服务注册与发现(eureka)

本文springboot版本：2.0.2.RELEASE，springcloud版本:Finchley.RC1

创建eureka server

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

启动方法加上@EnableEurekaServer注解

@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {

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

项目配置文件：bootstrap.yml

server:
    port: 8761

spring:
    application:
        name: eureka-server

eureka:
    instance:
        hostname: localhost
    client:
      registerWithEureka: false
      fetchRegistry: false
      serviceUrl.defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
#      关闭eureka自我保护机制
    server:
      enable-self-preservation: false
      eviction-interval-timer-in-ms: 3000

然后启动项目，就有一个eureka server了，访问UI:http://localhost:8761

定制UI：http://springcloud.cn/view/250

创建eureka client

maven依赖：

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

项目配置文件：bootstrap.yml

server:
    port: 8080

spring:
    application:
        name: eureka-client
    profiles:
      active: dev
    cloud:
        config:
            profile: ${spring.profiles.active} #dev,test,staging,prod
            discovery:
                enabled: true  # 默认false，设为true表示使用注册中心中的configserver配置而不自己配置configserver的uri
                serviceId: config-server  # 指定config server在服务发现中的serviceId，默认为：configserver
eureka:
    client:
        serviceUrl.defaultZone: http://127.0.0.1:8761/eureka
    instance:
        hostname: localhost