通过Python通过刷新令牌完成Oauth2.0授权(创建Google API服务) [英] Accomplishing Oauth2.0 authorization with refresh token through Python (Google API service creation)

问题描述

我正在尝试使用Oauth2通过无头Linux服务器访问Google API服务.我阅读了这篇文章的所有答案: https://stackoverflow.com/a/19766913/15713034 )，其内容如下:

I'm trying to access Google API services through a headless Linux server using Oauth2. I read through all the answers on this post: How do I authorise an app (web or installed) without user intervention? but none of them showed how to use the refresh token to generate an access token in python. pinnoyyid had a javascript example (https://stackoverflow.com/a/19766913/15713034) that went something like this:

function get_access_token_using_saved_refresh_token() {
// from the oauth playgroundfunction get_access_token_using_saved_refresh_token() {
// from the oauth playground
const refresh_token = "1/0PvMAoF9GaJFqbNsLZQg-f9NXEljQclmRP4Gwfdo_0";
// from the API console
const client_id = "559798723558-amtjh114mvtpiqis80lkl3kdo4gfm5k.apps.googleusercontent.com";
// from the API console
const client_secret = "WnGC6KJ91H40mg6H9r1eF9L";
// from https://developers.google.com/identity/protocols/OAuth2WebServer#offline
const refresh_url = "https://www.googleapis.com/oauth2/v4/token";
let refresh_request = {
    body:`grant_type=refresh_token&client_id=${encodeURIComponent(client_id)}&client_secret=${encodeURIComponent(client_secret)}& refresh_token=${encodeURIComponent(refresh_token)}`;,
    method: "POST",
    headers: new Headers({
        'Content-Type': 'application/x-www-form-urlencoded'
    })
}

JavaScript并不是我真正的最佳语言，但是我可以判断他们是在向google服务器发送POST请求.因此，我尝试使用 requests 包在Python中重新创建请求:

JavaScript isn't really my best language, but I could decipher they were sending a POST request to the google server. So I tried to recreate the request in Python with the requests package:

   import requests
   result = requests.post("https://www.googleapis.com/oauth2/v4/token", body={'grant_type':'refresh-token', 'client_id':client_id, 'client_secret':client_secret, 'refresh_token': refresh_token}, headers={'Content-Type': 'application/x-www-form-urlencoded'})
   

当我查看结果时，它表明它具有200状态代码(成功)，但是当我尝试检查响应时，没有什么容易理解的，并且我无法在JSON中解析结果以获取访问令牌.我尝试的另一种方法是使用Google建议的代码启动Flask服务器: https://developers.google.com/identity/protocols/oauth2/web-server#python_5 ，但这也不起作用，因为当我尝试从其中一个功能(包含访问代码)，无论如何都不会返回JSON.我更喜欢post request方法，因为它更干净而且使用的代码更少.谢谢！

And when I look at result it shows it has a 200 status code (success) but when I try to examine the response, there's nothing easy to read and I can't parse the result in JSON to get the access token. The other approach I tried was to spin up a Flask server using Google's suggested code: https://developers.google.com/identity/protocols/oauth2/web-server#python_5 but that doesn't work either because when I try to return the credentials from one of the functions (object that contains the access code) that won't return JSON no matter what. I'd prefer the post request method since it is cleaner and uses less code. Thanks!

推荐答案

在Python中，一种方法是使用

In Python, one approach is to use requests-oauthlib to perform the Backend Application Flow. This is useful when you don't have a front-end to redirect someone to, in order to approve fetching a token.

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