两个地址：
1、https://play.google.com/apps/publish/ （关联）
2、https://console.developers.google.com/apis/credentials 获取client_id / 配置域名 redirect_uri
步骤
一、
https://accounts.google.com/o/oauth2/auth?scope=https://www.googleapis.com/auth/androidpublisher&response_type=code&access_type=offline&redirect_uri={redirect_uri}&client_id={client_id}
>> 浏览器跳转
二、
步骤一会重定向到
https://你配置域名/?code=4/qwHH1AKDWz-cYn6eIzthPVXyfnrEFhyA_lRWJNxYkM&scope=https://www.googleapis.com/auth/androidpublisher
>> 记录code
三、
POST
https://accounts.google.com/o/oauth2/token
参数：
'grant_type'=>'authorization_code',
'code'=>'第二步获取的code',
'client_id'=>'....',
'client_secret'=>'....',
'redirect_uri'=>'redirect_uri',
结果：
>>>>
{
"access_token": "...",
"expires_in": 3600,
"refresh_token": "...",//保存
"scope": "https://www.googleapis.com/auth/androidpublisher",
"token_type": "Bearer"
}
