Struts2 and Hibernate : Dynamically getting fields on UI upon updating my database.

I have a table in my database with fields(2 text boxes and 2 dropdown). And my jsp renders them correctly with respective values. Now What I want is whenever I add any field manually in my database how dynamically I can render it on my jsp using Struts2.
Or U can say ,the moment I add fields in my database,it should get reflected in my UI(jsp ).

Any help will be appreciated. Pls

How should I proceed??? Will ajax help me in such case????