I have an application which imports facebook friends as contacts using spring social facebook. I want to invite this facebook friends to join the app. Is there a way to send a private message to selected facebook friends or to post on selected facebook friends' wall using spring social api?
thanks in advance
You can´t post on the wall of a friend (because that would always be spam), and you can´t send a message with the API.
You may want to read this: https://developers.facebook.com/docs/apps/faq#invite_to_app
The proper way is to use the Send/Message Dialog, or the Request Dialog if your App is a game.