JSP Tag Library and Scriptlets Question (Sort of)

[tommyc7]

I have just read this article and am working on a web project using it:

http://www.javaworld.com/jw-09-2000/jw-0915-jspweb.html

There's only one thing that either I'm missing or it doesn't say that I need to do.

If I set up a template tag, how can I use the content data in a scriptlet?

For example, say this is test.jsp:

<%@ taglib uri='/WEB-INF/template/template.tld' prefix='template' %>

<template:insert template='/template.jsp'>
  <template:put name='test' content='500' direct='true'/>
</template:insert>

If know I can do this in template.jsp:

<h1>Test = <template:get name='test'/></h1>

To display:

Test = 500


However, what I need to do is something like the following (and I know I have the types wrong, this is just psuedo-code):

<%
int i = <template:get name='test'/> * 2;
%>
<h1>Test * 2 = <%= i ></h1>

The compiler won't now how to handle that, though, right? Is there another way to do that?


Thanks,
Tom

 

[tommyc7]

I figured it out... At least one way... You need to do this:

<%
Stack stack = (Stack)pageContext.getAttribute("template-stack", PageContext.REQUEST_SCOPE);

if(stack == null)
{
	throw new JspException("test.jsp: NO STACK");
}

Hashtable params = (Hashtable)stack.peek();

if(params == null)
{
	throw new JspException("test.jsp: NO HASHTABLE");
}

int test = 0;

PageParameter testParam =  (PageParameter)params.get("test");

if(testParam == null ||!testParam.isDirect())
{
	test = 0;
}
else
{
	test= Integer.parseInt(testParam.getContent());
}

%>

<h1>Test * 2 = <%= test %></h1>