如何获取访问令牌以获取Google Analytics（分析）数据？

假设您要访问的是您自己的数据，并且可以访问Google Analytics（分析）帐户网站。我建议您使用服务帐户。Hello Analytics API Java

您可以在Google Developer Console上向Google注册应用程序，它与您的Google Analytics（分析）帐户没有任何关系。

再次建议您使用服务帐户，并在Google Developer控制台上创建服务帐户凭据。将服务帐户的电子邮件地址添加为帐户级别的Google Analytics（分析）部分中的用户，以使其具有读取权限，该访问权限必须在帐户级别。这将允许服务帐户读取您的Google Analytics（分析）数据。

import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.gson.GsonFactory;

import com.google.api.services.analytics.Analytics;
import com.google.api.services.analytics.AnalyticsScopes;
import com.google.api.services.analytics.model.Accounts;
import com.google.api.services.analytics.model.GaData;
import com.google.api.services.analytics.model.Profiles;
import com.google.api.services.analytics.model.Webproperties;

import java.io.File;
import java.io.IOException;


/**
 * A simple example of how to access the Google Analytics API using a service
 * account.
 */
public class HelloAnalytics {


  private static final String APPLICATION_NAME = "Hello Analytics";
  private static final JsonFactory JSON_FACTORY = GsonFactory.getDefaultInstance();
  private static final String KEY_FILE_LOCATION = "/path/to/your.p12";
  private static final String SERVICE_ACCOUNT_EMAIL = "<SERVICE_ACCOUNT_EMAIL>@developer.gserviceaccount.com";
  public static void main(String[] args) {
    try {
      Analytics analytics = initializeAnalytics();

      String profile = getFirstProfileId(analytics);
      System.out.println("First Profile Id: "+ profile);
      printResults(getResults(analytics, profile));
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  private static Analytics initializeAnalytics() throws Exception {
    // Initializes an authorized analytics service object.

    // Construct a GoogleCredential object with the service account email
    // and p12 file downloaded from the developer console.
    HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
    GoogleCredential credential = new GoogleCredential.Builder()
        .setTransport(httpTransport)
        .setJsonFactory(JSON_FACTORY)
        .setServiceAccountId(SERVICE_ACCOUNT_EMAIL)
        .setServiceAccountPrivateKeyFromP12File(new File(KEY_FILE_LOCATION))
        .setServiceAccountScopes(AnalyticsScopes.all())
        .build();

    // Construct the Analytics service object.
    return new Analytics.Builder(httpTransport, JSON_FACTORY, credential)
        .setApplicationName(APPLICATION_NAME).build();
  }


  private static String getFirstProfileId(Analytics analytics) throws IOException {
    // Get the first view (profile) ID for the authorized user.
    String profileId = null;

    // Query for the list of all accounts associated with the service account.
    Accounts accounts = analytics.management().accounts().list().execute();

    if (accounts.getItems().isEmpty()) {
      System.err.println("No accounts found");
    } else {
      String firstAccountId = accounts.getItems().get(0).getId();

      // Query for the list of properties associated with the first account.
      Webproperties properties = analytics.management().webproperties()
          .list(firstAccountId).execute();

      if (properties.getItems().isEmpty()) {
        System.err.println("No Webproperties found");
      } else {
        String firstWebpropertyId = properties.getItems().get(0).getId();

        // Query for the list views (profiles) associated with the property.
        Profiles profiles = analytics.management().profiles()
            .list(firstAccountId, firstWebpropertyId).execute();

        if (profiles.getItems().isEmpty()) {
          System.err.println("No views (profiles) found");
        } else {
          // Return the first (view) profile associated with the property.
          profileId = profiles.getItems().get(0).getId();
        }
      }
    }
    return profileId;
  }

  private static GaData getResults(Analytics analytics, String profileId) throws IOException {
    // Query the Core Reporting API for the number of sessions
    // in the past seven days.
    return analytics.data().ga()
        .get("ga:" + profileId, "7daysAgo", "today", "ga:sessions")
        .execute();
  }

  private static void printResults(GaData results) {
    // Parse the response from the Core Reporting API for
    // the profile name and number of sessions.
    if (results != null && !results.getRows().isEmpty()) {
      System.out.println("View (Profile) Name: "
        + results.getProfileInfo().getProfileName());
      System.out.println("Total Sessions: " + results.getRows().get(0).get(0));
    } else {
      System.out.println("No results found");
    }
  }
}

直接从Hello Analytics API中剥离代码：服务帐户的Java快速入门