Question

I am trying to connect to a URL from a desktop app, and I get the error indicated in the Title of my question, but when I tried to connect to the same URL from servlet, all works fine. When I load the URL from browser, all works fine. I am using the same code in the servlet. The code was in a library, when it didn’t work, I pulled the code out to a class in the current project, yet it didn’t work.

The URL https://graph.facebook.com/me.

The Code fragment.

public static String post(String urlSpec, String data) throws Exception {
    URL url = new URL(urlSpec);
    URLConnection connection = url.openConnection();
    connection.setDoOutput(true);
    OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
    writer.write(data);
    writer.flush();

    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    String line = "";
    StringBuilder builder = new StringBuilder();
    while((line = reader.readLine()) != null) {
        builder.append(line);
    }
    return builder.toString();
}   

I’m a little bit confused here, is there something that is present is a servlet that is not a normal desktop app?

Thanks.

FULL STACK TRACE

Feb 8, 2011 9:54:14 AM com.trinisoftinc.jiraffe.objects.FacebookAlbum create
SEVERE: null
java.io.IOException: Server returned HTTP response code: 400 for URL: https://graph.facebook.com/me
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1313)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:234)
        at com.jiraffe.helpers.Util.post(Util.java:49)
        at com.trinisoftinc.jiraffe.objects.FacebookAlbum.create(FacebookAlbum.java:211)
        at com.trinisoftinc.jiraffe.objects.FacebookAlbum.main(FacebookAlbum.java:261)

Answer 1

I finally found the problem. Of course it’s my code. One part of the code I didn’t post is the value of data. data must contain only name and description but I am passing more than name and description.