原文地址:
https://blog.csdn.net/action_to_success/article/details/79744263

org.springframework.context.ApplicationContextException: Failed to start bean 'eurekaAutoServiceRegistration'; nested exception is java.lang.NullPointerException at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:50) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:348) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:151) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:114) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:879) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:144) ~[spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.3.RELEASE.jar:1.5.3.RELEASE] at com.example.demo.FirstEkServerApplication.main(FirstEkServerApplication.java:12) [classes/:na] Caused by: java.lang.NullPointerException: null at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.maybeInitializeClient(EurekaServiceRegistry.java:56) ~[spring-cloud-netflix-eureka-client-1.3.1.RELEASE.jar:1.3.1.RELEASE] at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.register(EurekaServiceRegistry.java:37) ~[spring-cloud-netflix-eureka-client-1.3.1.RELEASE.jar:1.3.1.RELEASE] at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaAutoServiceRegistration.start(EurekaAutoServiceRegistration.java:73) ~[spring-cloud-netflix-eureka-client-1.3.1.RELEASE.jar:1.3.1.RELEASE] at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:175) ~[spring-context-4.3.8.RELEASE.jar:4.3.8.RELEASE] ... 14 common frames omitted 經反覆檢視嘗試，原理pom依賴是有順序的 我的順序是                  org.springframework.cloud spring-cloud-starter-config                  org.springframework.cloud spring-cloud-starter-ribbon org.springframework.cloud spring-cloud-starter-eureka     應該先依賴eureka 後依賴ribbon。問題解決如下順序                              org.springframework.cloud spring-cloud-starter-config org.springframework.cloud spring-cloud-starter-eureka                  org.springframework.cloud spring-cloud-starter-ribbon --------------------- 本文來自 action_to_success 的CSDN 部落格 ，全文地址請點選：https://blog.csdn.net/action_to_success/article/details/79744263?utm_source=copy