极光推送怎获取手机端的alias，registration_id，tag

[执_______念]

现在想要在自己的服务器中给指定手机用户推送消息，但是怎么才能在我的服务器中获取到这些东西进行推送，第一次用这个，不太懂！
public static PushPayload buildPushObjectAlias_Android_Ios(String alias,String title,Map<String,String> parmas,String...alert){
Builder builder = PushPayload.newBuilder();
return builder.setPlatform(Platform.android_ios())
.setAudience(Audience.alias(alias))
.setNotification(Notification.newBuilder()
.setAlert(alert)
.addPlatformNotification(AndroidNotification.newBuilder()
.setTitle(title)
.addExtras(parmas)
.build())
.addPlatformNotification(IosNotification.newBuilder()
.addExtras(parmas)
.build())
.build())
.setOptions(Options.newBuilder()
.setApnsProduction(false)
.build())
.build();
}