服务帐号授权方法与 BigQuery 配合得很好.您不需要调用 credential.refreshToken().确保您的私钥文件可以从您的应用程序中读取.下面是一个例子:

The service account authorization method works just fine with BigQuery. You don't need to call credential.refreshToken(). Make sure that your private key file can be read from your application. Here is an example:

import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson.JacksonFactory;

import com.google.api.services.bigquery.Bigquery;
import com.google.api.services.bigquery.BigqueryScopes;
import com.google.api.services.bigquery.Bigquery.Projects;
import com.google.api.services.bigquery.model.*;

import java.io.File;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.List;

public class BigQueryJavaServiceAccount {

  public static void main(String[] args) throws IOException, InterruptedException, GeneralSecurityException {

    final HttpTransport TRANSPORT = new NetHttpTransport();
    final JsonFactory JSON_FACTORY = new JacksonFactory();

    GoogleCredential credential = new  GoogleCredential.Builder()
      .setTransport(TRANSPORT)
      .setJsonFactory(JSON_FACTORY)
      .setServiceAccountId("SOMETHING@developer.gserviceaccount.com")
      .setServiceAccountScopes(BigqueryScopes.BIGQUERY)
      .setServiceAccountPrivateKeyFromP12File(new File("key.p12"))
      .build();

    Bigquery bigquery = Bigquery.builder(TRANSPORT, JSON_FACTORY)
      .setHttpRequestInitializer(credential)
      .build();

    Projects.List projectListRequest = bigquery.projects().list();
    ProjectList projectList = projectListRequest.execute();
    List<ProjectList.Projects> projects = projectList.getProjects();
    System.out.println("Available projects
----------------
");
    for (ProjectList.Projects project : projects) {
      System.out.format("%s
", project.getProjectReference().getProjectId());
    }
  }
}