gang0713 edited a comment on issue #8225:
URL: https://github.com/apache/dubbo/issues/8225#issuecomment-878905150


   在nacos控制台看到服务都注册上来了,但是不加URl就访问不了。
   
![image](https://user-images.githubusercontent.com/1773414/125574013-8db90497-f418-4a4d-b15e-ccf79110d8ac.png)
   
   Failed to invoke the method findByNameSystemProperty in the service 
com.xykq.modules.system.services.ISystemPropertyService. No provider available 
for the service com.xykq.modules.system.services.ISystemPropertyService:1.0.0 
from registry 127.0.0.1:8848 on the consumer 192.168.0.112 using the dubbo 
version 3.0.1. Please check if the providers have been started and registered.
        at 
org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.checkInvokers(AbstractClusterInvoker.java:288)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.support.FailoverClusterInvoker.doInvoke(FailoverClusterInvoker.java:59)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.support.AbstractClusterInvoker.invoke(AbstractClusterInvoker.java:265)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:89) 
~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:82)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.protocol.dubbo.filter.FutureFilter.invoke(FutureFilter.java:51)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:82)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.filter.support.ConsumerContextFilter.invoke(ConsumerContextFilter.java:101)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.filter.FilterChainBuilder$FilterChainNode.invoke(FilterChainBuilder.java:82)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.support.wrapper.AbstractCluster$ClusterFilterInvoker.invoke(AbstractCluster.java:93)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker.invoke(MockClusterInvoker.java:93)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.registry.client.migration.MigrationInvoker.invoke(MigrationInvoker.java:276)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.rpc.proxy.InvokerInvocationHandler.invoke(InvokerInvocationHandler.java:95)
 ~[dubbo-3.0.1.jar:3.0.1]
        at 
org.apache.dubbo.common.bytecode.proxy2.findByNameSystemProperty(proxy2.java) 
~[dubbo-3.0.1.jar:3.0.1]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[?:1.8.0_201]
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
~[?:1.8.0_201]
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 ~[?:1.8.0_201]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_201]
        at 
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
 ~[spring-aop-5.2.15.RELEASE.jar:5.2.15.RELEASE]
        at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:205)
 ~[spring-aop-5.2.15.RELEASE.jar:5.2.15.RELEASE]
        at com.sun.proxy.$Proxy149.findByNameSystemProperty(Unknown Source) 
~[?:?]


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