Google service account and sheets permissions
问题 I've got a Java backend (spring + google-oauth-client) that should be able to access Google.sheets and parse some data from there. First I implemented regular "3-legged" OAuth 2.0 authentication on my local backend deploy, it worked fine, but as backend will be deployed in cloud without any browser etc it's not the best option. So I decided to use service accounts OAuth flow: created google service account and refactored my code to use it instead of AuthCodeFlow, but I saw 403 Forbidden "The