java.lang.ClassNotFoundException: org.I0Itec.zkclient.IZkStateListener异常解决

在启动Dubbo项目时，出现该异常

java.lang.ClassNotFoundException: org.I0Itec.zkclient.IZkStateListener

解决，引入

<dependency>
      <groupId>com.github.sgroschupf</groupId>
      <artifactId>zkclient</artifactId>
      <version>0.1</version>
</dependency>