如何使用java获取谷歌分析数据？

import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials;

// 加载私钥文件
GoogleCredentials credentials = ServiceAccountCredentials.fromStream(new FileInputStream("path/to/private_key.json"));

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.jackson2.JacksonFactory;
import com.google.api.services.analyticsreporting.v4.AnalyticsReporting;
import com.google.api.services.analyticsreporting.v4.AnalyticsReportingScopes;

// 创建HTTP传输和JSON工厂对象
HttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
JsonFactory jsonFactory = JacksonFactory.getDefaultInstance();

// 创建谷歌分析报告对象
AnalyticsReporting analyticsReporting = new AnalyticsReporting.Builder(httpTransport, jsonFactory, credentials)
    .setApplicationName("Your Application Name")
    .build();

import com.google.api.services.analyticsreporting.v4.model.*;

// 创建报告请求对象
ReportRequest request = new ReportRequest()
    .setViewId("your-view-id")
    .setDateRanges(Arrays.asList(new DateRange().setStartDate("2022-01-01").setEndDate("2022-01-31")))
    .setMetrics(Arrays.asList(new Metric().setExpression("ga:sessions")))
    .setDimensions(Arrays.asList(new Dimension().setName("ga:country")))
    .setFiltersExpression("ga:source==google");

// 创建报告请求对象列表
GetReportsRequest getReport = new GetReportsRequest().setReportRequests(Arrays.asList(request));

// 发送数据请求并获取响应
GetReportsResponse response = analyticsReporting.reports().batchGet(getReport).execute();

// 处理响应数据
List<Report> reports = response.getReports();
for (Report report : reports) {
    // 处理报告数据
}