springboot踩坑日记—nacos: Error watching Nacos Service change

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本文记录了在SpringBoot项目中使用Nacos作为配置中心时遇到的错误“Error watching Nacos Service change”，详细解析了错误代码及可能的原因，并提供了解决方案，指出重新安装Nacos版本可以解决问题。

springboot踩坑日记—nacos: Error watching Nacos Service change

Spring Boot :: (v2.1.5.RELEASE)

错误代码：

07-30 10:47:37.148 ERROR [o.s.cloud.alibaba.nacos.discovery.NacosWatch] - Error watching Nacos Service change
java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/service/list after all servers([106.15.89.158:8848]) tried: failed to req API:http://106.15.89.111:8848/nacos/v1/ns/service/list. code:503 msg: server is DOWN now, please try again later!
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:380)
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:346)
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:294)
at com.alibaba.nacos.client.naming.net.NamingProxy.getServiceList(NamingProxy.java:276)
at com.alibaba.nacos.client.naming.net.NamingProxy.getServiceList(NamingProxy.java:252)
at com.alibaba.nacos.client.naming.NacosNamingService.getServicesOfServer(NacosNamingService.java:525)
at org.springframework.cloud.alibaba.nacos.discovery.NacosWatch.nacosServicesWatch(NacosWatch.java:127)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at java.util.concurrent.Executors $R u n n a b l e A d a p t e r . c a l l (E x e c u t o r s . j a v a : 511) a t j a v a . u t i l . c o n c u r r e n t . F u t u r e T a s k . r u n A n d R e s e t$ $KaTeX parse error: Can't use function '$' in math mode at position 147: \dotseadPoolExecutor$̲ScheduledFuture\dots$ $c a p t u r e (F u t u r e T a s k . j a v a : 308) a t j a v a . u t i l . c o n c u r r e n t . F u t u r e T a s k . r u n A n d R e s e t (F u t u r e T a s k . j a v a) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.access $301 (S c h e d u l e d T h r e a d P o o l E x e c u t o r . j a v a : 180) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutorRunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset$ $KaTeX parse error: Can't use function '$' in math mode at position 147: \dotseadPoolExecutor$̲ScheduledFuture\dots$ $c a p t u r e (F u t u r e T a s k . j a v a : 308) a t j a v a . u t i l . c o n c u r r e n t . F u t u r e T a s k . r u n A n d R e s e t (F u t u r e T a s k . j a v a) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.access $301 (S c h e d u l e d T h r e a d P o o l E x e c u t o r . j a v a : 180) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutorRunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset$ $KaTeX parse error: Can't use function '$' in math mode at position 147: \dotseadPoolExecutor$̲ScheduledFuture\dots$ $c a p t u r e (F u t u r e T a s k . j a v a : 308) a t j a v a . u t i l . c o n c u r r e n t . F u t u r e T a s k . r u n A n d R e s e t (F u t u r e T a s k . j a v a) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.access $301 (S c h e d u l e d T h r e a d P o o l E x e c u t o r . j a v a : 180) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutorRunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset$ $KaTeX parse error: Can't use function '$' in math mode at position 147: \dotseadPoolExecutor$̲ScheduledFuture\dots$ $c a p t u r e (F u t u r e T a s k . j a v a : 308) a t j a v a . u t i l . c o n c u r r e n t . F u t u r e T a s k . r u n A n d R e s e t (F u t u r e T a s k . j a v a) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.access $301 (S c h e d u l e d T h r e a d P o o l E x e c u t o r . j a v a : 180) a t j a v a . u t i l . c o n c u r r e n t . S c h e d u l e d T h r e a d P o o l E x e c u t o r$ ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

nacos服务更改时出错

错误原因：

不知道什么原因,重装了一个版本的nacos就可以了

详情看一下这个: https://www.cnblogs.com/FlyAway2013/p/10849307.html

5 条评论

hellions 2020.04.29
除了版本不兼容外，还有其他可能：关键字问题、配置信息问题，参考： http://www.51feir.com/article/48 你这里报错 code:503 msg: server is DOWN now, please try again later! 应该是 nacos服务器挂了啊
- weixin_52032756回复刘彦青-Yannis 2021.01.20
  我重启没好重装也没好
- 刘彦青-Yannis回复hellions 2020.04.29
  [reply]hellions[/reply]哈哈所以重启就好了