REST API 介绍

Eureka 在 GitHub 的 wiki 上专门写了一篇《 Eureka REST operations》来介绍 Eureka Server 的 REST API 接口，Spring Cloud Netfix Eureka 跟 Spring Boot 适配之后，提供的 REST API 与原始的 REST API 有一点点不同，其路径中的 {version} 值固定为 eureka，其他的变化不大，如下图所示：

REST API 实战

查询所有应用实例

http://localhost:8761/eureka/apps

根据 AppId 查询

http://localhost:8761/eureka/apps/demo-order

根据 AppId 及 instanceId 查询

http://localhost:8761/eureka/apps/demo-order/guoqingsongmbp:demo-order:11100

根据 instanceId 查询

http://localhost:8761/eureka/instances/guoqingsongmbp:demo-order:11100

注册新应用实例

http://localhost:8761/eureka/apps/demo-order2

请求体参数（XML 格式）：

<instance>
    <instanceId>demo-order2:11101</instanceId>
    <hostName>127.0.0.1</hostName>
    <app>DEMO-ORDER2</app>
    <ipAddr>127.0.0.1</ipAddr>
    <status>UP</status>
    <overriddenstatus>UNKNOWN</overriddenstatus>
    <port enabled="true">11101</port>
    <securePort enabled="false">443</securePort>
    <countryId>1</countryId>
    <dataCenterInfo class="com.netflix.appinfo.InstanceInfo$DefaultDataCenterInfo">
        <name>MyOwn</name>
    </dataCenterInfo>
    <metadata class="java.util.Collections$EmptyMap"/>
    <vipAddress>demo-order2</vipAddress>
    <secureVipAddress>demo-order2</secureVipAddress>
    <isCoordinatingDiscoveryServer>false</isCoordinatingDiscoveryServer>
    <lastUpdatedTimestamp>1540186708769</lastUpdatedTimestamp>
    <lastDirtyTimestamp>1540186708747</lastDirtyTimestamp>
</instance>

请求体参数（JSON 格式）：

{
    "instance": {
        "instanceId": "demo-order2:11101",
        "app": "demo-order2",
        "appGroutName": null,
        "ipAddr": "127.0.0.1",
        "sid": "na",
        "homePageUrl": null,
        "statusPageUrl": null,
        "healthCheckUrl": null,
        "secureHealthCheckUrl": null,
        "vipAddress": "demo-order2",
        "secureVipAddress": "demo-order2",
        "countryId": 1,
        "dataCenterInfo": {
            "@class": "com.netflix.appinfo.InstanceInfo$DefaultDataCenterInfo",
            "name": "MyOwn"
        },
        "hostName": "127.0.0.1",
        "status": "UP",
        "leaseInfo": null,
        "isCoordinatingDiscoveryServer": false,
        "lastUpdatedTimestamp": 1529391461000,
        "lastDirtyTimestamp": 1529391461000,
        "actionType": null,
        "asgName": null,
        "overridden_status": "UNKNOWN",
        "port": {
            "$": 11102,
            "@enabled": "false"
        },
        "securePort": {
            "$": 7002,
            "@enabled": "false"
        },
        "metadata": {
            "@class": "java.util.Collections$EmptyMap"
        }
    }
}