How to load images from URL in JavaFx if recieving HTTP Error 403 [duplicate]

Answer 1

It’s not an https issue. It seems cdn.discordapp.com requires a User-Agent header in the HTTP request. Furthermore, the site appears to only accept certain formats for User-Agent. It turns out the User-Agent supplied by wget is accepted:

Image createImage(String url)
throws IOException {
    URLConnection conn = new URL(url).openConnection();
    conn.setRequestProperty("User-Agent", "Wget/1.13.4 (linux-gnu)");

    try (InputStream stream = conn.getInputStream()) {
        return new Image(stream);
    }
}

Without a User-Agent header in the request, the site gives an HTTP 403 Forbidden response.