1.首先提供IDEA的控制台报错信息：如下
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.2.2.RELEASE) 2021-02-25 19:48:37.791 INFO 2972 --- [ main] com.george.springcloud.PaymentMain9001 : No active profile set, falling back to default profiles: default 2021-02-25 19:48:38.311 WARN 2972 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'nacos-discovery' contains invalid characters, please migrate to a valid format. 2021-02-25 19:48:38.491 WARN 2972 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format. 2021-02-25 19:48:38.611 INFO 2972 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=d12ded74-3dde-36c6-bbb6-e87f1dca1ffc 2021-02-25 19:48:38.920 INFO 2972 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 9001 (http) 2021-02-25 19:48:38.930 INFO 2972 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2021-02-25 19:48:38.930 INFO 2972 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.29] 2021-02-25 19:48:39.120 INFO 2972 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2021-02-25 19:48:39.120 INFO 2972 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1309 ms 2021-02-25 19:48:40.510 WARN 2972 --- [ main] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources. 2021-02-25 19:48:40.510 INFO 2972 --- [ main] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath. 2021-02-25 19:48:40.520 WARN 2972 --- [ main] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources. 2021-02-25 19:48:40.520 INFO 2972 --- [ main] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath. 2021-02-25 19:48:40.650 INFO 2972 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor' 2021-02-25 19:48:40.879 INFO 2972 --- [ main] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 2021-02-25 19:48:42.908 INFO 2972 --- [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 18 endpoint(s) beneath base path '/actuator' 2021-02-25 19:48:42.968 INFO 2972 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 9001 (http) with context path '' 2021-02-25 19:48:43.068 ERROR 2972 --- [ main] c.a.c.n.registry.NacosServiceRegistry : nacos registry, nacos-payment-provider register failed...NacosRegistration{nacosDiscoveryProperties=NacosDiscoveryProperties{serverAddr='localhost:8848', endpoint='', namespace='', watchDelay=30000, logName='', service='nacos-payment-provider', weight=1.0, clusterName='DEFAULT', namingLoadCacheAtStart='false', metadata={preserved.register.source=SPRING_CLOUD}, registerEnabled=true, ip='192.168.1.10', networkInterface='', port=9001, secure=false, accessKey='', secretKey=''}}, java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers([localhost:8848]) tried: failed to req API:localhost:8848/nacos/v1/ns/instance. code:401 msg: <html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit mapping for /error, so you are seeing this as a fallback.</p><div id='created'>Thu Feb 25 19:48:43 CST 2021</div><div>There was an unexpected error (type=Unauthorized, status=401).</div><div>Unauthorized</div></body></html> at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:464) ~[nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:386) ~[nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.registerService(NamingProxy.java:188) ~[nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:205) ~[nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:184) ~[nacos-client-1.1.1.jar:na] at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:61) ~[spring-cloud-alibaba-nacos-discovery-2.1.0.RELEASE.jar:2.1.0.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:74) [spring-cloud-alibaba-nacos-discovery-2.1.0.RELEASE.jar:2.1.0.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:165) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at com.george.springcloud.PaymentMain9001.main(PaymentMain9001.java:16) [classes/:na] 2021-02-25 19:48:44.058 INFO 2972 --- [ main] com.george.springcloud.PaymentMain9001 : Started PaymentMain9001 in 10.381 seconds (JVM running for 12.133)2.本地用户Nacos的naming 文本信息 text
2021-02-25 19:48:40.430 INFO [main :c.a.n.c.naming] initializer namespace from System Property :null 2021-02-25 19:48:40.430 INFO [main :c.a.n.c.naming] initializer namespace from System Environment :null 2021-02-25 19:48:40.430 INFO [main :c.a.n.c.naming] initializer namespace from System Property :null 2021-02-25 19:48:42.978 INFO [main :c.a.n.c.naming] [BEAT] adding beat: {"cluster":"DEFAULT","ip":"192.168.1.10","metadata":{"preserved.register.source":"SPRING_CLOUD"},"period":5000,"port":9001,"scheduled":false,"serviceName":"DEFAULT_GROUP@@nacos-payment-provider","stopped":false,"weight":1.0} to beat map. 2021-02-25 19:48:43.048 INFO [main :c.a.n.c.naming] [REGISTER-SERVICE] public registering service DEFAULT_GROUP@@nacos-payment-provider with instance: {"clusterName":"DEFAULT","enabled":true,"ephemeral":true,"healthy":true,"instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ip":"192.168.1.10","ipDeleteTimeout":30000,"metadata":{"preserved.register.source":"SPRING_CLOUD"},"port":9001,"weight":1.0} 2021-02-25 19:48:43.068 ERROR [com.alibaba.nacos.naming.beat.sender:c.a.n.c.naming] request localhost:8848 failed. com.alibaba.nacos.api.exception.NacosException: failed to req API:localhost:8848/nacos/v1/ns/instance/beat. code:401 msg: <html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit mapping for /error, so you are seeing this as a fallback.