（黑马十次方项目day07）The bean 'eurekaRegistration', defined in class path resource

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APPLICATION FAILED TO START
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Description:

The bean 'eurekaRegistration', defined in class path resource [org/springframework/cloud/netflix/eureka/EurekaClientAutoConfiguration$EurekaClientConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/cloud/netflix/eureka/EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.class] and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true


进程已结束，退出代码 1

意思是说 eurekaRegistration 重复注册了，

Action：可以考虑重命名其中一个bean，或者通过设置spring.main.allow-bean-definition- override =true来启用覆盖

网上说可能是spring boot 和 spring cloud 版本冲突，具体版本参考Spring 官方对应版本地址：  (https://start.spring.io/actuator/info)

spring boot 和 spring cloud 大版本对应

Spring Boot	Spring Cloud
1.2.x	Angel版本
1.3.x	Brixton版本
1.4.x stripes	Camden版本
1.5.x	Dalston版本、Edgware版本
2.0.x	Finchley版本
2.1.x	Greenwich.SR2

但是此次问题是maven依赖导错了。

之前导的是：

<dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-netflix-eureka-server</artifactId>
</dependency>

改正： 

<dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>