net.oauth2.clients.google

Class GoogleClient

java.lang.Object

net.oauth2.clients.google.GoogleClient

public class GoogleClient
extends Object

The sample shows how to obtain a valid token for using Google APIs.

Prerequisites.
You will need a valid OAuth 2.0 client registered in Google API console at https://console.developers.google.com.
More specifically, you will need 'client id', 'client secret', 'redirect uri' exactly as specified in the console section 'Credentials' (download as json if you are missing the redirect url).
Additionally, you will need also API scopes for the APIs enabled in the console that you intend to use with the token you will be requesting.

Using the sample.
To trigger a token request the sample needs a couple of parameters from your client and apis that you will use with the token (specified above).
You can supply them as environment variables and run the java program or you can supply them interactively in the command line. Mixing the two options is also possible, i.e. supply part of the parameters as environment variables and another part interactively.
The names of the environment variables that you can use to supply the parameters are:

• GOOGLE_API_CLIENT_ID: The client ID obtained from the API Console.
• GOOGLE_API_CLIENT_SECRET: The client Secret obtained from the API Console
• GOOGLE_API_REDIRECT_URI: One of the redirect URIs listed for your project in the API Console
• GOOGLE_API_SCOPES: A valid scope for the api that you will call
• GOOGLE_API_AUTHORIZATION_CODE: The authorization code for this client if you have already obtained it by some means

Note, that if you do not provide authorization code via environment variable, the sample will prompt you for any missing parameters required to form a valid request for the code and generate it for you. Use it to obtain and supply the code.

Reference
https://developers.google.com/identity/protocols/OAuth2WebServer

Constructor Summary

Constructors

Constructor and Description
GoogleClient()

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GoogleClient

public GoogleClient()

Method Detail

main

public static void main(String[] args)
                 throws OAuth2ProtocolException,
                        IOException

Throws:

OAuth2ProtocolException

IOException