L'obtention de postes à partir d'une page à l'aide de Facebook4j api

Voici un exemple minimal pour votre problème:
Notez que vous pouvez obtenir le jeton d'accès et l'ID de la page de https://developers.facebook.com/tools/explorer
Utilisez ce code ci-dessous dans votre code:

import facebook4j.Comment;
import facebook4j.Facebook;
import facebook4j.FacebookException;
import facebook4j.FacebookFactory;
import facebook4j.PagableList;
import facebook4j.Post;
import facebook4j.Reading;
import facebook4j.ResponseList;
import facebook4j.auth.AccessToken;
public class PostsFromPageExtractor {
/**
* A simple Facebook4J client which
* illustrates how to access group feeds /posts /comments.
* 
* @param args
* @throws FacebookException 
*/
public static void main(String[] args) throws FacebookException {
//Generate facebook instance.
Facebook facebook = new FacebookFactory().getInstance();
//Use default values for oauth app id.
facebook.setOAuthAppId("", "");
//Get an access token from: 
//https://developers.facebook.com/tools/explorer
//Copy and paste it below.
String accessTokenString = "PASTE_YOUR_ACCESS_TOKEN_HERE";
AccessToken at = new AccessToken(accessTokenString);
//Set access token.
facebook.setOAuthAccessToken(at);
//We're done.
//Access group feeds.
//You can get the group ID from:
//https://developers.facebook.com/tools/explorer
//Set limit to 25 feeds.
ResponseList<Post> feeds = facebook.getFeed("187446750783",
new Reading().limit(25));
//For all 25 feeds...
for (int i = 0; i < feeds.size(); i++) {
//Get post.
Post post = feeds.get(i);
//Get (string) message.
String message = post.getMessage();
//Print out the message.
System.out.println(message);
//Get more stuff...
PagableList<Comment> comments = post.getComments();
String date = post.getCreatedTime().toString();
String name = post.getFrom().getName();
String id = post.getId();
}           
}
}