注意:您正在查看 API 的 REST 接口的文档。我们的大多数官方客户端库都使用 gRPC。如需了解详情,请参阅
REST 简介。
JSON 映射
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
使用 Google Ads API 的 REST 接口时,您处理的是 Google Ads API 的 .proto 描述符文件中定义的相同资源和类型的 JSON 表示形式。JSON 编码方案遵循协议缓冲区语言指南的 JSON 映射部分中所述的规范编码方案。
一般来说,与服务之间往来的所有顶级消息都是单个 JSON 对象。大多数 mutate 请求都包含一个 operations
数组,该数组本身包含许多 create
、update
或 delete
操作。同样,search
响应是 JSON 对象,其中包含一个 results
数组,其中包含查询的结果集。
标识符从 snake_case(在协议缓冲区中)转换为 JSON 中的 lowerCamelCase。不过,在使用 search
或 searchStream
发送 Google Ads 查询语言查询时,此规则有一个值得注意的例外情况。无论您使用哪个接口,查询语言本身都使用蛇形命名法。不过,REST 中的查询结果会以普通 JSON 对象的形式返回,并且其标识符采用小驼峰式命名法。
例如,用于提取账号中有效关键字列表的查询在查询本身中使用蛇形命名法 (ad_group_criterion
,而非 adGroupCriterion
):
POST /v21/customers/CUSTOMER_ID/googleAds:searchStream HTTP/1.1
Host: googleads.googleapis.com
Content-Type: application/json
Authorization: Bearer ACCESS_TOKEN
developer-token: DEVELOPER_TOKEN
{
"query": "SELECT ad_group_criterion.keyword.text
FROM ad_group_criterion
WHERE ad_group_criterion.type = 'KEYWORD'
AND ad_group_criterion.status = 'ENABLED'"
}
不过,响应是对象的 JSON 表示形式(由于此请求使用 searchStream
,因此封装在 JSON 数组中),并使用驼峰式标识符 adGroupCriterion
:
[
{
"results": [
{
"adGroupCriterion": {
"resourceName": "customers/1842689525/adGroupCriteria/55771861891~10003060",
"keyword": {
"text": "pay per click"
}
}
},
...
]
}
]
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最后更新时间 (UTC):2025-08-27。
[null,null,["最后更新时间 (UTC):2025-08-27。"],[[["\u003cp\u003eThe Google Ads API's REST interface uses JSON to represent resources and types, following the protocol buffers' JSON encoding scheme.\u003c/p\u003e\n"],["\u003cp\u003eTop-level messages in the REST interface are JSON objects, with mutate requests typically containing an \u003ccode\u003eoperations\u003c/code\u003e array and search responses containing a \u003ccode\u003eresults\u003c/code\u003e array.\u003c/p\u003e\n"],["\u003cp\u003eIdentifiers are generally transformed from \u003cem\u003esnake_case\u003c/em\u003e to \u003cem\u003elowerCamelCase\u003c/em\u003e in JSON, with the exception of Google Ads Query Language queries, which use snake case.\u003c/p\u003e\n"],["\u003cp\u003eWhile Google Ads Query Language queries use snake case, the results returned through the REST interface utilize \u003cem\u003elowerCamelCase\u003c/em\u003e for identifiers within the JSON response objects.\u003c/p\u003e\n"]]],[],null,["# JSON Mappings\n\nWhen using the Google Ads API's REST interface, you're working with JSON\nrepresentations of the same resources and types defined in the Google Ads API's\n[.proto descriptor](https://github.com/googleapis/googleapis/tree/master/google/ads/googleads) files. The JSON encoding scheme follows the\ncanonical encoding scheme described in the\n[JSON Mapping](/protocol-buffers/docs/proto3#json) section of the protocol\nbuffers *Language Guide*.\n\nIn general, all top-level messages to and from\n[services](https://github.com/googleapis/googleapis/tree/master/google/ads/googleads/v21/services) are single JSON objects.\nMost mutate requests contain an `operations` array that itself contains many\n`create`, `update`, or `delete` operations. Similarly, `search` responses are\nJSON objects containing a `results` array with your query's result set.\n\nIdentifiers are transformed from *snake_case* (in protocol buffers) to\n*lowerCamelCase* in JSON. One notable caveat to this rule is when using\n`search` or `searchStream` to send [Google Ads Query Language](/google-ads/api/docs/query/overview)\nqueries. The query language itself uses snake case, regardless of which\ninterface you're using. However, the results of a query in REST are returned as\nnormal JSON objects and have their identifiers in lowerCamelCase.\n\nFor example, a query to fetch a list of active keywords in an account uses\nsnake case inside the query itself (`ad_group_criterion`, not `adGroupCriterion`): \n\n```http\nPOST /v21/customers/\u003cvar translate=\"no\"\u003eCUSTOMER_ID\u003c/var\u003e/googleAds:searchStream HTTP/1.1\nHost: googleads.googleapis.com\nContent-Type: application/json\nAuthorization: Bearer \u003cvar translate=\"no\"\u003eACCESS_TOKEN\u003c/var\u003e\ndeveloper-token: DEVELOPER_TOKEN\n\n{\n \"query\": \"SELECT ad_group_criterion.keyword.text\n FROM ad_group_criterion\n WHERE ad_group_criterion.type = 'KEYWORD'\n AND ad_group_criterion.status = 'ENABLED'\"\n}\n```\n\nHowever, the response is a JSON representation of the objects (wrapped in a JSON\narray since this request uses `searchStream`) and uses the camelCase identifier\n`adGroupCriterion` instead: \n\n```javascript\n[\n {\n \"results\": [\n {\n \"adGroupCriterion\": {\n \"resourceName\": \"customers/1842689525/adGroupCriteria/55771861891~10003060\",\n \"keyword\": {\n \"text\": \"pay per click\"\n }\n }\n },\n ...\n ]\n }\n]\n```"]]