How can I add a ClientAccessPolicy.xml file to the SharePoint 2010 root folder?

In a Visual Studio 2010 SharePoint (2010) project, we can add mapped SharePoint folders, including the {SharePointRoot} folder. When I deploy my project, I can see that the root files end up in the 14-hive, but they never appear in the web site root.

What I really want to accomplish to unit test my S开发者_如何转开发ilverlight application which communicates with a SharePoint site. I have tried many variations on the subject, from adding MS unit tests to common class library project, test projects, and finally a Silverlight test project.

When I run my Silverlight test project, all tests that access the SharePoint site fails due to a missing ClientAccessPolicy.xml. I really don't want this file in the SharePoint site, as we don't want to grant access to outside Silverlight apps.

You can create a Feature to provision files in your web. See how to provision a file.

You can then staple this feature to your site definition or activate it manually (e.g. script in in your deployment scripts).

There may be other ways but the way I do it is with SharePoint Designer. If you open the site you can just drag+drop the ClientAccessPolicy.xml into the root.