sakka6868 opened a new issue #8652:
URL: https://github.com/apache/dubbo/issues/8652


   ### Environment
   
   * Dubbo version: 3.0.0
   * Operating System version: win10
   * Java version: open-jdk-8
   
   ### Steps to reproduce this issue
   
![image](https://user-images.githubusercontent.com/23228684/131674056-138253dc-d224-4a44-a7e8-8576dc041738.png)
   在dubbo3.0 我想使用nacos作为配置中心,但是一直注册不成功
   `[01/09/21 08:51:13:013 CST] main ERROR nacos.NacosRegistry:  [DUBBO] 
Request nacos server failed: , dubbo version: 3.0.0, current host: 192.168.1.3
   ErrCode:500, ErrMsg:Request nacos server failed: 
        at 
com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.requestToServer(NamingGrpcClientProxy.java:213)
        at 
com.alibaba.nacos.client.naming.remote.gprc.NamingGrpcClientProxy.registerService(NamingGrpcClientProxy.java:101)
        at 
com.alibaba.nacos.client.naming.remote.NamingClientProxyDelegate.registerService(NamingClientProxyDelegate.java:95)
        at 
com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:139)
        at 
org.apache.dubbo.registry.nacos.NacosNamingServiceWrapper.registerInstance(NacosNamingServiceWrapper.java:57)
        at 
org.apache.dubbo.registry.nacos.NacosRegistry.lambda$doRegister$1(NacosRegistry.java:164)
        at 
org.apache.dubbo.registry.nacos.NacosRegistry$$Lambda$145/16664573.callback(Unknown
 Source)
        at 
org.apache.dubbo.registry.nacos.NacosRegistry.execute(NacosRegistry.java:567)
        at 
org.apache.dubbo.registry.nacos.NacosRegistry.doRegister(NacosRegistry.java:164)
        at 
org.apache.dubbo.registry.support.FailbackRegistry.register(FailbackRegistry.java:205)
        at 
org.apache.dubbo.registry.ListenerRegistryWrapper.register(ListenerRegistryWrapper.java:58)
        at 
org.apache.dubbo.registry.integration.RegistryProtocol.register(RegistryProtocol.java:183)
        at 
org.apache.dubbo.registry.integration.RegistryProtocol.export(RegistryProtocol.java:219)
        at 
org.apache.dubbo.rpc.protocol.ProtocolListenerWrapper.export(ProtocolListenerWrapper.java:64)
        at 
org.apache.dubbo.rpc.cluster.filter.ProtocolFilterWrapper.export(ProtocolFilterWrapper.java:60)
        at 
org.apache.dubbo.qos.protocol.QosProtocolWrapper.export(QosProtocolWrapper.java:64)
        at org.apache.dubbo.rpc.Protocol$Adaptive.export(Protocol$Adaptive.java)
        at 
org.apache.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:511)
        at 
org.apache.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:344)
        at 
org.apache.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:320)
        at org.apache.dubbo.config.ServiceConfig.export(ServiceConfig.java:219)
        at 
org.apache.dubbo.config.bootstrap.DubboBootstrap.exportServices(DubboBootstrap.java:1295)`


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