Java Requires Chilkat v10.1.2+

Schwab OAuth2 in a Desktop App

See more Schwab Examples

Demonstrates how to get a Charles Schwab OAuth2 access token from a desktop application or script. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.OAuth2;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // To further clarify, see OAuth 2.0 Authorization Flow

        // This is the way to initially obtain the OAuth2 access token.  Afterwards it can be
        // repeatedly refreshed without user interaction, as shown in this example: Refresh Schwab OAuth2 Access Token.

        OAuth2 oauth2 = new OAuth2();

        // Your applicaton must use your own public web server as an intermediate
        // to receive and forward the redirect to localhost.
        // See Using Your Web Server as an Intermediary for OAuth2 Redirect to localhost

        oauth2.setAppCallbackUrl("https://yourwebserver.com/OAuth2.php");
        oauth2.setListenPort(3017);

        oauth2.setAuthorizationEndpoint("https://api.schwabapi.com/v1/oauth/authorize");
        oauth2.setTokenEndpoint("https://api.schwabapi.com/v1/oauth/token");

        // Replace these with actual values.
        oauth2.setClientId("APP_KEY");
        oauth2.setClientSecret("APP_SECRET");
        oauth2.setUseBasicAuth(true);
        oauth2.setCodeChallenge(false);

        oauth2.setScope("");

        // Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
        String url;
        try {
            url = oauth2.startAuth();
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("url = " + url);

        // Launch the default browser on the system and navigate to the url.
        // The LaunchBrowser method was added in Chilkat v10.1.2.
        try {
            oauth2.launchBrowser(url);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Wait for the user to approve or deny authorization in the browser.
        int numMsWaited = 0;
        while ((numMsWaited < 90000) && (oauth2.getAuthFlowState() < 3)) {
            oauth2.sleepMs(100);
            numMsWaited = numMsWaited + 100;
        }

        // If the browser does not respond within the specified time, AuthFlowState will be:
        //
        // 1: Waiting for Redirect – The OAuth2 background thread is waiting for the browser's redirect request.
        // 2: Waiting for Final Response – The thread is awaiting the final access token response.
        // In either case, cancel the background task initiated by StartAuth.

        if (oauth2.getAuthFlowState() < 3) {
            oauth2.cancel();
            System.out.println("No response from the browser!");
            return;
        }

        // Check AuthFlowState to determine if authorization was granted, denied, or failed:
        //
        // 3: Success – OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
        // 4: Access Denied – OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
        // 5: Failure – OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

        if (oauth2.getAuthFlowState() == 5) {
            System.out.println("OAuth2 failed to complete.");
            System.out.println(oauth2.getFailureInfo());
            return;
        }

        if (oauth2.getAuthFlowState() == 4) {
            System.out.println("OAuth2 authorization was denied.");
            System.out.println(oauth2.getAccessTokenResponse());
            return;
        }

        if (oauth2.getAuthFlowState() != 3) {
            System.out.println("Unexpected AuthFlowState:" + oauth2.getAuthFlowState());
            return;
        }

        // Save the full JSON access token response to a file.
        StringBuilder sbJson = new StringBuilder();
        sbJson.append(oauth2.getAccessTokenResponse());
        sbJson.writeFile("qa_data/tokens/schwab-access-token.json", "utf-8", false);

        // The full JSON received looks like this:
        // {
        //   "expires_in": 3600,
        //   "x_refresh_token_expires_in": 8726400,
        //   "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
        //   "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
        //   "token_type": "bearer"
        // }

        System.out.println("OAuth2 authorization granted!");
        System.out.println("Access Token = " + oauth2.getAccessToken());
    }
}