服务账号是一种可供应用使用的 Google 账号 通过 OAuth 2.0 以编程方式访问 Google API这不需要 人工授权，而是使用只有您的应用才可以使用的密钥文件 访问权限。
在详细了解服务账号之前，请考虑一下 强烈建议您使用 OAuth 2.0 已安装应用流程。虽然 此流程需要手动用户互动才能向应用授权， 步骤只能执行一次，且无需在生产环境中执行。 此流程生成的刷新令牌永不过期，可以缓存和 部署到不同的环境中，并可用于在 无需用户互动即可满足需求
仍在阅读？好的，你可以在以下任一国家/地区使用服务账号 方式：
- 制作展示广告和与您合作的 Video 360 用户 服务账号。在这种情况下，您的服务账号的行为将与 可让您访问所有合作伙伴和广告客户 用户的配置这是使用服务的首选方式 采用展示广告与Video 360。
- 使用全网域授权，以代表某人或 更多展示广告和与 G Suite 账号关联的 Video 360 用户 网域。在这种情况下，您必须拥有目标网域的管理员访问权限。 如需 G Suite 和/或网域配置方面的帮助，请参阅 G Suite 支持页面。
前提条件
要使用与 Display &Video 360 相关联的Video 360 用户，请选择 DV360 用户标签页。要使用全网域授权， 选择委托标签页。
DV360 用户
您必须拥有展示广告和与您的服务账号关联的 Video 360 用户。
委托
- 您必须拥有所注册网域的管理员权限 G Suite。
- 您必须设置一个或多个展示广告和与账号关联的 Video 360 用户 。与以下账号关联的用户 不能使用其他域名（例如 gmail.com）。
配置和使用服务账号
DV360 用户
在以下位置生成服务账号密钥： Google API 控制台。
将展示广告与拥有服务账号电子邮件地址的 Video 360 用户 如上一步骤中所述， 管理展示广告网络和Video 360 帮助中心 一篇文章。
使用 新创建的服务账号有关详情，请参阅 样本部分。
委托
在以下位置生成服务账号密钥： Google API 控制台。
将全网域权限委托给此服务账号， 并允许其模拟您域中的用户。当系统提示时，请提供 以下 API 范围：
范围 含义 https://www.googleapis.com/auth/display-video读取/写入权限。 https://www.googleapis.com/auth/display-video-user-management拥有对 users服务的读写权限。仅适用于服务账号用户。使用 新创建的服务账号有关详情，请参阅 样本部分。请注意，您需要提供一个账号 并且必须属于为您的服务 账号在上一步中被授予了全网域权限。
如需有关 G Suite 和 / 或网域配置的帮助，请参阅 G Suite 支持页面。
示例
Java
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.services.displayvideo.v3.DisplayVideo;
import com.google.api.services.displayvideo.v3.DisplayVideoScopes;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableSet;
import java.io.FileInputStream;
/**
* This example demonstrates how to authenticate using a service account.
*/
public class AuthenticateUsingServiceAccount {
// Path to a JSON file containing service account credentials for this application. This file can
// be downloaded from the Credentials tab on the Google API Console.
private static final String PATH_TO_JSON_FILE = "ENTER_PATH_TO_CLIENT_SECRETS_HERE";
/**
* An optional Google account email to impersonate. Only applicable to service accounts which have
* enabled domain-wide delegation and wish to make API requests on behalf of an account within
* their domain. Setting this field will not allow you to impersonate a user from a domain you
* don't own (e.g., gmail.com).
*/
private static final String EMAIL_TO_IMPERSONATE = "";
// The OAuth 2.0 scopes to request.
private static final ImmutableSet OAUTH_SCOPES =
ImmutableSet.copyOf(DisplayVideoScopes.all());
private static Credential getServiceAccountCredential(
String pathToJsonFile, String emailToImpersonate) throws Exception {
// Generate a credential object from the specified JSON file.
GoogleCredential credential = GoogleCredential.fromStream(new FileInputStream(pathToJsonFile));
// Update the credential object with appropriate scopes and impersonation info (if applicable).
if (Strings.isNullOrEmpty(emailToImpersonate)) {
credential = credential.createScoped(OAUTH_SCOPES);
} else {
credential =
new GoogleCredential.Builder()
.setTransport(credential.getTransport())
.setJsonFactory(credential.getJsonFactory())
.setServiceAccountId(credential.getServiceAccountId())
.setServiceAccountPrivateKey(credential.getServiceAccountPrivateKey())
.setServiceAccountScopes(OAUTH_SCOPES)
// Set the email of the user you are impersonating (this can be yourself).
