使用Java API的服务帐户验证Google API

Question

我正在尝试使用oauth API通过Java API对Google服务帐户进行身份验证.我希望用它来访问Google Bigquery.我从API请求中返回"无效授权".

以下是代码,它是基本身份验证示例的副本(不适用于Bigquery ..而是另一个Google API):

  /** Global instance of the HTTP transport. */
  private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();

  /** Global instance of the JSON factory. */
  private static final JsonFactory JSON_FACTORY = new JacksonFactory();

  private static Bigquery bigquery;  

public ServiceAccountExample() {

      try {
          try {

            GoogleCredential credential = new  GoogleCredential.Builder().setTransport(HTTP_TRANSPORT)
                .setJsonFactory(JSON_FACTORY)
                .setServiceAccountId(SERVICE_ACCOUNT_EMAIL)
                .setServiceAccountScopes(BigqueryScopes.BIGQUERY)
                .setServiceAccountPrivateKeyFromP12File(new File("GoogleBigQuery-privatekey.p12"))
                //.setRefreshListeners(refreshListeners)
                //.setServiceAccountUser("email.com")
                .build();


            credential.refreshToken();

            bigquery = new Bigquery.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
                        //.setApplicationName("GoogleBigQuery/1.0")
                        .build();

            listDatasets(bigquery, "publicdata");

            return;
          } catch (IOException e) {
            System.err.println(e.getMessage());
          }
        } catch (Throwable t) {
          t.printStackTrace();
        }

}

SERVICE_ACCOUNT_EMAIL是表格的电子邮件地址:XXXXXXX@developer.gserviceaccount.com

如果我删除了credential.refreshToken()行,它在第一次调用Bigquery时在listsDatasets中失败...否则它在credential.refreshToken()上失败并且具有相同的错误.

BigQuery不接受服务帐户身份验证吗？

我相信我已经通过API控制台正确完成了所有工作.我有:

• 打开了对Big Query API的访问权限.
• 在"API访问"选项卡下创建了一个服务帐户.
• 下载了我的私钥(从上面的代码中引用).
• 鉴于我的服务帐户用户"可以编辑"访问"团队"选项卡下.
• 启用结算.

我错过了什么吗？还有什么我需要做的吗？

谢谢..

Answer 1

服务帐户授权方法适用于BigQuery.你不需要打电话credential.refreshToken().确保可以从您的应用程序中读取您的私钥文件.这是一个例子:

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\n----------------\n");
    for (ProjectList.Projects project : projects) {
      System.out.format("%s\n", project.getProjectReference().getProjectId());
    }
  }
}