How to modify the header of a HttpUrlConnection

Question

Im trying to improve the Java Html Document a little but i\'m running into problems with the HttpUrlConntion. One thing is that some servers block a request if

Answer 1

I solved my problem. We can just send the header to application/json and pass the body as a json object. That simply solves the issue.

Answer 2

If you use Apache HttpClient to manage your programmatic HTTP connectivity you get an extremely useful API which makes creating connections (and optional automatic re-connecting on fail), setting Headers, posts vs gets, handy methods for retrieving the returned content and much much more.

Answer 3

Open the URL with URL.openConnection. Optionally cast to HttpURLConnection. Call URLConnection.setRequestProperty/addRequestProperty.

The default User-Agent header value is set from the "http.agent" system property. The PlugIn and WebStart allow you to set this property.