Get all parameters from JSP page

Question

I have n number of text fields named in the form \"Question.....\". How can I get all the parameters which starts with \"question\" from the JSP page to the Action?

Answer 1

The fastest way should be:

<%@ page import="java.util.Map" %>
Map parameters = request.getParameterMap();
for (Map.Entry entry : parameters.entrySet()) {
    if (entry.getKey().startsWith("question")) {
        String[] values = entry.getValue();
        // etc.

Note that you can't do:

for (Map.Entry entry : 
     request.getParameterMap().entrySet()) { // WRONG!

for reasons explained here.