首先说一下我注册不成功的原因
eureka注册中心的依赖

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

client依赖

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

细心的读者已经发现，server和client依赖不对应。。。

client应该为

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

一失眼 成一天恨。。。

通过这个错误，整理下在网上发现的一些注册不成功的解决思路

第一步：检查pom文件

指定cloud的版本，eureka应该根据cloud的版本自动依赖相应版本

cloud的版本依赖

			<dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>Hoxton.SR1</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement>

eureka的server和client依赖

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

第二步：检查yml文件

server模块的配置

eureka:instance:hostname: localhostclient:registerWithEureka: falsefetchRegistry: falseserviceUrl:defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

client配置

eureka:client:registerWithEureka: truefetchRegistry: trueserviceUrl:defaultZone: http://localhost:7001/eureka/

第三步：主启动类

server模块，主启动类添加注解

@SpringBootApplication
@EnableEurekaServer

client模块，主启动类添加注解

@SpringBootApplication
@EnableEurekaClient

第四步：运行测试