SpringCloud Eureka的使用教程

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

eureka:
 instance:
 hostname: localhost
 client:
 register-with-eureka: false #false表示不向注册中心注册自己。
 fetch-registry: false #false表示自己端就是注册中心，我的职责就是维护服务实例，并不需要去检索服务
 service-url:
 #集群指向其它eureka
 defaultZone: http://eureka7002.com:7002/eureka/
 #单机就是7001自己
 defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

@SpringBootApplication
@EnableEurekaServer
public class EurekaMain7001
{
 public static void main(String[] args) {
   SpringApplication.run(EurekaMain7001.class, args);
 }
}

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

eureka:
 client:
 #表示是否将自己注册进EurekaServer默认为true。
 register-with-eureka: true
 #是否从EurekaServer抓取已有的注册信息，默认为true。单节点无所谓，集群必须设置为true才能配合ribbon使用负载均衡
 fetchRegistry: true
 service-url:
 defaultZone: http://localhost:7001/eureka

@SpringBootApplication
@EnableEurekaClient
public class PaymentMain8001 {
 public static void main(String[] args) {
  SpringApplication.run(PaymentMain8001.class, args);
 }
}

public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";
@GetMapping("/consumer/payment/get/{id}")
public CommonResult<Payment> getPayment(@PathVariable("id") Long id)
{
 return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
}

#集群指向其它eureka
 defaultZone: http://eureka7002.com:7002/eureka/

# 集群
#defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka #