JAVA 连接 ZooKeeper之初体验

Posted 2020-12-04 为你撑起一片天

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 [email protected] - 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=

    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