ServletRequest.getParameterValues returns only first value

Question

I am assigning an integer converted into string value to a hidden input through a loop where s1 is the loop iterator.

<% int k=0; 
String s1 = null;
while(mar.next()){ 
k++;
s1 = Integer.toString(k);%>
<table>
<tr><td><b>User Name </b> </td> <td><%= mar.getString("UserName")  %></td></tr>
<tr><td><b>Type </b></td><td> <%= mar.getString("Type")  %></td></tr>
<tr><td><b>Complain </b></td> <td><%= mar.getString("Complaint")  %></td></tr>
<tr><td><b>Status </b> </td> <td><%= mar.getString("Status")  %></td></tr>
<tr><td><b>Date </b> </td> <td><%= mar.getString("Date") %></td></tr>
</table> 
<form action = "demo1.jsp" method = "post">
<% out.println(mar.getString("Id")); %>
<input type="radio"  name = "<%= mar.getString("Id") %>"value="pending"checked>Pending
<input type="radio"  name = "<%= mar.getString("Id") %>" value="done">Done
<input type="submit" name = "B" id = "submit" >
<input type = "hidden" name = "try" value = <%= s1 %> >
<% out.println(s1); %>
</form>

<br>
<br>
<%
 }

Below is the code which should return a string of values from 1 to 3 (values of s1)

String[] vals;
vals = new String[3];
out.println(vals.length);
vals = request.getParameterValues("try");

out.println(vals.length);

for(int i=0; i<vals.length; i++){
    out.println("Hy");
    out.println(vals[i]);
}

It is only returning one value which is the first one and printing vals.length prints 1.

Where/how do you pass in more than one value for `try`? You have three separate forms as written. — Dave Newton, Jun 02 '15 at 17:40
There is only one hidden input per one form. An each time I think your first form is getting submitted. So you are getting first value in java code — Amit.rk3, Jun 02 '15 at 17:40
Through javascript/ Jquery. There are lots of answers to submit form from jquery. Just search it — Amit.rk3, Jun 02 '15 at 17:45
You shouldn't be creating three forms at *all* if you want to submit a single form with multiple values. *Why* are you creating three forms? On purpose? — Dave Newton, Jun 02 '15 at 18:01

score 1 · Answer 1 · edited May 23 '17 at 12:14

1

You are creating three forms. For each form there will be separate request made. Since each form contains only one hidden input you will always get only one value for each request for below code

 request.getParameterValues("try");

Now if you have to submit all the forms with one click. here or here are the answers

edited May 23 '17 at 12:14

Community

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answered Jun 02 '15 at 17:50

Amit.rk3

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ServletRequest.getParameterValues returns only first value

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