启动dubbo2.6.7时报错：java.lang.NoClassDefFoundError: io/netty/channel/EventLoopGroup

启动dubbo2.6.7时报错：java.lang.NoClassDefFoundError: io/netty/channel/EventLoopGroup

在pom.xml文件中加入该依赖得到解决

<dependency>
   <groupId>io.netty</groupId>
   <artifactId>netty-all</artifactId>
   <version>4.1.32.Final</version>
</dependency>