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,那么在第一次调用Bigquery时,它会在listsDatasets中失败...否则它会在credential.refreshToken()上失败并出现相同的错误。
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:
我错过了什么吗?还有什么我需要做的吗?
谢谢..
答案 0 :(得分:9)
服务帐户授权方法适用于BigQuery。您无需致电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());
}
}
}
答案 1 :(得分:0)
使用Google Cloud BigQuery client libraries的服务帐户密钥进行身份验证 (Maven package)你可以use Application Default Credentials。
首先将GOOGLE_APPLICATION_CREDENTIALS
环境变量设置为服务帐户JSON密钥文件的完整路径。在您的代码中,使用默认实例创建BigQuery服务对象。
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryOptions;
...
BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();
这是推荐的方式,因为它可以在多个环境中使用相同的代码,例如在Google Compute Engine上,服务帐户是内置的,而不是使用密钥文件。
或者,您可能希望construct a credentials object manually from a service account key file并使用它创建BigQuery服务对象。
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials;
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryOptions;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
...
// TODO: update to your key path.
File credentialsPath = new File("service_account.json");
GoogleCredentials credentials;
try (FileInputStream serviceAccountStream = new FileInputStream(credentialsPath)) {
credentials = ServiceAccountCredentials.fromStream(serviceAccountStream);
}
// Instantiate a client.
BigQuery bigquery =
BigQueryOptions.newBuilder()
.setCredentials(credentials)
.build()
.getService();