Eureka注册中心的使用-入门

导入依赖

    org.springframework.cloud
    spring-cloud-starter-netflix-eureka-server

启动类注解

// 声明为eurekaServer
@EnableEurekaServer
@SpringBootApplication
public class EurekaDemoApplication {
    public static void main(String[] args) {
        SpringApplication.run(EurekaDemoApplication.class, args);
    }

}

配置注册中心

# eureka 注册中心配置
eureka:
  instance:
    hostname: localhost
  client:
    register-with-eureka: false
    fetch-registry: false
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka

启动类

@SpringBootApplication
// 启用Eureka客户端
@EnableEurekaClient
// 启用服务发现
@EnableDiscoveryClient
public class MalldemoApplication {

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

}

配置

server:
  port: 8081
eureka:
  client:
    service-url:
      # 服务注册中心地址
      defaultZone: http://localhost:8090/eureka/
  # 注册实例
  instance:
    prefer-ip-address: true
    instance-id: ${spring.cloud.client.ip-address}:${server.port}
    appname: mall-service-provider
    # 注册主机name
    hostname: mall-service-provider
spring:
  cloud:
    discovery:
      enabled: true
  application:
    name: mall-service-provider

配置

server:
  port: 8082
eureka:
  client:
    service-url:
      # 服务注册中心地址
      defaultZone: http://localhost:8090/eureka/
    # feign demo 是消费者,只拉取服务，如果置为false 会找不到服务
    fetch-registry: true
    # 不注册到注册中心
    register-with-eureka: false
spring:
  cloud:
    discovery:
      enabled: true
  application:
    name: mall-consumer