在 oauth2 SignedJwtAssertionCredentials 中获得“invalid_grant”

我正在尝试在服务器到服务器 JSON API 场景中创建 oauth2 access_token。但它因 invalid_grant 错误而失败，请帮助。

from oauth2client.client import SignedJwtAssertionCredentials

KEY_FILE = 'xxxxxxxxxxxx-privatekey.p12'

with open(KEY_FILE, 'r') as fd:
    key = fd.read()

SERVICE_ACCOUNT_EMAIL = 'xxxxxx.apps.googleusercontent.com'

credentials = SignedJwtAssertionCredentials(SERVICE_ACCOUNT_EMAIL, key,
      scope="https://www.googleapis.com/auth/datastore https://www.googleapis.com/auth/userinfo.email",
      token_uri='https://accounts.google.com/o/oauth2/token')


assertion = credentials._generate_assertion()

h = httplib2.Http()
credentials._do_refresh_request(h.request)

我得到了

Traceback (most recent call last):
  File "/Users/pahud/Projects/oauth2client/x.py", line 24, in <module>
    credentials._do_refresh_request(h.request)
  File "/Users/pahud/Projects/oauth2client/oauth2client/client.py", line 710, in _do_refresh_request
    raise AccessTokenRefreshError(error_msg)
oauth2client.client.AccessTokenRefreshError: invalid_grant
[Finished in 0.7s with exit code 1]

https://i.stack.imgur.com/iGGYx.png https://i.stack.imgur.com/iGGYx.png

我修好了它。

SERVICE_ACCOUNT_EMAIL = 'xxxxxx.apps.googleusercontent.com'

上面是客户端 ID，而不是电子邮件，我修复了这个问题，现在可以使用了。