CODEWITHSUNDEEP
javafacebookfacebook-graph-apispring-social
Angelo Immediata
Angelo Immediata

Reputation: 6944

Java Read Facebook Wall

I'm building a web portal by using Java; besides other requirements, I'm struggling my mind one one very simple (at least at first view) requirement: my customer wants on his portal the first N posts of his facebook wall and he wants to read the first N tweets of his twitter page

Since my java code is based on Spring, I wanted to use spring social, spring social twitter and spring social facebook in order to satisfy the requirement

With twitter I had no problem; in fact I

In a couple of hours, all worked pretty good

Problems were born with facebook and it's a lot of time I'm fighting with it I passed from spring social to facebook4j (since this last one seems to me stronger). I did the following

But I'm not able in reading posts from my wall Is there anyone who was able in satisfying this kind of scenario? here my facebook4j code

private static final Logger log = LoggerFactory.getLogger(FacebookTest.class.getName());
public static void main (String[] a)
{
    try
    {
        ConfigurationBuilder cfgBui = new ConfigurationBuilder();
        cfgBui.setDebugEnabled(true);
        cfgBui.setOAuthAppId(myAppId);
        cfgBui.setOAuthAppSecret(myAppSecret);
        cfgBui.setUseSSL(true);
        Configuration cfg = cfgBui.build();
        FacebookFactory ff = new FacebookFactory(cfg);
        OAuthSupport support = new OAuthAuthorization(cfg);
        support.setOAuthPermissions("read_stream");
        AccessToken appAccessToken = support.getOAuthAppAccessToken();
        Facebook face = ff.getInstance(appAccessToken );
        ResponseList<Post> posts = face.searchPosts("test");
        for (Post post : posts)
        {
            System.out.println(post.getId());
        }
    } catch (Exception e)
    {
        log.error("Errore", e);
    }
}

As far as I understood, I should need the user access token, but I don't know how to generate it; should I create a login flow and show to the user the FB login dialog? If so, why should I create app id and app secret? They have no sense in my scenario Moreover...in my case...the server side should authenticate on FB and read posts from a well know user wall (the wall of my customer...) so....where should I present the login dialog? where should I redirect after the FB login?

Is there any good man :) who can clarify to me the FB read post flow?

Upvotes: 0

Views: 1564

Answers (2)

Paul John
Paul John

Reputation: 1661

If you use spring-social-facebook, you could let the user login via (front-end login flow) and then you can access the users wall. However, user would need to login and authorize your app to perform the operations.

Here is a spring social sample project that demo's how spring-social-facebook login is done https://github.com/spring-projects/spring-social-samples

Also, within your java code you can use feedoperations to gather information about home feed and also query against it. Checkout the documentation. 

    facebook.feedOperations().

Upvotes: 1

andyrandy
andyrandy

Reputation: 73984

You MUST use one of the possibilities to authorize the user (with read_stream) in order to get access to his stream. Here´s the link to all the possibilities: https://developers.facebook.com/docs/facebook-login/v2.2

You can also generate Access Tokens with the Graph API Explorer: https://developers.facebook.com/tools/explorer/

Detailed information about Access Tokens and how to generate them can be found in the following links:

Keep in mind that an Extended User Token only lasts for 60 days, after that your customer would have to refresh it manually. In general, you are not allowed to use User Profiles for commercial reasons, and it´s very unusual to show a User stream on a website.

Better: Use a Facebook Page. /page-id/feed with an Extended Page Token that lasts forever.

Upvotes: 3

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