2 Replies Latest reply: Apr 25, 2012 11:44 AM by fpalma RSS

How to load the form values automatically?

fpalma Newbie

Hi all!


I have done a servlet to manage one form, but when I want to get the values introduced by the user, I have to access to the parameter of the form and update manually the class corresponding to the parameter. This is my code:


When the jsp file is loaded, the user sees the default value from the class "priceIncrease":


    <input name="increasepercent" path="percentage" value="${priceIncrease.getPercentage()}" />


When the method doPost is called by the form, the class "priceIncrease" is not updated with the value modified by the user, so I have to do this:


    String increase1 = (String) request.getParameter("increasepercent");                     // access to the parameter of the form

    PriceIncrease increase2 = (PriceIncrease) contexto.getAttribute("priceIncrease"); // access to the corresponding class

    increase2.setPercentage(Integer.parseInt(increase1));                                            // update the class


How can I update the corresponding class (priceIncrease) automatically?


Thank you very much