JSP 2 Tag Files

[Chris Snapp]

So I'm attempting to use purely XML based JSP 2 tag files and I've bumped into a couple of problems. I'll toss a snippet of code to help with the explanation.

I'd like to dynamically generate an XHTML checkbox via a JSP tag that takes in parameters and determines whether to build the element with the "checked" or "disabled" attributes. I thought I could get away with throwing some <c:if> tags around the <jsp:attribute> tag but it fails with a nullPointerException. Anyone know how to choose what attributes are added to a <jsp:element> tag?

<tags:checkbox id="input1" checked="${isChecked}" disabled="${isDisabled}" />

I'd like to pass a bunch of parameters in the body of a tag, this was easy when I was making the JSP tags using class files but I'm not sure how to pull it off with JSP tag files. Any pointers to info on this would be swell.

<tags :p ageControls page="${page}">
<tags :p arameter name="pageName" value="tinkerbell" />
<tags :p arameter name="searchTerms" value="test1, test2, test3" />
</tags :p ageControls>

Any ideas on how I could place dynamic info inside of a CDATA tag on my JSP tag file would be greatly appreciated. Since the tag files are themselves XML documents, the dynamic pieces do not get rendered.

<script type="text/javascript">
//<![CDATA[
var testLoaded;
if(!testLoaded) {
<tags:includeJs src="/stuff/js/test.js" />
    testLoaded = true;
    }
//]]>
</script>

Any help on these problems would be greatly appreciated, hopefully I'm not pushing to much in one post.

- Thanks all
[ September 26, 2005: Message edited by: Chris Snapp ]

[Chris Snapp]

Huh, I'm an idiot.....a simple fix for the javascript problem would be to escape the CDATA tags.....a'lika so:

<script type="text/javascript">
//& lt;![CDATA[
var testLoaded;
if(!testLoaded) {
<tags:includeJs src="/stuff/js/test.js" />
    testLoaded = true;
        }
        //]]& gt;
</script>

[ September 26, 2005: Message edited by: Chris Snapp ]
[ September 26, 2005: Message edited by: Chris Snapp ]

[Bear Bibeault]

XML based JSP

May I ask why? This has come up a few times before. The XML syntax for JSP is meant to be used by the JSP containers as an intermediate format, or for machine-generated JSPs where it is useful to build up a DOM and serialize it, but it's certainly not meant as something humans should want to generate.