got ping response for sessionid: 0x164a88267680000 after 15ms
  13:56:31.754 [main] DEBUG org.apache.zookeeper.ZooKeeper - Closing session: 0x164a88267680000
  13:56:31.755 [main] DEBUG org.apache.zookeeper.ClientCnxn - Closing client for session: 0x164a88267680000
  Disconnected from the target VM, address: '127.0.0.1:52280', transport: 'socket'
  13:56:31.835 [main-SendThread(192.168.2.111:2181)] DEBUG org.apache.zookeeper.ClientCnxn - Reading reply sessionid:0x164a88267680000, packet:: clientPath:null serverPath:null finished:false header:: 6,-11 replyHeader:: 6,12884901896,0 request:: null response:: null
  13:56:31.836 [main] DEBUG org.apache.zookeeper.ClientCnxn - Disconnecting client for session: 0x164a88267680000
  13:56:31.836 [main] INFO org.apache.zookeeper.ZooKeeper - Session: 0x164a88267680000 closed
  13:56:31.836 [main-EventThread] INFO org.apache.zookeeper.ClientCnxn - EventThread shut down
  
  Process finished with exit code 0
- 详情
  13:56:20.626 [main] INFO org.seckill.zk.util.ZkConfig - 开始从属性文件中加载配置项
13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：服务器ip>zk.server>192.168.2.111:2181 已加载

13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：验证类型==>zk.authentication_type 已加载

13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：正确的密码==>zk.correct_authentication 已加载

13:56:20.634 [main] INFO org.seckill.zk.util.ZkConfig - 配置项：错误的密码==>zk.bad_authentication 已加载

13:56:20.680 [main] INFO org.seckill.zk.ZkAuth - 开始连接ZK服务器....

13:56:20.910 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】收到Watcher通知

13:56:20.911 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】连接状态: SyncConnected

13:56:20.911 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】事件类型: None

13:56:20.911 [main-EventThread] INFO org.seckill.zk.ZkAuth - 【Watcher-1】成功连接上ZK服务器

13:56:23.714 [main] INFO org.seckill.zk.ZkAuth - 客户端开始访问-----------------------------------------------

13:56:23.715 [main] INFO org.seckill.zk.ZkAuth - [不使用任何授权信息]获取数据:/auth_test

13:56:27.734 [main] ERROR org.seckill.zk.ZkAuth - [不使用任何授权信息]获取数据失败，原因:KeeperErrorCode = NoAuth for /auth_test

13:56:31.738 [main] ERROR org.seckill.zk.ZkAuth - [使用错误的授权信息]获取数据失败，原因：KeeperErrorCode = NoAuth for /auth_test

13:56:31.754 [main] WARN org.seckill.zk.ZkAuth - [使用正确的授权信息]成功获取数据：init content
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原文地址：https://www.cnblogs.com/menxn/p/9323064.html

JAVA 连接 ZooKeeper之初体验

Java连接Zookeeper

一、配置zk环境

java部分