我尝试使用Google Calendar API v3从其他Google帐户（而非我的计算机中的已登录用户）检索事件列表。 我获得的事件列表仅来自我的机器中的已登录用户，即使我尝试填写＆＃39;用户帐号邮箱。 我应该怎么做？
/*
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* and open the template in the editor.
*/
package us.com.manga;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.api.services.calendar.Calendar;
import com.google.api.services.calendar.model.Event;
import com.google.api.services.calendar.model.Events;
import java.util.List;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.client.util.DateTime;
import com.google.api.services.calendar.CalendarScopes;
import com.google.api.services.calendar.model.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.List;
/**
*
* @author robert bones
*/
public class NewServlet extends HttpServlet {
private static final String APPLICATION_NAME
= "Google Calendar API Java Quickstart";
/**
* Directory to store user credentials for this application.
*/
private static final java.io.File DATA_STORE_DIR = new java.io.File(
System.getProperty("user.home"), ".credentials/calendar-java-quickstart");
/**
* Global instance of the {@link FileDataStoreFactory}.
*/
private static FileDataStoreFactory DATA_STORE_FACTORY;
/**
* Global instance of the JSON factory.
*/
private static final JsonFactory JSON_FACTORY
= JacksonFactory.getDefaultInstance();
/**
* Global instance of the HTTP transport.
*/
private static HttpTransport HTTP_TRANSPORT;
/**
* Global instance of the scopes required by this quickstart.
*/
private static final List<String> SCOPES
= Arrays.asList(CalendarScopes.CALENDAR_READONLY);
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
public Credential authorize() throws IOException {
// Load client secrets.
//InputStream in
// = NewServlet.class.getResourceAsStream("/client_secret.json");
InputStream in = this.getServletConfig().getServletContext().
getResourceAsStream("/WEB-INF/client_secret.json");
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(DATA_STORE_FACTORY)
.setAccessType("offline")
.setClientId("xxxx@gmail.com")
.build();
Credential credential = new AuthorizationCodeInstalledApp(
flow, new LocalServerReceiver()).authorize("xxxxx@gmail.com");
System.out.println(
"Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
return credential;
}
/**
* Build and return an authorized Calendar client service.
*
* @return an authorized Calendar client service
* @throws IOException
*/
public com.google.api.services.calendar.Calendar
getCalendarService() throws IOException {
Credential credential = authorize();
return new com.google.api.services.calendar.Calendar.Builder(
HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME)
.build();
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// Initialize Calendar service with valid OAuth credentials
//Calendar service = new Calendar.Builder(httpTransport, jsonFactory, credentials)
// .setApplicationName("applicationName").build();
// Iterate over the events in the specified calendar
String pageToken = null;
response.setContentType("text/html;charset=UTF-8");
try (PrintWriter out = response.getWriter()) {
/* TODO output your page here. You may use following sample code. */
out.println("<!DOCTYPE html>");
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet NewServlet</title>");
out.println("</head>");
out.println("<body>");
do {
Events events = getCalendarService().events().list("primary").setPageToken(pageToken).execute();
List<Event> items = events.getItems();
for (Event event : items) {
out.println("<h1>" + event.getSummary() + "</h1>");
}
pageToken = events.getNextPageToken();
} while (pageToken != null);
out.println("</body>");
out.println("</html>");
}
}
}
提前致谢。
答案 0 :(得分：0)
进行身份验证后，您的应用程序可以访问经过身份验证的用户可以访问的所有信息。
示例：
如果我对您的应用进行身份验证，您将可以阅读我的Google日历。以及任何公共日历，如美国的假期。 （后者是您不需要通过身份验证即可访问的公共数据）
我对您的应用程序进行身份验证不会让您或我访问作为其私人数据的Jon Snows Google日历帐户。
答案：
您只能访问经过身份验证的用户有权访问的数据。不是别人的数据。
你应该做什么
要求其他用户向您要验证的用户授予对其日历的访问权限。