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配置

该库会在 System.getProperty("user.home") + "/ads.properties"。您可以覆盖在运行时使用路径和文件名构建 GoogleAdsClient 时以下任一机制：

调用 fromPropertiesFile(PATH_TO_CONFIG_FILE)，其中 PATH_TO_CONFIG_FILE 是配置文件的路径和文件名。
将环境变量 GOOGLE_ADS_CONFIGURATION_FILE_PATH 设置为配置文件的路径和文件名，然后调用 fromPropertiesFile()。

配置文件的格式为 Java 版属性键值对文件支持的键因所选身份验证流程。

桌面和 Web 应用流程支持的密钥

如果您使用的是桌面设备或 Web 应用流程，支持的密钥如下：

# Credential for accessing Google's OAuth servers.
# Provided by console.cloud.google.com.
api.googleads.clientId=INSERT_CLIENT_ID_HERE

# Credential for accessing Google's OAuth servers.
# Provided by console.cloud.google.com.
api.googleads.clientSecret=INSERT_CLIENT_SECRET_HERE

# Renewable OAuth credential associated with 1 or more Google Ads accounts.
api.googleads.refreshToken=INSERT_REFRESH_TOKEN_HERE

# Token which provides access to the Google Ads API in general. It does not
# grant access to any particular ad account (OAuth is used for this purpose).
api.googleads.developerToken=INSERT_DEVELOPER_TOKEN_HERE

# Required for manager accounts only: Specify the login customer ID used to
# authenticate API calls. This will be the customer ID of the authenticated
# manager account. You can also specify this later in code if your application
# uses multiple manager account + OAuth pairs.
#
# api.googleads.loginCustomerId=INSERT_LOGIN_CUSTOMER_ID_HERE

# Only required if explicitly instructed by the service documentation.
# api.googleads.linkedCustomerId=INSERT_LINKED_CUSTOMER_ID_HERE

# Maximum allowed response payload size, in bytes.
# Customize this to allow response sizes for GoogleAdsService.search and
# GoogleAdsService.searchStream API calls to exceed the default limit of 64MB.
# api.googleads.maxInboundMessageBytes=INSERT_MAX_INBOUND_MESSAGE_BYTES_HERE

服务账号支持的密钥

如果您使用的是服务账号则支持的键如下所示：

# Path to the service account secrets file in JSON format.
# Provided by console.cloud.google.com.
api.googleads.serviceAccountSecretsPath=INSERT_PATH_TO_JSON_HERE

# Email address of the user to impersonate.
# This should be a user who has access to your Google Ads account and is in the same
# Google Apps Domain as the service account.
api.googleads.serviceAccountUser=INSERT_USER_EMAIL_ADDRESS_HERE

# Token which provides access to the Google Ads API in general. It does not
# grant access to any particular ad account (OAuth is used for this purpose).
api.googleads.developerToken=INSERT_DEVELOPER_TOKEN_HERE

# Required for manager accounts only: Specify the login customer ID used to
# authenticate API calls. This will be the customer ID of the authenticated
# manager account. You can also specify this later in code if your application
# uses multiple manager account + OAuth pairs.
#
# api.googleads.loginCustomerId=INSERT_LOGIN_CUSTOMER_ID_HERE

使用环境变量

该库支持所有 Google Ads API 通用的环境变量客户端库。下表显示了与每个配置文件属性相对应的环境变量。

配置文件属性	环境变量
`api.googleads.developerToken`	`GOOGLE_ADS_DEVELOPER_TOKEN`
`api.googleads.clientId`	`GOOGLE_ADS_CLIENT_ID`
`api.googleads.clientSecret`	`GOOGLE_ADS_CLIENT_SECRET`
`api.googleads.refreshToken`	`GOOGLE_ADS_REFRESH_TOKEN`
`api.googleads.serviceAccountSecretsPath`	`GOOGLE_ADS_JSON_KEY_FILE_PATH`
`api.googleads.serviceAccountUser`	`GOOGLE_ADS_IMPERSONATED_EMAIL`
`api.googleads.loginCustomerId`	`GOOGLE_ADS_LOGIN_CUSTOMER_ID`
`api.googleads.linkedCustomerId`	`GOOGLE_ADS_LINKED_CUSTOMER_ID`
`api.googleads.maxInboundMessageBytes`	`GOOGLE_ADS_MAX_INBOUND_MESSAGE_BYTES`

设置适当的环境变量后，请 GoogleAdsClient（通过对构建器调用 fromEnvironment()）。

GoogleAdsClient googleAdsClient = GoogleAdsClient.newBuilder()
  .fromEnvironment()
  .build();

组合配置方法

GoogleAdsClient 及其构建器支持组合不同的配置策略例如，您可以使用环境变量来配置实例凭据以及使用以下代码段。

GoogleAdsClient googleAdsClient = GoogleAdsClient.newBuilder()
    .fromEnvironment()
    .fromPropertiesFile()
    .build();

在此示例中，客户端库将使用属性文件中的值通过环境变量和创建相应的条目对于相反的行为，只需调用 fromPropertiesFile()，fromEnvironment()之前。

您可以使用构建器的其他配置在运行时进行进一步更改方法，然后再调用 build()。