SpringCloud实现Eureka服务注册与发现

<!--注册服务中心的jar要多个-server-->
<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
  </dependency>

server:
  port: 7001
eureka:
  instance:
    hostname: localhost
  client:
  #声明自己是个服务端
    reGISterWithEureka: false    #false表示不向注册中心注册自己
    fetchRegistry: false         #false表示自己就是注册中心，职责是维护实例，不参加检索
    serviceUrl:                  #设置eureka server的交互地址，即对外暴露的地址
      defaultZone: Http://${eureka.instance.hostname}:${server.port}/eureka/

//注意：要在类前加@EnableEurekaServer标注
@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
#指定注册中心地址
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:7001/eureka/
#服务的名称
spring:
  application:
    name: product-service

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

    <!--这个对于每个不是注册中心的微服务都要添加-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

server:
  port: 9001

#指定注册中心地址
eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:7001/eureka/

#服务的名称
spring:
  application:
    name: order-service

@SpringBootApplication
public class OrderApplication {

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