duboo框架运行报错，求解

以下报错信息，请问是怎么一回事呢

 dubbo version: 2.8.4, current host: 127.0.0.1
2018-10-25 20:13:01,423 [localhost-startStop-1] [com.alibaba.dubbo.common.extension.ExtensionLoader]-[DEBUG]  [DUBBO] package com.alibaba.dubbo.common.threadpool;
import com.alibaba.dubbo.common.extension.ExtensionLoader;
public class ThreadPool$Adpative implements com.alibaba.dubbo.common.threadpool.ThreadPool {
public java.util.concurrent.Executor getExecutor(com.alibaba.dubbo.common.URL arg0) {
if (arg0 == null) throw new IllegalArgumentException("url == null");
com.alibaba.dubbo.common.URL url = arg0;
String extName = url.getParameter("threadpool", "fixed");
if(extName == null) throw new IllegalStateException("Fail to get extension(com.alibaba.dubbo.common.threadpool.ThreadPool) name from url(" + url.toString() + ") use keys([threadpool])");
com.alibaba.dubbo.common.threadpool.ThreadPool extension = (com.alibaba.dubbo.common.threadpool.ThreadPool)ExtensionLoader.getExtensionLoader(com.alibaba.dubbo.common.threadpool.ThreadPool.class).getExtension(extName);
return extension.getExecutor(arg0);
}
}, dubbo version: 2.8.4, current host: 127.0.0.1
2018-10-25 20:13:01,447 [localhost-startStop-1] [org.jboss.netty.channel.socket.nio.SelectorUtil]-[DEBUG]  [DUBBO] Using select timeout of 500, dubbo version: 2.8.4, current host: 127.0.0.1
2018-10-25 20:13:01,447 [localhost-startStop-1] [org.jboss.netty.channel.socket.nio.SelectorUtil]-[DEBUG]  [DUBBO] Epoll-bug workaround enabled = false, dubbo version: 2.8.4, current host: 127.0.0.1
2018-10-25 20:13:01,688 [localhost-startStop-1] [com.alibaba.dubbo.remoting.transport.AbstractServer]-[INFO]  [DUBBO] Start NettyServer bind /0.0.0.0:20880, export /172.30.166.1:20880, dubbo version: 2.8.4, current host: 127.0.0.1
2018-10-25 20:13:01,692 [localhost-startStop-1] [com.alibaba.dubbo.common.extension.ExtensionLoader]-[DEBUG]  [DUBBO] package com.alibaba.dubbo.remoting.zookeeper;
import com.alibaba.dubbo.common.extension.ExtensionLoader;
public class ZookeeperTransporter$Adpative implements com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter {
public com.alibaba.dubbo.remoting.zookeeper.ZookeeperClient connect(com.alibaba.dubbo.common.URL arg0) {
if (arg0 == null) throw new IllegalArgumentException("url == null");
com.alibaba.dubbo.common.URL url = arg0;
String extName = url.getParameter("client", url.getParameter("transporter", "zkclient"));
if(extName == null) throw new IllegalStateException("Fail to get extension(com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter) name from url(" + url.toString() + ") use keys([client, transporter])");
com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter extension = (com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter)ExtensionLoader.getExtensionLoader(com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter.class).getExtension(extName);
return extension.connect(arg0);
}
}, dubbo version: 2.8.4, current host: 127.0.0.1
十月 25, 2018 8:13:01 下午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
java.lang.NoClassDefFoundError: org/I0Itec/zkclient/IZkStateListener
    at com.alibaba.dubbo.remoting.zookeeper.zkclient.ZkclientZookeeperTransporter.connect(ZkclientZookeeperTransporter.java:10)
    at com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter$Adpative.connect(ZookeeperTransporter$Adpative.java)
    at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistry.<init>(ZookeeperRegistry.java:69)
    at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistryFactory.createRegistry(ZookeeperRegistryFactory.java:37)
    at com.alibaba.dubbo.registry.support.AbstractRegistryFactory.getRegistry(AbstractRegistryFactory.java:94)
    at com.alibaba.dubbo.registry.RegistryFactory$Adpative.getRegistry(RegistryFactory$Adpative.java)
    at com.alibaba.dubbo.registry.integration.RegistryProtocol.getRegistry(RegistryProtocol.java:190)
    at com.alibaba.dubbo.registry.integration.RegistryProtocol.export(RegistryProtocol.java:109)
    at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.export(ProtocolListenerWrapper.java:54)
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper.export(ProtocolFilterWrapper.java:53)
    at com.alibaba.dubbo.rpc.Protocol$Adpative.export(Protocol$Adpative.java)
    at com.alibaba.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:489)
    at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:285)
    at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:246)
    at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:145)
    at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:110)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:151)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:128)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331)
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:773)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:483)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.I0Itec.zkclient.IZkStateListener
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
    ... 33 more

十月 25, 2018 8:13:01 下午 org.apache.catalina.core.StandardContext startInternal
严重: Error listenerStart
十月 25, 2018 8:13:01 下午 org.apache.catalina.core.StandardContext startInternal
严重: Context [] startup failed due to previous errors
十月 25, 2018 8:13:01 下午 org.apache.catalina.core.ApplicationContext log
信息: Closing Spring root WebApplicationContext
2018-10-25 20:13:01,701 [localhost-startStop-1] [org.springframework.web.context.ContextLoader]-[ERROR] Context initialization failed
java.lang.NoClassDefFoundError: org/I0Itec/zkclient/IZkStateListener
    at com.alibaba.dubbo.remoting.zookeeper.zkclient.ZkclientZookeeperTransporter.connect(ZkclientZookeeperTransporter.java:10)
    at com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter$Adpative.connect(ZookeeperTransporter$Adpative.java)
    at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistry.<init>(ZookeeperRegistry.java:69)
    at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistryFactory.createRegistry(ZookeeperRegistryFactory.java:37)
    at com.alibaba.dubbo.registry.support.AbstractRegistryFactory.getRegistry(AbstractRegistryFactory.java:94)
    at com.alibaba.dubbo.registry.RegistryFactory$Adpative.getRegistry(RegistryFactory$Adpative.java)
    at com.alibaba.dubbo.registry.integration.RegistryProtocol.getRegistry(RegistryProtocol.java:190)
    at com.alibaba.dubbo.registry.integration.RegistryProtocol.export(RegistryProtocol.java:109)
    at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.export(ProtocolListenerWrapper.java:54)
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper.export(ProtocolFilterWrapper.java:53)
    at com.alibaba.dubbo.rpc.Protocol$Adpative.export(Protocol$Adpative.java)
    at com.alibaba.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:489)
    at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:285)
    at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:246)
    at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:145)
    at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:110)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:151)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:128)
    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:331)
    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:773)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:483)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.I0Itec.zkclient.IZkStateListener
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
    ... 33 more

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千寻啊千寻 2018-10-25 12:26
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目测缺少zookpeer包

<dependency> <groupId>com.alibaba.spring.boot</groupId> <artifactId>dubbo-spring-boot-starter</artifactId> <version>RELEASE</version> <scope>compile</scope> </dependency> <dependency> <groupId>com.101tec</groupId> <artifactId>zkclient</artifactId> <version>0.10</version> </dependency>
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duboo框架运行报错，求解

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