![failed to req API:/nacos/v1/ns/instance/list after all servers([localhost:8848]) tried: java.net.Con](http://www.mshxw.com/aiimages/31/904534.png "failed to req API:/nacos/v1/ns/instance/list after all servers([localhost:8848]) tried: java.net.Con")
2021-07-18 21:14:59.949 ERROR 9064 --- [ restartedMain] com.alibaba.nacos.client.naming : request: /nacos/v1/ns/instance/list failed, servers: [localhost:8848], code: 500, msg: Connection refused: connect 2021-07-18 21:14:59.950 ERROR 9064 --- [ restartedMain] com.alibaba.nacos.client.naming : [NA] failed to update serviceName: DEFAULT_GROUP@@gateway com.alibaba.nacos.api.exception.NacosException: failed to req API:/nacos/v1/ns/instance/list after all servers([localhost:8848]) tried: java.net.ConnectException: Connection refused: connect at com.alibaba.nacos.client.naming.net.NamingProxy.reqApi(NamingProxy.java:556) ~[nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqApi(NamingProxy.java:498) ~[nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqApi(NamingProxy.java:493) ~[nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.queryList(NamingProxy.java:407) ~[nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.core.HostReactor.updateService(HostReactor.java:378) [nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.core.HostReactor.updateServiceNow(HostReactor.java:341) [nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.core.HostReactor.getServiceInfo(HostReactor.java:316) [nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.core.HostReactor.subscribe(HostReactor.java:139) [nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.subscribe(NacosNamingService.java:457) [nacos-client-1.4.1.jar:na] at com.alibaba.cloud.nacos.discovery.NacosWatch.start(NacosWatch.java:123) [spring-cloud-starter-alibaba-nacos-discovery-2.2.5.RELEASE.jar:2.2.5.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:895) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554) [spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE] at cn.daqiang.gateway.GatewayApplication.main(GatewayApplication.java:12) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.3.7.RELEASE.jar:2.3.7.RELEASE]
这个错误是对nacos的dataid命名不规范导致的
我原来的dataid是gateway没有后缀，把它改成gateway.yml就可以了
