dubbo 报错：java.lang.NoClassDefFoundError: org/I0Itec/zkclient/exception/ZkNoNodeException-白红宇

dubbo 报错：java.lang.NoClassDefFoundError: org/I0Itec/zkclient/exception/ZkNoNodeException

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发布时间：2019-05-10

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dubbo 报错：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'goodsConsultController': Unsatisfied dependency expressed through field 'goodsConsultService': Error creating bean with name 'goodsConsultService': FactoryBean threw exception on object creation; nested exception is java.lang.NoClassDefFoundError: org/I0Itec/zkclient/exception/ZkNoNodeException; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'goodsConsultService': FactoryBean threw exception on object creation; nested exception is java.lang.NoClassDefFoundError: org/I0Itec/zkclient/exception/ZkNoNodeException

解决办法参考：http://www.codingjabber.com/Article/397.html

阿里的Dubbo框架已经集成了Zookeeper、Spring等框架所以无须再添加这些框架的引用，但是有一个例外就是zkclient，如果没有引用将会抛出如下异常信息：

Exception in thread "main" java.lang.NoClassDefFoundError: org/I0Itec/zkclient/exception/ZkNoNodeException

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.ProtocolFilterWrapper.export(ProtocolFilterWrapper.java:53)

at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.export(ProtocolListenerWrapper.java:54)

at com.alibaba.dubbo.rpc.Protocol$Adpative.export(Protocol$Adpative.java)

at com.alibaba.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:485)

at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:281)

at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:242)

at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:143)

at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:109)

at org.springframework.context.event.SimpleApplicationEventMulticaster$1.run(SimpleApplicationEventMulticaster.java:78)

at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:49)

at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:76)

at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:274)

at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:736)

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:383)

at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)

at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)

at com.codingjabber.demo.dubbo.provider.App.main(App.java:15)

Caused by: java.lang.ClassNotFoundException: org.I0Itec.zkclient.exception.ZkNoNodeException

at java.net.URLClassLoader$1.run(URLClassLoader.java:366)

at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

at java.lang.ClassLoader.loadClass(ClassLoader.java:425)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

at java.lang.ClassLoader.loadClass(ClassLoader.java:358)

... 22 more

解决办法就是添加zkclient的jar，maven工程的话增加如下引用：

<dependency>

<groupId>com.github.sgroschupf</groupId>

<artifactId>zkclient</artifactId>

<version>0.1</version>

</dependency>

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