Solved

hidden fields in jsp

Posted on 2011-02-16
3
1,166 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

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

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

Suggested Solutions

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …

929 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

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now