我正在尝试通过 Google Documents API v3.0 仅列出根目录中的条目。一些用户拥有数千个文件，因此通过移动数据连接请求完整的提要花费的时间太长。
向文档列表请求添加“q='root' in parents”查询仅返回一个文件，尽管我的根目录中有很多文件。这发生在我们的 REST 应用程序中，并且可以使用 OAuth2 操场进行复制。我还尝试了各种 URL 编码：
https://docs.google.com/feeds/default/private/full?q='root'%20in%20parents
https://docs.google.com/feeds/default/private/full?q=%27root%27+in+parents
https://docs.google.com/feeds/default/private/full?q=%27root%20%20in%20parents
这是 OAuth2 游乐场的输出：
要求：
GET /feeds/default/private/full?q='root'%20in%20parents HTTP/1.1
Host: docs.google.com
Gdata-version: 3.0
Content-length: 0
Authorization: OAuth (removed)
回复：
HTTP/1.1 200
Gdata-version: 3.0
Content-length: 4997
Via: HTTP/1.1 GWA
Content-location: https://docs.google.com/feeds/default/private/full?q='root'%20in%20parents
X-content-type-options: nosniff
Etag: W/"AkAMSXcyfit7ImA9WhJWFU4."
Expires: Tue, 21 Aug 2012 08:46:29 GMT
Vary: Accept, X-GData-Authorization, GData-Version
X-google-cache-control: remote-fetch
Server: GSE
Last-modified: Tue, 21 Aug 2012 08:46:28 GMT
X-xss-protection: 1; mode=block
Cache-control: private, max-age=0, must-revalidate, no-transform
Date: Tue, 21 Aug 2012 08:46:29 GMT
X-frame-options: SAMEORIGIN
Content-type: application/atom+xml; charset=UTF-8; type=feed
-content-encoding: gzip
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