从 Google App Engine 应用程序下载数据
http://code.google.com/appengine/docs/python/tools /uploadingdata.html
这里解释了如何从gAE应用程序下载数据，
首先要做的是设置remote_api。 批量加载器工具使用remote_api与App Engine上运行的应用程序进行通信，remote_api是App Engine运行时环境中包含的请求处理程序，允许具有正确凭据的远程应用程序远程访问数据存储区。有两种安装remote_api的方法：使用builtins指令自动安装，或者使用url指令手动安装。
我使用内置指令启用了它： 我相应地更改了 app.yaml
builtins:
- remote_api: on
它给出了该指令找到remote_api的“include.yaml”文件并将请求处理程序映射到/_ah/remote_api。只有应用程序的管理员才能访问此 URL。
但我从来没有遇到过 include.yaml
之后，我尝试使用那里给出的命令下载数据
appcfg.py download_data --application=<app-id> --url=http://<appname>.appspot.com/[remote_api_path] --filename=<data-filename>
，我收到一条错误消息，说权限被拒绝，我很困惑。我也无法使用“create_bulkloader_config”命令，收到相同的错误，我很困惑，谢谢
http://code.google.com/appengine/docs/python/tools/uploadingdata.html
Here it is explained how to download data from a gAE app,
First thing to do is setting up remote_api.
The bulk loader tool communicates with your application running on App Engine using remote_api, a request handler included with the App Engine runtime environment that allows remote applications with the proper credentials to access the datastore remotely. There are two ways to install remote_api: automatically using the builtins directive, or you manually using the url directive.
I enabled it using builtins directive:
i changed app.yaml accordingly
builtins:
- remote_api: on
Its given that this directive finds "include.yaml" file for the remote_api and maps the request handler to /_ah/remote_api. Only administrators of the application can access this URL.
but i never came across include.yaml
after that i tried downloading data using the the commands given there
appcfg.py download_data --application=<app-id> --url=http://<appname>.appspot.com/[remote_api_path] --filename=<data-filename>
i'm getting an error saying permission denied, i'm confused. i am also not able to use "create_bulkloader_config" command, getting the same error, I'm confused, Thanks
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您的应用程序是否使用开放 ID/联合登录？远程 API 不适用于开放 ID，但这里有一个解决方法：
http://blog.notdot.net/2010/06/Using-remote-api-with-OpenID-authentication
Are you using open ID / federated login for your app? The remote API does not work with open ID, but there is a workaround here:
http://blog.notdot.net/2010/06/Using-remote-api-with-OpenID-authentication
替换
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您应该以管理员用户身份运行命令行。您收到的权限被拒绝错误是指 appcfg 脚本无法访问本地文件。
You Should run the commandline as an admin user. The permission denied error you are getting refers to the appcfg script not being able to access a local file.