How to get access token using gmail api

Question

I got the authorization code following this document. But when I tried to get access token, I always got errors. Can anyone help me ?

public String AccessTok         


        

Answer 1

Firstly, you must look this page :

https://developers.google.com/gmail/api/auth/web-server#create_a_client_id_and_client_secret

The value you see in the query parameter code is a string you have to post to google in order to get the access token.

After the web server receives the authorization code, it may exchange the authorization code for an access token and a refresh token. This request is an HTTPS POST to the URL https://www.googleapis.com/oauth2/v3/token POST /oauth2/v3/token HTTP/1.1 content-type: application/x-www-form-urlencoded

code=4/v4-CqVXkhiTkn9uapv6V0iqUmelHNnbLRr1EbErzkQw#&redirect_uri=&client_id=&scope=&client_secret=************&grant_type=authorization_code https://developers.google.com/identity/protocols/OAuth2WebServer