系统整理springCloud系列（三）服务注册

一，支付服务注册到eureka注册中心

添加配置文件

server:
  port: 8001

spring:
  application:
    name: cloud-payment-service #CLOUD-PAYMENT-SERVICE
  zipkin:
    base-url: http://localhost:9411
    sleuth:
      sampler:
      probability: 1 #采样率值介于0到1之间，1则表示全部采集

  datasource:
    type: com.alibaba.druid.pool.DruidDataSource            # 当前数据源操作类型
    driver-class-name: org.gjt.mm.mysql.Driver              # mysql驱动包
    url: jdbc:mysql://localhost:3306/db2019?useUnicode=true&characterEncoding=utf-8&useSSL=false
    username: root
    password: root

eureka:
  client:
    register-with-eureka: true
    fetchRegistry: true
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka #,http://eureka7002.com:7002/eureka  #集群版
  instance:
    instance-id: payment8001
    prefer-ip-address: true
    lease-renewal-interval-in-seconds: 1
    lease-expiration-duration-in-seconds: 2

mybatis:
  mapperLocations: classpath:mapper/*.xml
  type-aliases-package: com.atguigu.springcloud.entities    # 所有Entity别名类所在包

启动类添加

@SpringBootApplication
@EnableEurekaClient
@EnableDiscoveryClient
public class PaymentMain8001 {

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

}

服务层，控制层，此处不再列出

服务启动成功后会在注册中心添加服务

客户端可获取注册中心服务

方法

 @Resource
    private DiscoveryClient discoveryClient;

@GetMapping(value = "/payment/discovery")
    public Object discovery(){
        List<String> services = discoveryClient.getServices();
        for (String element: services) {
            log.info("************element:"+element);
        }
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        for (ServiceInstance instance: instances) {
            log.info(instance.getInstanceId()+"\t"+instance.getHost()+"\t"+instance.getPort()+"\t"+instance.getUri());
        }
        return this.discoveryClient;
    }

执行此方法，2020-07-08 10:12:27.680  INFO [cloud-payment-service,72a043381e957dec,72a043381e957dec,true] 12676 --- [nio-8001-exec-4] : ************element:cloud-payment-service
2020-07-08 10:12:27.681  INFO [cloud-payment-service,72a043381e957dec,72a043381e957dec,true] 12676 --- [nio-8001-exec-4]  payment8001    192.168.25.1    8001    http://192.168.25.1:8001