1.pom文件

springboot版本不要太高会报错，我这里用的2.0.1的版本

2.配置文件

---
spring:
  application:
    name: ad-eureka
  profiles: server1
server:
  port: 8000
eureka:
  instance:
    hostname: server1
    prefer-ip-address: false
  client:
    service-url:
      defaultZone: http://server2:8001/eureka/,http://server3:8002/eureka/

---
spring:
  application:
    name: ad-eureka
  profiles: server2
server:
  port: 8001
eureka:
  instance:
    hostname: server2
    prefer-ip-address: false
  client:
    service-url:
      defaultZone: http://server1:8000/eureka/,http://server3:8002/eureka/

---
spring:
  application:
    name: ad-eureka
  profiles: server3
server:
  port: 8002
eureka:
  instance:
    hostname: server3
    prefer-ip-address: false
  client:
    service-url:
      defaultZone: http://server1:8000/eureka/,http://server2:8001/eureka/

3.修改host文件

4.简单的项目打包

先进入项目文件下启动cmd

执行命令

mvn clean package -Dmaven.test.skip=true -U

启动第一个服务，这里会报错，这时候不存在servr2和server3
当然可以以相同的方式启动server2,把最后的server1改成server2或server3

java -jar ad-eureka-1.0-SNAPSHOT.jar --spring.profiles.active=server1

不过还是能进入服务注册中心就是了