配置客户端

创建了 OAuth 2.0 凭据和客户端库安装，就可以开始使用展示广告和Video 360 API。通过以下方式了解如何授权、配置客户端和发出第一个请求：按照以下快速入门操作。

Java

导入必要的库。

import static java.nio.charset.StandardCharsets.UTF_8;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.util.Utils;
import com.google.api.services.displayvideo.v3.DisplayVideo;
import com.google.api.services.displayvideo.v3.DisplayVideo.Advertisers;
import com.google.api.services.displayvideo.v3.model.Advertiser;
import com.google.api.services.displayvideo.v3.model.ListAdvertisersResponse;
import java.io.Reader;
import java.nio.file.Files;
import java.nio.file.Paths;

加载客户端密钥文件并生成授权凭据。

首次执行此步骤时，系统会要求您接受授权。接受之前，请确保您已使用有权访问展示广告网络和Video 360。您的应用将获得授权来代表当前登录的账号访问数据。请参阅我们的授权请求指南请访问发布商学院Video 360 用户权限。

// Read client secrets file.
GoogleClientSecrets clientSecrets;
try (Reader reader = Files.newBufferedReader(Paths.get(path-to-client-secrets-file), UTF_8)) {
  clientSecrets = GoogleClientSecrets.load(Utils.getDefaultJsonFactory(), reader);
}

// Generate authorization credentials.
// Set up the authorization code flow.
GoogleAuthorizationCodeFlow flow =
    new GoogleAuthorizationCodeFlow.Builder(
        Utils.getDefaultTransport(),
        Utils.getDefaultJsonFactory(),
        clientSecrets,
        oauth-scopes)
    .build();

Credential credential =
    new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");

创建已获授权的 API 客户端。

// Create authorized API client.
DisplayVideo service =
    new DisplayVideo.Builder(credential.getTransport(), credential.getJsonFactory(), credential)
        .setApplicationName("displayvideo-java-installed-app-sample")
        .build();

执行一项操作。

// Perform an operation.
// Retrieve and print the first ten advertisers under a partner.
ListAdvertisersResponse response =
    service
        .advertisers()
        .list()
        .setPartnerId(partner-id)
        .setPageSize(10)
        .execute();
if (response.getAdvertisers().size() > 0) {
  for (int i = 0; i < response.getAdvertisers().size(); i++) {
    System.out.printf(
        "ID: %s Display Name: %s%n",
        response.getAdvertisers().get(i).getAdvertiserId(),
        response.getAdvertisers().get(i).getDisplayName());
  }
} else {
  System.out.print("No advertisers found.");
}

Python

导入必要的库。

from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient import discovery

加载客户端密钥文件并生成授权凭据。

首次执行此步骤时，系统会要求您接受授权。接受之前，请确保您已使用有权访问展示广告网络和Video 360。您的应用将获得授权来代表当前登录的账号访问数据。请参阅我们的授权请求指南请访问发布商学院Video 360 用户权限。
```
# Set up a flow object to create the credentials using the
# client secrets file and OAuth scopes.
credentials = InstalledAppFlow.from_client_secrets_file(
    path-to-client-secrets-file, oauth-scopes).run_local_server()
```

创建已获授权的 API 客户端。

# Build the discovery document URL.
discovery_url = f'https://displayvideo.googleapis.com/$discovery/rest?version=v3'

# Build the API service.
service = discovery.build(
    'displayvideo',
    'v3',
    discoveryServiceUrl=discovery_url,
    credentials=credentials)

执行一项操作。

# Build advertisers.list request.
request = service.advertisers().list(
    partnerId=partner-id, pageSize='10')

# Execute request.
response = request.execute()

# Print response.
if len(response['advertisers']) > 0:
  for advertiser in response['advertisers']:
    print(f'ID: {advertiser["advertiserId"]} Display Name: {advertiser["displayName"]}')
else:
  print('No advertisers found.')

PHP

此示例假定您运行的是带有内置 Web 服务器的 PHP，并且已将您的凭据配置为重定向到相关网页。对于例如，index.php 文件中的这段代码可以使用以下代码运行命令和凭据配置为在下列时间后重定向到 http://localhost:8000 身份验证：

php -S localhost:8000 -t ./

下载并安装 Google API PHP 客户端。

首选方法是使用 Composer：

composer require google/apiclient:^2.15.1 google/apiclient-services:=0.332.0

安装后，请务必添加自动加载器：

require_once '/path/to/your-project/vendor/autoload.php';

创建一个 Google_Client 对象。
```
$client = new Google_Client();
```

设置客户端，根据需要重定向到身份验证网址，并检索访问令牌。

// Set up the client.
$client->setApplicationName('DV360 API PHP Samples');
$client->addScope(oauth-scope);
$client->setAccessType('offline');
$client->setAuthConfigFile(path-to-client-secrets-file);

// If the code is passed, authenticate. If not, redirect to authentication page.
if (isset($_GET['code'])) {
  $client->authenticate($_GET['code']);
} else {
  $authUrl = $client->createAuthUrl();
  header('Location: ' . $authUrl);
}

// Exchange authorization code for an access token.
$accessToken = $client->getAccessToken();
$client->setAccessToken($accessToken);

为展示广告构建客户端和Video 360 API 服务。
```
$service = new Google_Service_DisplayVideo($client);
```

执行一项操作。

// Configure params for the advertisers.list request.
$optParams = array('pageSize' => 10, 'partnerId' => partner-id);

// Execute the request.
$result = $service->advertisers->listAdvertisers($optParams);

// Print the retrieved advertisers.
if (!empty($result->getAdvertisers())) {
  print('<pre>');
  foreach ($result->getAdvertisers() as $advertiser) {
    printf('<p>ID: %s, Display Name: %s</p>', $advertiser->advertiserId, $advertiser->displayName);
  }
  print('</pre>');
} else {
  print '<p>No advertisers found.</p>';
}

安装客户端库

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