Question

In my JSP I have a dropdownlist and a submit button when clicking the submit button I lose the value already selected in my list.
I am using the jstl because i need to construct other table corresponding the value selected in my list.For that I must call a submit button but the problem; it reset the value selected

I want to know if there is a way to save the value selected in my list even I click a submit button.
I work with JSP and eclipse environment.
Thank you for your help.

Answer 1

You need to preset the inputs with the request parameter values. You can access parameter values in EL by ${param.name}. In case of dropdowns rendered by HTML <select> element, you need to set the selected attribute of the HTML <option> element in question. You can make use of the ternary operator in EL to print the selected attribute whenever the option value matches the request parameter value.

Basic example:

<select name="foo">
   <c:forEach items="${options}" var="option">
       <option ${param.foo == option ? 'selected' : ''}>${option}</option>
   </c:forEach>
</select>