获取数据集

创建数据集并向其上传数据后，您可以使用 HTTP GET 请求访问数据集。本页面介绍了如何列出所有数据集、如何获取有关特定数据集的信息，以及如何从数据集下载数据。

列出所有数据集

向 listdatasets 端点发送 HTTP GET 请求来列出所有数据集：

https://mapsplatformdatasets.googleapis.com/v1/projects/PROJECT_NUMBER_OR_ID/datasets

例如：

curl -X GET \
-H 'X-Goog-User-Project: PROJECT_NUMBER_OR_ID' \
-H 'Authorization: Bearer $TOKEN' \
https://mapsplatformdatasets.googleapis.com/v1/projects/PROJECT_NUMBER_OR_ID/datasets

此调用会返回以下形式的响应：

 
{
  "datasets": [
    {
      "name": "projects/PROJECT_NUMBER_OR_ID/datasets/f57074a0-a8b6-403e-9df1-e8a9e4f9fc46",
      "displayName": "My Test Dataset",
      "versionId": "5fb34e-1405-4ecd-8f81-31f1c07",
      "usage": [
        "USAGE_DATA_DRIVEN_STYLING"
      ],
      "gcsSource": {
        "inputUri": "gs://mybucket/my.csv",
        "fileFormat": "FILE_FORMAT_CSV"
      },
      "createTime": "2023-03-24T14:47:37.308977Z",
      "updateTime": "2023-03-24T14:48:05.053114Z",
      "versionCreateTime": "2023-03-24T14:48:05.053114Z",
      "status": {
        "state": "STATE_COMPLETED"
      }
    },
    {
      "name": "projects/PROJECT_NUMBER_OR_ID/datasets/2c8ae479-96704-89c6435ca959",
      "displayName": "My Other Test Dataset",
      "versionId": "0d2e3-b9da-47cc-819f-7ac67562",
      "usage": [
        "USAGE_DATA_DRIVEN_STYLING"
      ],
      "localFileSource": {
        "fileFormat": "FILE_FORMAT_CSV"
      },
      "createTime": "2023-03-24T14:41:52.579755Z",
      "updateTime": "2023-03-24T14:42:56.784122Z",
      "versionCreateTime": "2023-03-24T14:42:56.784122Z",
      "status": {
        "state": "STATE_COMPLETED"
      }
    }
  ]
}

获取有关数据集的信息

如需获取有关特定数据集的信息，请向获取数据集端点发送 HTTP GET 请求，并且该请求还包括该数据集的 ID：

https://mapsplatformdatasets.googleapis.com/v1/projects/PROJECT_NUMBER_OR_ID/datasets/DATASET_ID

例如：

curl -X GET \
-H 'X-Goog-User-Project: PROJECT_NUMBER_OR_ID' \
-H 'Authorization: Bearer $TOKEN' \
https://mapsplatformdatasets.googleapis.com/v1/projects/PROJECT_NUMBER_OR_ID/datasets/f57074a0-a8b6-403e-9df1-e8a9e4f9fc46

此请求会返回以下形式的响应：

{
  "name": "projects/PROJECT_NUMBER_OR_ID/datasets/f57074a0-a8b6-403e-9df1-e8a9e4f9fc46",
  "displayName": "My Test Dataset",
  "versionId": "5fb34e-1405-4ecd-8f81-31f1c07",
  "usage": [
    "USAGE_DATA_DRIVEN_STYLING"
  ],
  "gcsSource": {
    "inputUri": "gs://mybucket/my.csv",
    "fileFormat": "FILE_FORMAT_CSV"
  },
  "createTime": "2023-03-24T14:47:37.308977Z",
  "updateTime": "2023-03-24T14:48:05.053114Z",
  "versionCreateTime": "2023-03-24T14:48:05.053114Z",
  "status": {
    "state": "STATE_COMPLETED"
  }
}

下载数据集

如需下载数据集中的数据，请向下载数据集端点发送 HTTP GET 请求，并且该端点还包含数据集 ID：

https://mapsplatformdatasets.googleapis.com/v1/projects/PROJECT_NUMBER_OR_ID/datasets/DATASET_ID:download?alt=media

例如：

curl -X GET -L \
-H 'X-Goog-User-Project: PROJECT_NUMBER_OR_ID' \
-H 'Authorization: Bearer $TOKEN' \
--output LOCAL_LOCATION_TO_OUTPUT \
https://mapsplatformdatasets.googleapis.com/download/v1/projects/PROJECT_NUMBER_OR_ID/datasets/f57074a0-a8b6-403e-9df1-e8a9e4f9fc46:download?alt=media

在此示例中，您可以使用 cURL --output 选项指定保存所下载数据的文件的名称。例如，以下 --output 标志指定将数据集下载到名为 myjson.json 的文件中，该文件位于用于运行 cURL 命令的同一目录中：

--output myjson.json

或使用以下标志将数据下载到 /tmp 目录中的 myjson.json：

--output /tmp/myjson.json