Java

Get Access Token for Google Tasks using Service Account JSON Key

See more Google Tasks Examples

Demonstrates how to get an access token for the Google Tasks API using a Service Account JSON key. Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthGoogle;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.FileAccess;
import com.chilkatsoft.chilkat2.Socket;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // First load the JSON key into a string.
        FileAccess fac = new FileAccess();
        String jsonKey;
        try {
            jsonKey = fac.readEntireTextFile("qa_data/googleSvcAccountKeys/ChilkatCloud-48f7737c7505.json", "utf-8");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // A JSON private key should look like this:

        // {
        //   "type": "service_account",
        //   "project_id": "chilkatcloud",
        //   "private_key_id": "48f7737c7505bb88eee6a20d09993e10605d466e",
        //   "private_key": "-----BEGIN PRIVATE KEY----- ... -----END PRIVATE KEY-----\n",
        //   "client_email": "pip-564@chilkatcloud.iam.gserviceaccount.com",
        //   "client_id": "109982228323456925225",
        //   "auth_uri": "https://accounts.google.com/o/oauth2/auth",
        //   "token_uri": "https://oauth2.googleapis.com/token",
        //   "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
        //   "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/pip-564%40chilkatcloud.iam.gserviceaccount.com"
        // }

        AuthGoogle gAuth = new AuthGoogle();
        gAuth.setJsonKey(jsonKey);

        // Choose the scope for read/write access.
        gAuth.setScope("https://www.googleapis.com/auth/tasks");

        // Request an access token that is valid for this many seconds.
        gAuth.setExpireNumSeconds(3600);

        gAuth.setSubEmailAddress("");

        // Connect to www.googleapis.com using TLS
        Socket tlsSock = new Socket();
        try {
            tlsSock.connect("www.googleapis.com", 443, true, 5000);

            // Send the request to obtain the access token.
            gAuth.obtainAccessToken(tlsSock);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Examine the access token:
        System.out.println("Access Token: " + gAuth.getAccessToken());

        // Save our access token to a file.
        fac.writeEntireTextFile("qa_data/tokens/googleTasks.txt", gAuth.getAccessToken(), "utf-8", false);
    }
}