表单验证: http://blogs.technet.com/b/ptsblog/archive/2013/09/20/configuring-sharepoint-2013-forms-based-authentication-with-sqlmembershipprovider.aspx
Windows Live ID:
http://technet.microsoft.com/en-us/library/ff973117(v=office.14).aspx
还可以自己写Claims的provider