解决：[DUBBO] Failed to start NettyClient LAPTOP-OA5V6BNU/10.21.67.39 connect to the server /192.168.问题

报错：

2018-12-24 15:53:59.752  WARN 36460 --- [           main] c.a.d.remoting.transport.AbstractClient  :  [DUBBO] Failed to start NettyClient LAPTOP-OA5V6BNU/10.21.67.39 connect to the server /192.168.2.218:20881 (check == false, ignore and retry later!), cause: client(url: dubbo://192.168.2.218:20881/com.ai.rai.group.system.api.IPositionStaffApi?anyhost=true&application=workflow-service-provider&check=false&codec=dubbo&default.check=false&default.connections=5&default.group=devGroup&default.retries=0&default.timeout=30000&dubbo=2.6.1&generic=false&heartbeat=60000&interface=com.ai.rai.group.system.api.IPositionStaffApi&methods=queryPositionStaffAndZjList,queryPositionStaffTree,queryStaffInfo,queryPositionStaffInfo,queryAllCityCode,queryPositionStaffListOrder,queryPositionStaffList&pid=36460®ister.ip=10.21.67.39&remote.timestamp=1545635345860&revision=1.0.0&side=consumer&status=server×tamp=1545638036648&version=1.0.0) failed to connect to server /192.168.2.218:20881, error message is:Connection refused: no further information, dubbo version: 2.6.1, current host: 10.21.67.39

com.alibaba.dubbo.remoting.RemotingException: client(url: dubbo://192.168.2.218:20881/com.ai.rai.group.system.api.IPositionStaffApi?anyhost=true&application=workflow-service-provider&check=false&codec=dubbo&default.check=false&default.connections=5&default.group=devGroup&default.retries=0&default.timeout=30000&dubbo=2.6.1&generic=false&heartbeat=60000&interface=com.ai.rai.group.system.api.IPositionStaffApi&methods=queryPositionStaffAndZjList,queryPositionStaffTree,queryStaffInfo,queryPositionStaffInfo,queryAllCityCode,queryPositionStaffListOrder,queryPositionStaffList&pid=36460®ister.ip=10.21.67.39&remote.timestamp=1545635345860&revision=1.0.0&side=consumer&status=server×tamp=1545638036648&version=1.0.0) failed to connect to server /192.168.2.218:20881, error message is:Connection refused: no further information
	at com.alibaba.dubbo.remoting.transport.netty.NettyClient.doConnect(NettyClient.java:122) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.transport.AbstractClient.connect(AbstractClient.java:266) ~[dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.transport.AbstractClient.(AbstractClient.java:89) ~[dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.transport.netty.NettyClient.(NettyClient.java:59) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.transport.netty.NettyTransporter.connect(NettyTransporter.java:35) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.Transporter$Adaptive.connect(Transporter$Adaptive.java) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.Transporters.connect(Transporters.java:75) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchanger.connect(HeaderExchanger.java:38) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.remoting.exchange.Exchangers.connect(Exchangers.java:109) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.initClient(DubboProtocol.java:405) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.getClients(DubboProtocol.java:352) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol.refer(DubboProtocol.java:332) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:100) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:65) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:65) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.integration.RegistryDirectory.toInvokers(RegistryDirectory.java:385) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.integration.RegistryDirectory.refreshInvoker(RegistryDirectory.java:251) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.integration.RegistryDirectory.notify(RegistryDirectory.java:221) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.support.AbstractRegistry.notify(AbstractRegistry.java:407) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.support.FailbackRegistry.doNotify(FailbackRegistry.java:273) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.support.FailbackRegistry.notify(FailbackRegistry.java:259) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistry.doSubscribe(ZookeeperRegistry.java:182) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.support.FailbackRegistry.subscribe(FailbackRegistry.java:189) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.integration.RegistryDirectory.subscribe(RegistryDirectory.java:159) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.integration.RegistryProtocol.doRefer(RegistryProtocol.java:302) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.registry.integration.RegistryProtocol.refer(RegistryProtocol.java:283) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper.refer(ProtocolFilterWrapper.java:98) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.qos.protocol.QosProtocolWrapper.refer(QosProtocolWrapper.java:63) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.protocol.ProtocolListenerWrapper.refer(ProtocolListenerWrapper.java:63) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.rpc.Protocol$Adaptive.refer(Protocol$Adaptive.java) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.config.ReferenceConfig.createProxy(ReferenceConfig.java:394) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.config.ReferenceConfig.init(ReferenceConfig.java:333) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.config.ReferenceConfig.get(ReferenceConfig.java:163) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.config.spring.ReferenceBean.getObject(ReferenceBean.java:65) [dubbo-2.6.1.jar:2.6.1]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
	at com.alibaba.dubbo.config.AbstractConfig.toString(AbstractConfig.java:473) [dubbo-2.6.1.jar:2.6.1]
	at java.lang.String.valueOf(String.java:2994) [na:1.8.0_171]
	at java.lang.StringBuilder.append(StringBuilder.java:131) [na:1.8.0_171]
	at com.alibaba.dubbo.config.spring.beans.factory.annotation.AbstractAnnotationConfigBeanBuilder.build(AbstractAnnotationConfigBeanBuilder.java:75) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.buildReferenceBean(ReferenceAnnotationBeanPostProcessor.java:345) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.access$100(ReferenceAnnotationBeanPostProcessor.java:61) [dubbo-2.6.1.jar:2.6.1]
	at com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor$ReferenceFieldElement.inject(ReferenceAnnotationBeanPostProcessor.java:323) [dubbo-2.6.1.jar:2.6.1]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at com.alibaba.dubbo.config.spring.beans.factory.annotation.ReferenceAnnotationBeanPostProcessor.postProcessPropertyValues(ReferenceAnnotationBeanPostProcessor.java:88) [dubbo-2.6.1.jar:2.6.1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:518) [spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:496) [spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:627) [spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:169) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:318) [spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) [spring-beans-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) [spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) [spring-context-4.3.14.RELEASE.jar:4.3.14.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
	at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:134) [spring-boot-1.5.10.RELEASE.jar:1.5.10.RELEASE]
	at com.ai.rai.group.workflow.WorkflowBootStartApplication.main(WorkflowBootStartApplication.java:45) [classes/:na]
Caused by: java.net.ConnectException: Connection refused: no further information
	at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[na:1.8.0_171]
	at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) ~[na:1.8.0_171]
	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.connect(NioClientSocketPipelineSink.java:384) ~[netty-3.2.5.Final.jar:na]
	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:354) ~[netty-3.2.5.Final.jar:na]
	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:276) ~[netty-3.2.5.Final.jar:na]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_171]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_171]
	at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_171]

 

 这种问题出现一般原因

1.是Dubbo服务挂了，检查下服务器看是否存在；

2.是在：

 

这个地方没有指定自己的唯一标识，加上就行了：-Ddubbo.provider.group=lsw -Ddubbo.consumer.group=lsw；

3.网络冲突，可能同时加了有线并且连着wify（win10是可以的其他版本windows我不知道），断开一个就好了；