Ich möchte eine App entwickeln, die unter anderem auf die Google Kalender-API zugreift.

Die Benutzer der App sollten dann auch auf die Ereignisse zugreifen können. Leider kann ich mit meinem Code nicht zugreifen. Ich habe auch die Anweisungen von Google Kalender API Java Quickstart befolgt .

Das ist mein Code:

public class GoogleCalendar {

    private static final String APPLICATION_NAME = "Google Calendar Quickstart";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final String TOKENS_DIRECTORY_PATH = "tokens";

    /**
     * Global instance of the scopes required by this quickstart.
     * If modifying these scopes, delete your previously saved saved tokens/ folder.
     */
    private static final List<String> SCOPES = Collections.singletonList(CalendarScopes.CALENDAR_READONLY);
    private static final String CREDENTIALS_FILE_PATH = "/credential.json";

    /**
     * Creates an authorized Credential objects.
     * @param HTTP_TRANSPORT The network HTTP Transport
     * @return An authorized Credential object.
     * @throws IOException If the client_id.jason file cannot be found.
     */
    private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
        // Load client secrets.
        InputStream in = GoogleCalendar.class.getResourceAsStream(CREDENTIALS_FILE_PATH);
        if (in == null) {
            throw new FileNotFoundException("Resource not found: " + CREDENTIALS_FILE_PATH);
        }
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));

        // Build flow and trigger user authorization request.
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
                HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES)
                .setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH)))
                .setAccessType("offline")
                .build();
        LocalServerReceiver receiver = new LocalServerReceiver.Builder().setPort(8888).build();
        return new AuthorizationCodeInstalledApp(flow, receiver).authorize("user");
    }

    public static void getAllData() throws GeneralSecurityException, IOException {
        // Build a new authorized API client service.
        final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
        Calendar service = new Calendar.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT))
                .setApplicationName(APPLICATION_NAME)
                .build();
        // List the next 10 event from the primary calendar.
        DateTime now = new DateTime(System.currentTimeMillis());
        Events events = service.events().list("primary")
                .setMaxResults(10)
                .setTimeMin(now)
                .setOrderBy("startTime")
                .setSingleEvents(true)
                .execute();
        List<Event> items = events.getItems();
        if (items.isEmpty()) {
            System.out.println("No upcoming events found.");
        } else {
            System.out.println("Upcoming events");
            for (Event event : items) {
                DateTime start = event.getStart().getDateTime();
                if (start == null) {
                    start = event.getStart().getDate();
                }
                System.out.printf("%s (%s)\n", events.getSummary(), start);
            }
        }
    }
}

Und das ist meine Fehlermeldung: java.security.KeyStoreException: JKS not found

Ich habe die Methode get all data in einer anderen Klasse aufgerufen mit:

try {
    GoogleCalendar.getAllData();
} catch (GeneralSecurityException | IOException e) {
    e.printStackTrace();
}

Wenn Sie Fragen zu Informationen haben, lassen Sie es mich bitte wissen und ich werde die Informationen weitergeben.

Danke im Voraus.

Android Google Kalender API Anmeldeinformationen erhalten [Duplikat]

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