spingcloud demo依赖于SpringBoot实现,eureka服务注册中心
1.启动EurekaServerApplication，访问http://localhost:8761/
2.启动EurekaClientApplication，访问http://localhost:9000/service-instances/eureka-client 返回实例信息，如下
[ { "host":"host.docker.internal", "port":9000, "metadata":{ "management.port":"9000" }, "secure":false, "uri":"http://host.docker.internal:9000", "instanceId":"host.docker.internal:eureka-client:9000", "serviceId":"EUREKA-CLIENT", "instanceInfo":{ "instanceId":"host.docker.internal:eureka-client:9000", "app":"EUREKA-CLIENT", "appGroupName":null, "ipAddr":"192.168.0.106", "sid":"na", "homePageUrl":"http://host.docker.internal:9000/", "statusPageUrl":"http://host.docker.internal:9000/actuator/info", "healthCheckUrl":"http://host.docker.internal:9000/actuator/health", "secureHealthCheckUrl":null, "vipAddress":"eureka-client", "secureVipAddress":"eureka-client", "countryId":1, "dataCenterInfo":{ "@class":"com.netflix.appinfo.InstanceInfo$DefaultDataCenterInfo", "name":"MyOwn" }, "hostName":"host.docker.internal", "status":"UP", "overriddenStatus":"UNKNOWN", "leaseInfo":{ "renewalIntervalInSecs":30, "durationInSecs":90, "registrationTimestamp":1567328692390, "lastRenewalTimestamp":1567328841752, "evictionTimestamp":0, "serviceUpTimestamp":1567328691796 }, "isCoordinatingDiscoveryServer":false, "metadata":{ "management.port":"9000" }, "lastUpdatedTimestamp":1567328692391, "lastDirtyTimestamp":1567328691742, "actionType":"ADDED", "asgName":null }, "scheme":null } ]