Google App Engine is one of the supported Java environments for the Google API Client Library for Java.
If you are building a web app that interacts with a user's data via an OAuth 2.0-enabled API, we've created some helpers to assist you with the process. The helpers aim to:
- Simplify the process of obtaining access tokens (AuthorizationCodeFlow).
- Manage tokens, after they are obtained, by marking them as PersistenceCapable.
- Simplify the process of making authenticated calls using the access token's credential.
- Insulate you from the details of authentication when writing servlets.
- Install the Google API Client Library for Java:
- Learn about using OAuth 2.0 with the authorization code flow for Google App Engine applications.
- Learn about using OAuth 2.0 with the Google App Engine Identity API.
- Take a look at the Calendar App Engine sample. This sample combines our Java library and auth helpers to show you how to access end-user data from within a Google App Engine web app. The sample also uses GWT for the user interface.