java - HttpClient : How to send post request to page that auto generate random field name?

Question

A page is auto generating random name every time for a text input field. How can I get this name before executing post request, so I can use that name at time of adding post parameters in ArrayList<NameValuePair>.

Answer 1

I solved my problem using regex. The file name has pattern of 6 character capital characters. So I used this regex :

.*id=\"([A-Z]{6}).*