How to do Website Authentication in Java Applet?

Question

I have a wireless IP camera and I want to make my own web page to show its live stream. The address of the stream is "http://192.168.1.2:8082/index.cgi" (supposed) and it requires User authentication. This means that when we enter the above URL in browser it asks for username and password.

All what I want is that to make a java applet, on loading the java applet, it should authenticate the URL and show the image/stream.

This is the situation, now the basic problem is that

Q: How to do Http authentication in Java applet?

I shall be thankful for every answer.

Answer 1

You can achieve it by making an HttpURLConnection and appending username and password with the URL. As:

URL myURL = new URL("http://192.168.1.2:8082/index.cgi?username=user&password=");
HttpURLConnection myConnection = (HttpURLConnection) myURL.openConnection();
myConnection.setDoOutput(false);
int status = ((HttpURLConnection) myConnection).getResponseCode();

Alternatively (instead of appending username/password to url), you can try( not sure if it is allowed in Applet) setting the default authenticator for http requests like this:

Authenticator.setDefault (new Authenticator() {
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication ("username", "password".toCharArray());
    }
});

You can also use Apache HttpComponents HttpClient which is very easy to use. To know more about how HTTP requests work in Java, see this answer.