如何在java中使用Google Analytics Data API (GA4)扩展Get值以获取screenPageViews计数？

import com.google.api.services.analyticsdata.v1beta.AnalyticsData;
import com.google.api.services.analyticsdata.v1beta.AnalyticsDataScopes;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials;
import com.google.auth.oauth2.UserCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials.Builder;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ImpersonatedCredentials;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.AccessToken;
import com.google.auth.oauth2.AccessTokenInterceptor;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.GoogleCredentialsTest;
import com.google.auth.oauth2.ServiceAccountCredentials;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.GoogleCredentialsTest;

import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.Collections;

public class GoogleAnalyticsDataAPIExample {

    private static final String KEY_FILE_LOCATION = "path_to_your_key_file.json";
    private static final String CLIENT_ID = "your_client_id";
    private static final String CLIENT_SECRET = "your_client_secret";
    private static final String ACCESS_TOKEN = "your_access_token";

    public static void main(String[] args) {
        try {
            // 身份验证
            GoogleCredentials credentials = null;

            // 使用API密钥进行身份验证
            //credentials = GoogleCredentials.fromStream(new FileInputStream(KEY_FILE_LOCATION))
            //        .createScoped(Collections.singletonList(AnalyticsDataScopes.ANALYTICS_READONLY));

            // 使用OAuth 2.0凭据进行身份验证
            //credentials = UserCredentials.newBuilder()
            //        .setClientId(CLIENT_ID)
            //        .setClientSecret(CLIENT_SECRET)
            //        .setAccessToken(ACCESS_TOKEN)
            //        .build();

            // 或者使用服务帐号凭据进行身份验证
            credentials = ServiceAccountCredentials.fromStream(new FileInputStream(KEY_FILE_LOCATION))
                    .createScoped(Collections.singletonList(AnalyticsDataScopes.ANALYTICS_READONLY));

            // 建立与API的连接
            AnalyticsData analyticsData = new AnalyticsData.Builder(
                    GoogleNetHttpTransport.newTrustedTransport(),
                    JacksonFactory.getDefaultInstance(),
                    new HttpCredentialsAdapter(credentials))
                    .setApplicationName("Your_Application_Name")
                    .build();

            // 构建请求
            RunReportRequest request = new RunReportRequest()
                    .setEntity(new Entity()
                            .setPropertyId("your_property_id"))
                    .setDimensions(Arrays.asList(new Dimension().setName("screenPageViews")))
                    .setMetrics(Arrays.asList(new Metric().setName("screenPageViews")));

            // 发送请求并获取响应
            RunReportResponse response = analyticsData
                    .properties().runReport("your_property_id", request)
                    .execute();

            // 解析响应并提取屏幕页面视图计数
            if (response.getRows() != null) {
                for (Row row : response.getRows()) {
                    List<DateRangeValues> metrics = row.getMetrics();
                    for (DateRangeValues values : metrics) {
                        System.out.println("screenPageViews: " + values.getValues().get(0));
                    }
                }
            }

        } catch (IOException e) {
            e.printStackTrace();
        } catch (GeneralSecurityException e) {
            e.printStackTrace();
        }
    }
}