dubbo 2.7.2配置zookeeper，提示不支持

[zhangkangyue]

Exception in thread "main" java.lang.IllegalStateException: No such extension org.apache.dubbo.configcenter.DynamicConfigurationFactory by name zookeeper

[zhangkangyue]

<dubbo:registry address="zookeeper://127.0.0.1:2181"/>

[CrazyHZM]

在pom文件里面加入configcenter的依赖例如加入dubbo-configcenter-zookeeper依赖你就可以跑demo了

[arjenzhou]

@zhangkangyue
You can refer to https://github.com/arjenzhou/dubbo-demo, there are some my experience about it.

[zhangkangyue]

@zhangkangyue
You can refer to https://github.com/arjenzhou/dubbo-demo, there are some my experience about it.

provider端：
<dubbo:application name="dubbo-provider"/>
<dubbo:config-center address="zookeeper://127.0.0.1:2181"/>
<dubbo:registry address="zookeeper://127.0.0.1:2181" simplified="true"/>
<dubbo:metadata-report address="zookeeper://127.0.0.1:2181"/>

<dubbo:service interface="cn.jcorn.dubbo.api.GreetingService" ref="greetingService"/>

consumer端：<dubbo:application name="dubbo-consumer"/>
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
<dubbo:reference id="greetingService" check="false" interface="cn.jcorn.dubbo.api.GreetingService"/>

启动dubbo-demo consumer报错：
Exception in thread "main" org.apache.dubbo.rpc.RpcException: Failed to invoke the method sayHello in the service cn.jcorn.dubbo.api.GreetingService. No provider available for the service cn.jcorn.dubbo.api.GreetingService from registry 127.0.0.1:2181 on the consumer 30.16.96.186 using the dubbo version 2.7.1. Please check if the providers have been started and registered.
at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.checkInvokers(AbstractClusterInvoker.java:265)
at org.apache.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:57)
at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:242)
at org.apache.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:76)
at org.apache.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:57)
at org.apache.dubbo.common.bytecode.proxy0.sayHello(proxy0.java)
at cn.jcorn.dubbo.consumer.Consumer.main(Consumer.java:11)

[arjenzhou]

@zhangkangyue
You can take a look at zookeeper client whether provider is properly resgisted to zookeeper or not.

[arjenzhou]

Also, is 30.16.96.186 your ip address?

Provide your environment will be a good way for help.

[zhangkangyue]

Also, is 30.16.96.186 your ip address?

Provide your environment will be a good way for help.

是的

[zhangkangyue]

@zhangkangyue
You can take a look at zookeeper client whether provider is properly resgisted to zookeeper or not.

我把zk 节点/dubbo删除，consumer消费正常了。是脏数据导致的吗？

[arjenzhou]

#4213
#3785

You can refer to these two issues.

[wallacefw1987]

@zhangkangyue
You can refer to https://github.com/arjenzhou/dubbo-demo, there are some my experience about it.

provider端：
<dubbo:application name="dubbo-provider"/>
<dubbo:config-center address="zookeeper://127.0.0.1:2181"/>
<dubbo:registry address="zookeeper://127.0.0.1:2181" simplified="true"/>
<dubbo:metadata-report address="zookeeper://127.0.0.1:2181"/>

<dubbo:service interface="cn.jcorn.dubbo.api.GreetingService" ref="greetingService"/>

consumer端：<dubbo:application name="dubbo-consumer"/>
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
<dubbo:reference id="greetingService" check="false" interface="cn.jcorn.dubbo.api.GreetingService"/>

启动dubbo-demo consumer报错：
Exception in thread "main" org.apache.dubbo.rpc.RpcException: Failed to invoke the method sayHello in the service cn.jcorn.dubbo.api.GreetingService. No provider available for the service cn.jcorn.dubbo.api.GreetingService from registry 127.0.0.1:2181 on the consumer 30.16.96.186 using the dubbo version 2.7.1. Please check if the providers have been started and registered.
at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.checkInvokers(AbstractClusterInvoker.java:265)
at org.apache.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:57)
at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:242)
at org.apache.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:76)
at org.apache.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:57)
at org.apache.dubbo.common.bytecode.proxy0.sayHello(proxy0.java)
at cn.jcorn.dubbo.consumer.Consumer.main(Consumer.java:11)

@zhangkangyue
You can refer to https://github.com/arjenzhou/dubbo-demo, there are some my experience about it.

provider端：
<dubbo:application name="dubbo-provider"/>
<dubbo:config-center address="zookeeper://127.0.0.1:2181"/>
<dubbo:registry address="zookeeper://127.0.0.1:2181" simplified="true"/>
<dubbo:metadata-report address="zookeeper://127.0.0.1:2181"/>

<dubbo:service interface="cn.jcorn.dubbo.api.GreetingService" ref="greetingService"/>

consumer端：<dubbo:application name="dubbo-consumer"/>
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
<dubbo:reference id="greetingService" check="false" interface="cn.jcorn.dubbo.api.GreetingService"/>

启动dubbo-demo consumer报错：
Exception in thread "main" org.apache.dubbo.rpc.RpcException: Failed to invoke the method sayHello in the service cn.jcorn.dubbo.api.GreetingService. No provider available for the service cn.jcorn.dubbo.api.GreetingService from registry 127.0.0.1:2181 on the consumer 30.16.96.186 using the dubbo version 2.7.1. Please check if the providers have been started and registered.
at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.checkInvokers(AbstractClusterInvoker.java:265)
at org.apache.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:57)
at org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:242)
at org.apache.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:76)
at org.apache.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:57)
at org.apache.dubbo.common.bytecode.proxy0.sayHello(proxy0.java)
at cn.jcorn.dubbo.consumer.Consumer.main(Consumer.java:11)

---

我也遇到这个问题 ， 不过我跟着这个 demo https://github.com/arjenzhou/dubbo-demo.git 去覆盖（dubbo-demo-xml）项目后，问题解决了