Java: get all the cookies from http response header

If you are using URLConnection class from java, then below code will be helpful for you to extract the Set-Cookie header values from the HTTP response. The below function just return you the cookies from google.com,

public String getCookies() throws Exception{
    String headerName = null, returnCookie = "";
    
    // creeating the url connection object
    URL url = new URL("http://www.google.com");
    URLConnection urlConnection = url.openConnection();
    
    // checking for each headers
    for (int i=1; (headerName = urlConnection.getHeaderFieldKey(i))!=null; i++) {
        // if its set-cookie, then take it
        if (headerName.equalsIgnoreCase("Set-Cookie")) {                  
            String cookie = urlConnection.getHeaderField(i);
            returnCookie += cookie + "\n";
        }
    }
    return returnCookie;
}

Actually this function will help you to find other HTTP headers. you'll just need to replace the Set-Cookie with your header. It can be content encoding, Location, etc.

Thanks
Wolf