.setServiceAccountUser(emailToImpersonate)
.build();
}
return credential;
}
public static void main(String[] args) throws Exception {
// Build service account credential.
Credential credential = getServiceAccountCredential(PATH_TO_JSON_FILE, EMAIL_TO_IMPERSONATE);
// Create a DisplayVideo service instance.
//
// Note: application name below should be replaced with a value that identifies your
// application. Suggested format is "MyCompany-ProductName/Version.MinorVersion".
DisplayVideo service =
new DisplayVideo.Builder(credential.getTransport(), credential.getJsonFactory(), credential)
.setApplicationName("displayvideo-java-service-acct-sample")
.build();
// Make API requests.
}
}
Python
"""This example demonstrates how to authenticate using a service account.
An optional Google account email to impersonate may be specified as follows:
authenticate_using_service_account.py <path_to_json_file> -i <email>
This optional flag only applies to service accounts which have domain-wide
delegation enabled and wish to make API requests on behalf of an account
within that domain. Using this flag will not allow you to impersonate a
user from a domain you don't own (e.g., gmail.com).
"""
import argparse
import sys
from googleapiclient import discovery
import httplib2
from oauth2client import client
from oauth2client import tools
from oauth2client.service_account import ServiceAccountCredentials
# Declare command-line flags.
argparser = argparse.ArgumentParser(add_help=False)
argparser.add_argument(
'path_to_service_account_json_file',
help='Path to the service account JSON file to use for authenticating.')
argparser.add_argument(
'-i',
'--impersonation_email',
help='Google account email to impersonate.')
API_NAME = 'displayvideo'
API_VERSION = 'v3'
API_SCOPES = ['https://www.googleapis.com/auth/display-video']
def main(argv):
# Retrieve command line arguments.
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter,
parents=[tools.argparser, argparser])
flags = parser.parse_args(argv[1:])
# Authenticate using the supplied service account credentials
http = authenticate_using_service_account(
flags.path_to_service_account_json_file,
flags.impersonation_email)
# Build a service object for interacting with the API.
service = discovery.build(API_NAME, API_VERSION, http=http)
# Make API requests.
def authenticate_using_service_account(path_to_service_account_json_file,
impersonation_email):
"""Authorizes an httplib2.Http instance using service account credentials."""
# Load the service account credentials from the specified JSON keyfile.
credentials = ServiceAccountCredentials.from_json_keyfile_name(
path_to_service_account_json_file,
scopes=API_SCOPES)
# Configure impersonation (if applicable).
if impersonation_email:
credentials = credentials.create_delegated(impersonation_email)
# Use the credentials to authorize an httplib2.Http instance.
http = credentials.authorize(httplib2.Http())
return http
if __name__ == '__main__':
main(sys.argv)
PHP
/**
* This example demonstrates how to authenticate using a service account.
*
* The optional flag email parameter only applies to service accounts which have
* domain-wide delegation enabled and wish to make API requests on behalf of an
* account within that domain. Using this flag will not allow you to impersonate
* a user from a domain that you don't own (e.g., gmail.com).
*/
class AuthenticateUsingServiceAccount
{
// The OAuth 2.0 scopes to request.
private static $OAUTH_SCOPES = [Google_Service_DisplayVideo::DISPLAY_VIDEO];
public function run($pathToJsonFile, $email = null)
{
// Create an authenticated client object.
$client = $this->createAuthenticatedClient($pathToJsonFile, $email);
// Create a Dfareporting service object.
$service = new Google_Service_DisplayVideo($client);
// Make API requests.
}
private function createAuthenticatedClient($pathToJsonFile, $email)
{
// Create a Google_Client instance.
//
// Note: application name should be replaced with a value that identifies
// your application. Suggested format is "MyCompany-ProductName".
$client = new Google_Client();
$client->setApplicationName('PHP service account sample');
$client->setScopes(self::$OAUTH_SCOPES);
// Load the service account credentials.
$client->setAuthConfig($pathToJsonFile);
// Configure impersonation (if applicable).
if (!is_null($email)) {
$client->setSubject($email);
}
return $client;
}
}