java - How to re-populate form fields on a jsp page after failed server validation -

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i have simple java mvc web application , using servlet handle form validation. if form validated, request forwarded appropriate view. however, if form fails validation, request forwarded form, displays appropriate error message(s).

my question -- efficient way re-populate of form fields data entered in form user?

i not using mvc framework, simple httpservlets controller .jsp view.

the easiest , least effort use

<input name="foo" type="text" value="${param.foo}"/>

this should default "" when user first visits form.

a little more can done create custom tag binds request. not solution looking for.

edit: may want use <c:out value="${param.foo}"/> protect against xss attack.


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