Java

Rabobank Refresh OAuth2 Access Token

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Demonstrates how to refresh an expired Rabobank OAuth2 access token. (No interactive user interaction is required to refresh an access token.) Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.FileAccess;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpRequest;
import com.chilkatsoft.chilkat2.HttpResponse;
import com.chilkatsoft.chilkat2.JsonObject;

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.

        // We previously obtained an access token and saved the JSON to a file using this example:
        // Get Rabobank OAuth2 Access Token

        JsonObject json = new JsonObject();
        try {
            json.loadFile("qa_data/tokens/rabobank.json");
        } catch (ChilkatException e) {
            return;
        }

        // {
        //   "token_type": "Bearer",
        //   "access_token": "AAIkYTU0ZWM ... sxE0KL0HHWw",
        //   "expires_in": 3600,
        //   "consented_on": 1584641121,
        //   "scope": "ais.balances.read ais.transactions.read-90days ais.transactions.read-history",
        //   "refresh_token": "AAJXXSdN ... Uiblz9ILkxNBlytRGA",
        //   "refresh_token_expires_in": 157784760,
        //   "expires_on": "1584644722"
        // }

        // Refresh the access token by sending a POST like this:
        //

        // POST /oauth2/token
        // Headers:
        //     Content-Type: application/x-www-form-urlencoded
        //     Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)
        //
        // Body (x-www-form-urlencoded):
        //     grant_type: refresh_token
        //     refresh_token: REFRESH_TOKEN

        HttpRequest req = new HttpRequest();
        req.addParam("grant_type", "refresh_token");
        req.addParam("refresh_token", json.stringOf("refresh_token"));

        Http http = new Http();

        // Causes the "Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)" header to be added..
        http.setBasicAuth(true);
        http.setLogin("YOUR_APP_CLIENT_ID");
        http.setPassword("YOUR_APP_CLIENT_SECRET");

        req.setHttpVerb("POST");
        req.setContentType("application/x-www-form-urlencoded");

        HttpResponse resp = new HttpResponse();
        try {
            http.httpReq("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token", req, resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Load the JSON response.
        json.load(resp.getBodyStr());
        json.setEmitCompact(false);

        // Show the JSON response.
        System.out.println(json.emit());

        System.out.println("Response status code: " + resp.getStatusCode());

        // If the response status code is not 200, then it's an error.
        if (resp.getStatusCode() != 200) {
            return;
        }

        // Save the refreshed access token JSON to a file for future requests.
        FileAccess fac = new FileAccess();
        fac.writeEntireTextFile("qa_data/tokens/rabobank.json", json.emit(), "utf-8", false);
    }
}