SpingCloud 2020微服务教程【12】Eureka服务发现Discovery

视频链接：2020最新版SpringCloud框架开发教程-周阳
文章源码：https://github.com/geyiwei-suzhou/cloud2020/

对于注册进eureka里面的微服务，可以通过服务发现来获得该服务的信息

1. 修改payment8001的controller
注入如下字段（org.springframework.cloud.client.discovery.DiscoveryClient）：

@Resource
private DiscoveryClient discoveryClient;

添加discovery接口：

@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;
}

2. 修改payment8001的启动类

在PaymentMain8001类上添加如下注解：

@EnableDiscoveryClient

3. 启动测试

浏览器输入：
http://localhost:8001/payment/discovery

同样的方式我们把payment8002也加上