URLConnection Error - java.io.IOException: Server returned HTTP response code: 400 for URL

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

Answer 1

EDIT: You need to find the exact error message that facebook is sending in the response You can modify your code to get the message from the error stream like so:

HttpURLConnection httpConn = (HttpURLConnection)connection;
InputStream is;
if (httpConn.getResponseCode() >= 400) {
    is = httpConn.getErrorStream();
} else {
    is = httpConn.getInputStream();
}

Take a look at how you are passing the user context Here's some information that could help you out:

Look at the error message behind the 400 response code:

"Facebook Platform" "invalid_request" "An active access token must be used to query information about the current user*

You'll find the solution here

HTTP/1.1 400 Bad Request
...
WWW-Authenticate: OAuth "Facebook Platform" "invalid_request" "An active access token must be used to query information about the current user."
...

Answer 2

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.