I write a portlet  but when I want to get query string I must give huge query string too for example I want to take "kat"'s query strings value I must put the other query string

http://localhost:8080/portal/portal/default/default/HelloWorldPortletWindow?action=e&kat=deneme&windowstate=normal&mode=view  

how I can take all the link ? If I take the full url I can parse it
 
Murat ÇOLAK
Bilgi Tek. Direktörlüğü

TÜRKSAT Uydu Haberleşme Kablo TV ve İşletme A.Ş.
Konya Yolu 40. Km. Golbasi / ANKARA - TÜRKİYE
Tel   : +90 312 615 32 64
Faks :  +90 312 499 51 15