java - 谷歌日历 API Java

Question

我想为我的一个应用程序实现日历/事件。所以我决定使用 Google Calendar API (Java)。但是我看不到它的实现的 Web 部分（前端）。任何人都可以帮助我获得 Google Calendar API（包括前端）的整个实现。提前致谢。

Answer 1

也许这就是您正在寻找的：

https://developers.google.com/accounts/docs/OAuth2WebServer和https://developers.google.com/google-apps/calendar/auth

这使您能够编写一个基于 Web 的应用程序，使用户能够登录到 google 并让您查看或修改用户日历

授权后（此处的漂亮序列图：https ://developers.google.com/accounts/docs/OAuth2#webserver ），您可以使用 Google Java API 添加删除或查看日历或日历项或直接从 Javascript https 使用 REST： //developers.google.com/google-apps/calendar/firstapp#rest

或者，您可以将旧版日历小部件用于此处的公共日历： https ://developers.google.com/gdata/samples/cal_sample

Answer 2

**，首先，您必须在console.developer.google.com 上创建一个项目并启用日历API，然后您必须设置OauthScope 并创建Credentials，然后下载credentials.json 文件并粘贴到您的项目中，然后运行它程序将生成您的事件**

public class Test {
    private static final String APPLICATION_NAME = "GoogleCalenderApi";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
    private static final String TOKENS_DIRECTORY_PATH = "tokens";
    private static final List<String> SCOPES = Collections.singletonList(CalendarScopes.CALENDAR);
    private static final String CREDENTIALS_FILE_PATH = "/credentials.json";

    private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException {
        InputStream in = Test.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));
        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 main(String... args) throws IOException, GeneralSecurityException {
        final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
        Calendar service = new Calendar.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT)).setApplicationName(APPLICATION_NAME).build();
        Event event = new Event();
        event.setSummary("Title of the Event");
        event.setLocation("Location");
        event.setDescription("Something about the event");
        event.setId("event id");
        ArrayList<EventAttendee> attendees = new ArrayList<EventAttendee>();
        attendees.add(new EventAttendee().setEmail("example@gmail.com"));
        attendees.add(new EventAttendee().setEmail("1234@gmail.com"));
        event.setAttendees(attendees);
        String startDate = "2019-10-16 09:00:00";
        Timestamp sDate = Timestamp.valueOf(startDate);
        String endDate = "2019-10-18 18:15:00";
        Timestamp eDate = Timestamp.valueOf(endDate);
        DateTime start = new DateTime(sDate, TimeZone.getTimeZone("UTC"));
        event.setStart(new EventDateTime().setDateTime(start));
        DateTime end = new DateTime(eDate, TimeZone.getTimeZone("UTC"));
        event.setEnd(new EventDateTime().setDateTime(end));
        EventReminder[] reminderOverrides = new EventReminder[] {
                new EventReminder().setMethod("email").setMinutes(24 *60),
                new EventReminder().setMethod("popup").setMinutes(10),
        };
        Event.Reminders reminders = new Event.Reminders()
                .setUseDefault(false)
                .setOverrides(Arrays.asList(reminderOverrides));
        event.setReminders(reminders);
        Event createdEvent = service.events().insert("primary", event).execute();
        System.out.println(createdEvent);
        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 event1 : items) {
                DateTime start1 = event1.getStart().getDateTime();
                if (start1 == null) {
                    start1 = event1.getStart().getDate();
                }
                System.out.println(event1);
                //System.out.printf("%s (%s)\n", event1.getId(), start1);
            }
        }
    }