<!--注冊服務(wù)中心的jar要多個-server-->
<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
  </dependency>

server:
  port: 7001
eureka:
  instance:
    hostname: localhost
  client:
  #聲明自己是個服務(wù)端
    registerWithEureka: false    #false表示不向注冊中心注冊自己
    fetchRegistry: false         #false表示自己就是注冊中心，職責(zé)是維護實例，不參加檢索
    serviceUrl:                  #設(shè)置eureka server的交互地址，即對外暴露的地址
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

//注意：要在類前加@EnableEurekaServer標注
@SpringBootApplication
@EnableEurekaServer
public class Eureka7001_APP {
    public static void main(String[] args) {
        SpringApplication.run(Eureka7001_APP.class,args);
    }
}

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

server:
  port: 8001
#指定注冊中心地址
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:7001/eureka/
#服務(wù)的名稱
spring:
  application:
    name: product-service

@SpringBootApplication
public class ProductApplication {
    public static void main(String[] args) {
        SpringApplication.run(ProductApplication.class, args);
    }
}

    <!--這個對于每個不是注冊中心的微服務(wù)都要添加-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

server:
  port: 9001

#指定注冊中心地址
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:7001/eureka/

#服務(wù)的名稱
spring:
  application:
    name: order-service

@SpringBootApplication
public class OrderApplication {

    public static void main(String[] args) {
        SpringApplication.run(OrderApplication.class, args);
    }
}