Forms + jsp quick question

Question

hi.
i have a question regarding forms in jsp...
i have a page on which a productid is passed to.
when the page is opened, it displays the details of a product which the user has selected from previous pages (e.g. bids.jsp?productid=5)
this page displays a form on which the user enters their userid and an amount to bid.
<form method = "post" action ="bids.jsp?<%=productid %>+<%=userid %>+<%= amount %>">
<p>User ID: <input type = "text" name = "userid" size = "5" value = ''></p>
<p>Bid Amount: ?<input type = text" name = "amount" size = "4" value = ''></p>
<p><input type = "submit" value = "Place Your Bid"></p>
</FORM>
now, when i click submit - it gives null for the userid and the amount (i.e. it doesn't seem to take them from the form). i tried .getSession, .getAttribute, .getParameter.... so i am obviously going wrong somewhere.
i also want to execute a query (an insert query), when submit is pressed.
it will be like this:
insert into bids values ('<%=userid %>', '<%= productid %>' ...... etc)
but obviously this won't work until i can TAKE that information from my form.
any suggestions?
thanks a million.

Answer 1

i guess the best u can do is,
Once u ran ur query and display, put the values in the hidden tag.
like this,
<input type="hidden" name="p_id" value="<%= product_id %>, do that for user and the amount thru all the > jsps u'd navigate.
so in each of ur jsp file, u can get the values using request.getParameter();
<%-- Execute query to display the chosen product --%>
<%
sql = ("select productid,................................ from product where productid = '"+ product_id +"'");
rs = stmt.executeQuery(sql);
%>u code works fine till this part right?
HTML table goes here
So, the table is displayed on the page. Below the table I want my form.
A form goes here (my form, your form, another form ??).
The form has a PLACE BID button.
Then I want to grab the data from that form, and execute a query based upon the data taken from the form when the PALCE BID button is pressed.So here u'll be displaying the table with the details of the product. since ur query criterion is a product_id, u'll get only a single row of info. So in the jsp page where u display these tables, have hidden tags inside ur form as I said.