dubbo消费者访问报错

Dubbo消费者调用服务者提供的服务报错:

Exception in thread "main" com.alibaba.dubbo.rpc.RpcException: No provider available from registry 127.0.0.1:2181 for service demo2/com.dubbo.service.MydubboService on consumer 192.168.131.10 use dubbo version 2.6.0, may be providers disabled or not registered ?
	at com.alibaba.dubbo.registry.integration.RegistryDirectory.doList(RegistryDirectory.java:572)
	at com.alibaba.dubbo.rpc.cluster.directory.AbstractDirectory.list(AbstractDirectory.java:73)
	at com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker.list(AbstractClusterInvoker.java:265)
	at com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:224)
	at com.alibaba.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:70)
	at com.alibaba.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:51)
	at com.alibaba.dubbo.common.bytecode.proxy0.getMessage(proxy0.java)
	at MydubboConsumer.main(MydubboConsumer.java:11)

解决办法：
服务者注册在zookeeper上的服务配置

<dubbo:service interface="com.dubbo.service.MydubboService" group="demo1"  ref="mydemoServiceImpl" timeout="600000"/>

消费者配置

<dubbo:reference id="demoService"  group="demo2"  check="false" interface="com.dubbo.service.MydubboService" timeout="180000" />

是的，这里消费者group必须和服务者定义的group一致，不然就会调用不到这个服务，把group改成=demo1就好了
可以看到注册的服务zookeeper叶子节点里面数据是这样子

格式化一下，猜测dubbo源码是加了group条件的判断