</p><div id='created'>Thu Feb 25 19:48:43 CST 2021</div><div>There was an unexpected error (type=Unauthorized, status=401).</div><div>Unauthorized</div></body></html> at com.alibaba.nacos.client.naming.net.NamingProxy.callServer(NamingProxy.java:424) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:451) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:386) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.sendBeat(NamingProxy.java:309) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.beat.BeatReactor$BeatTask.run(BeatReactor.java:92) [nacos-client-1.1.1.jar:na] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_131] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_131] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_131] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131] 2021-02-25 19:48:43.068 ERROR [main :c.a.n.c.naming] request localhost:8848 failed. com.alibaba.nacos.api.exception.NacosException: failed to req API:localhost:8848/nacos/v1/ns/instance. code:401 msg: <html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit mapping for /error, so you are seeing this as a fallback.</p><div id='created'>Thu Feb 25 19:48:43 CST 2021</div><div>There was an unexpected error (type=Unauthorized, status=401).</div><div>Unauthorized</div></body></html> at com.alibaba.nacos.client.naming.net.NamingProxy.callServer(NamingProxy.java:424) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:451) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:386) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.registerService(NamingProxy.java:188) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:205) [nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:184) [nacos-client-1.1.1.jar:na] at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:61) [spring-cloud-alibaba-nacos-discovery-2.1.0.RELEASE.jar:2.1.0.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:74) [spring-cloud-alibaba-nacos-discovery-2.1.0.RELEASE.jar:2.1.0.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) [spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:165) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) [spring-context-5.2.2.RELEASE.jar:5.2.2.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.2.RELEASE.jar:2.2.2.RELEASE] at com.george.springcloud.PaymentMain9001.main(PaymentMain9001.java:16) [classes/:na] 2021-02-25 19:48:43.068 ERROR [com.alibaba.nacos.naming.beat.sender:c.a.n.c.naming] [CLIENT-BEAT] failed to send beat: {"cluster":"DEFAULT","ip":"192.168.1.10","metadata":{"preserved.register.source":"SPRING_CLOUD"},"period":5000,"port":9001,"scheduled":false,"serviceName":"DEFAULT_GROUP@@nacos-payment-provider","stopped":false,"weight":1.0} java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance/beat after all servers([localhost:8848]) tried: failed to req API:localhost:8848/nacos/v1/ns/instance/beat. code:401 msg: <html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit mapping for /error, so you are seeing this as a fallback.</p><div id='created'>Thu Feb 25 19:48:43 CST 2021</div><div>There was an unexpected error (type=Unauthorized, status=401).</div><div>Unauthorized</div></body></html> at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:464) ~[nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:386) ~[nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.sendBeat(NamingProxy.java:309) ~[nacos-client-1.1.1.jar:na] at com.alibaba.nacos.client.naming.beat.BeatReactor$BeatTask.run(BeatReactor.java:92) [nacos-client-1.1.1.jar:na] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_131] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_131] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_131] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_131] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]相关YML
server: port: 9001 spring: application: name: nacos-payment-provider cloud: nacos: discovery: server-addr: localhost:8848 #配置nacos地址 management: endpoints: web: exposure: include: "*"
上图 可证 本地Nacos 成功启动；
解决方法： 官网明确给出2021年2月5号Nacos的稳定客户端版本,替换本地原先更新的1.1.4版本 用2.0.0-BATA版本 ，重新安装Nacos-server-2.0.0-BATA
github下载地址：https://github.com/alibaba/nacos/releases/tag/2.0.0-BETA 重新安装即可;
cmd下操作，启动Nacos, 出现 DB is null 该描述性 错误的，解决该问题的方式： 由于该新下载的包为内置配置 模式是 cluster ， 我个人玩的是本地 单机版 所以改成 standalone 即可； standalones 也是会报上述错误；
在bin目录下，找到startup.cmd 用文档编辑方式打开，即可看到，修改即可。如果您需要配置集群 cluster ，需要添加本地 内置数据库，该本分内容后续更新。
改完上述内容，重新启动Nacos,在启动配置好的9001 需要注册进Nacos的nacos-payment-provider服务即可。
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标签： #Nacos之 #springcloud #Alibaba #可以启动正常 #解决服务注册不进
