Remember to test nacos once, the configuration is fine, but the startup fails, and the methods released by others are not easy to use
SpirngBoot version:
2.3.9.RELEASE
Spring Cloud version:
Hoxton.SR10
Nacos version:
1.4.3
The exception is:
com.alibaba.nacos.api.exception.NacosException: failed to req API:/nacos/v1/ns/instance after all servers([localhost:8848]) tried: ErrCode:400, ErrMsg:<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'>Mon Jun 26 19:52:22 CST 2023</div><div>There was an unexpected error (type=Bad Request, status=400).</div>< div>receive invalid redirect request from peer 127.0.0.1</div></body></html> 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.registerService(NamingProxy.java:246) ~[nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:212) ~[nacos-client-1.4.1.jar:na] at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:74) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.5.RELEASE.jar:2.2.5.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) [spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:78) [spring-cloud-starter-alibaba-nacos-discovery-2.2.5.RELEASE.jar:2.2.5.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) [spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) [spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) [spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) [spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:46) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:895) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554) [spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at cn.itcast.order.OrderApplication.main(OrderApplication.java:19) [classes/:na] 06-26 19:52:22:742 WARN 13828 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - canceling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'web ServerStartStop'; nested exception is java .lang.reflect.UndeclaredThrowableException 06-26 19:52:32:636 INFO 13828 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor' 06-26 19:52:33:206 INFO 13828 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 06-26 19:52:33:217 INFO 13828 --- [ main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 06-26 19:52:33:223 ERROR 13828 --- [ main] o.s.boot.SpringApplication : Application run failed org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is java.lang.reflect.UndeclaredThrowableException at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:185) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:895) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at cn.itcast.order.OrderApplication.main(OrderApplication.java:19) [classes/:na] Caused by: java.lang.reflect.UndeclaredThrowableException: null at org.springframework.util.ReflectionUtils.rethrowRuntimeException(ReflectionUtils.java:147) ~[spring-core-5.2.13.RELEASE.jar:5.2.13.RELEASE] at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:83) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.5.RELEASE.jar:2.2.5.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) ~[spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:78) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.5.RELEASE.jar:2.2.5.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) ~[spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) ~[spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) ~[spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) ~[spring-cloud-commons-2.2.7.RELEASE.jar:2.2.7.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:46) ~[spring-boot-2.3.9.RELEASE.jar:2.3.9.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182) ~[spring-context-5.2.13.RELEASE.jar:5.2.13.RELEASE] ... 14 common frames omitted Caused by: com.alibaba.nacos.api.exception.NacosException: failed to req API:/nacos/v1/ns/instance after all servers([localhost:8848]) tried: ErrCode:400, ErrMsg:<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'>Mon Jun 26 19:52:22 CST 2023</div><div>There was an unexpected error (type=Bad Request, status=400).</div>< div>receive invalid redirect request from peer 127.0.0.1</div></body></html> 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.registerService(NamingProxy.java:246) ~[nacos-client-1.4.1.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:212) ~[nacos-client-1.4.1.jar:na] at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:74) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.5.RELEASE.jar:2.2.5.RELEASE] ... 27 common frames omitted
Solution:
spring:
application:
name: Change a name
The code is white, the specific reason cannot be analyzed, change the name to solve it, welcome to leave a message to share