Solved

hidden fields in jsp

Posted on 2011-02-16
3
1,176 Views
Last Modified: 2012-05-11
<form method="post">

<select name ="getselected" id="getselected">
<option>fox</option>
<option>fox2</option>
<option>fox3</option>
</selected>

<input type="hidden" name="hidden" value="<%=getselected%>">

</form>




on server side

String selectedvalue = (String)request.getParameter("hidden");



when i use hidden field in jsp it showed me an error

Multiple annotations found at this line:
      - Tag (input) should be an empty-
       element tag.
      - getselected cannot be resolved to a
       variable
0
Comment
Question by:shragi
  • 2
3 Comments
 
LVL 20

Expert Comment

by:Sathish David Kumar N
ID: 34908700
while loading the page <%=getselected%> is null so that only its give error more over you cant get that value directly .

try this

String selectedvalue = (String)request.getParameter("getselected");
0
 
LVL 27

Accepted Solution

by:
rrz earned 250 total points
ID: 34909433
I have been reading your other questions. This a javascript question.  
If your hidden field in your form is
<input type="hidden" name="fileLocation" value="not yet">
and you have
 <select name="selectedFile" >
...
</select>
and you have
<input class="button" value="Submit" type="button" onclick="performAction2()" />
then your script will be  
<script language="JavaScript" type="text/javascript">
   function performAction2() {
       document.forms[0].fileLocation.value = 
              document.forms[0].selectedFile.options[document.forms[0].selectedFile.selectedIndex].value;
       document.forms[0].submit();
   }
</script>

Open in new window

0
 
LVL 20

Assisted Solution

by:Sathish David Kumar N
Sathish David  Kumar N earned 250 total points
ID: 34913592
if u want to set the values dynamically then u can use JSTL tag

Before loading the page jsut set the hiddenValue as blank

request.setAttribute("hiddenValue","");
In jsp
<input type="hidden" name="hiddenV" value="${hiddenValue}">
while changing the dropdown call some java script
set the value in java script function
document.forms[0].hiddenV.value=document.forms[0].getselected.value
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
table example 4 32
Windows 10 IE Certificate Issue 10 51
type mismatch (Object[] to double[] 4 33
hashmap order 17 36
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.

839 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question