POST array of values to java servlet

Question

I want to place the following form:

<input type="hidden" name="MPK[]" value="x" class="MPK"/>
<input type="hidden" name="MPK[]" value="y" class="MPK"/>
<input type="hidden" name="MPK[]" value="z" class="MPK"/>
...

and POST it to servlet or JSP page. How to get values of these inputs in one array in servlet?

request.getParameterValues("MPK");

doesn't work even if i remove [] from names.

why are you using "input hidden" ? Please post the code of the <form> — thiago.lenz
– thiago.lenz, Commented Oct 23, 2012 at 13:43
how do you read the values in you Servlet/JSP? Are you trying with getParameter() or getParameterValues() ? — Satheesh Cheveri
– Satheesh Cheveri, Commented Oct 23, 2012 at 13:56

Satheesh Cheveri · Accepted Answer · 2012-10-23 13:59:38Z

6

You have to get the values from array by parsing it.

String[] mpk;

mpk= request.getParameterValues("mpk");
for(int i = 0; i < mpk.length; i++)
{
System.out.println(mpk[i]);
}

edited Oct 23, 2012 at 13:59

Satheesh Cheveri

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answered Oct 23, 2012 at 13:38

vikiiii

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1 Comment

Mitul Over a year ago

Hi i have posted the values but it give me error java.lang.NullPointerException

Vasyl Keretsman · Accepted Answer · 2012-10-23 13:38:24Z

1

Remove "[]" from you parameter name. e.g.

<input type="hidden" name="MPK" value="x" class="MPK"/>

answered Oct 23, 2012 at 13:38

Vasyl Keretsman

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