CODEWITHSUNDEEP
javagoogle-app-enginegoogle-apigoogle-api-java-clientuserinfo
augustocosta
augustocosta

Reputation: 139

How to get user profile on Google API using the JAVA library?

I have a Java ClientRequest to the Google API that returns a JSON containing the profile based on an access_token. The URL is:
https://www.googleapis.com/oauth2/v1/userinfo?access_token=ya29.1.AADtN_VALuuUTBm8ENfNTz8s...

And the response is:

{
    "id": "111223344556677889900",
    "email": "[email protected]",
    "verified_email": true,
    "name": "My Name",
    "given_name": "My",
    "family_name": "Name",
    "link": "plus.google.com/111223344556677889900",
    "picture": "photo.jpg",
    "gender": "male",
    "locale": "en"
}

Some points:

1 I want to use the Java library to avoid mounting the HTTP request, keep the google server URL, and other minor things.
2 I don't need the authorization steps because, at this point, my method receives the access token (all the Oauth steps are done before).
3 In this method, we don't have (and so far don't need) the client id and secret.
4 I don't need the Google+ scope. Actually, I prefer not to go there. So far only found examples using the Plus library.

In summary, I need something in the google API Java library precisely equivalent to the HTTP request I use nowadays.

Thank you very much in advance!

Upvotes: 5

Views: 11842

Answers (2)

Sure
Sure

Reputation: 113

Complementing with more info, since I don't have enough reputation to comment on the above answer:

After adding

<dependency>
    <groupId>com.google.apis</groupId>
    <artifactId>google-api-services-oauth2</artifactId>     
    <version>v2-rev65-1.17.0-rc</version>
</dependency>

to your pom.xml file, the following line

Oauth2 oauth2 = new Oauth2.Builder(new NetHttpTransport(), new JacksonFactory(), credential).setApplicationName("Oauth2").build();

could raise "JacksonFactory cannot be resolved to a type", and if this happens, you can replace it with new GsonFactory() (from com.google.api.client.json.gson), and it'll work.

Now, about how to get an accessToken: it comes inside com.google.auth.oauth2.UserCredentials (com.google.auth.oauth2.UserCredentials), which you can get by calling com.google.auth.oauth2.UserAuthorizer.getCredentialsFromCode.

You can build a UserAuthorizer by calling

UserAuthorizer
    .newBuilder()
    .setClientId(ClientId.of(<client id>, <client secret>))
    .setScopes(<scopes>)
    .build()

You can get the <client id> and the <client secret> by reading the OAuth Client ID file created on your google cloud project dashboard under credentials.

And lastly, an example of how to read the file using com.google.auth.oauth2.ClientId:

ClientId parsedClient = ClientId.fromStream(new FileInputStream("key.json"))

I'm a bit late here, but I hope this helps someone.

Upvotes: 2

aswin
aswin

Reputation: 413

I hope this helps

GoogleCredential credential = new GoogleCredential().setAccessToken(accessToken);   
 Oauth2 oauth2 = new Oauth2.Builder(new NetHttpTransport(), new JacksonFactory(), credential).setApplicationName(
          "Oauth2").build();
 Userinfoplus userinfo = oauth2.userinfo().get().execute();
 userinfo.toPrettyString();

Upvotes: 29

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