Query about jsp2.0 and jstl1.2

Question

Hello all,
I am Raja Sekhar, I have one appliation running on weblogic9.2 and now migrated to 10.3. In earlier version we used struts-el tags and jstl1.1, in some of our jsps we have code like this :
*<html-el:submit property="test" value="Configure" tabindex="1" disabled="${isReadOnly}" />*
But when we migrate , I was getting error at ${isReadOnly}, stating, setDisable(boolean) is not applicable for string values.
After some research , I changed the c.tld file version from 1.1 to 1.2 and removed "$" symbol from the tag, as follows:
*<html-el:submit property="test" value="Configure" tabindex="1" disabled="{isReadOnly}" />*
Now its working fine. But just wanted to know the reason for this.
Can some one please help me in this.
thanks in advance
Raja Sekhar chintapalli

Answer 1

Is it really working fine? really? Does it come up disabled when it is meant to be? Where is the value "isReadOnly" meant to come from?
The struts-el libraries are only intended for use in JSP1.2 applications where EL is not understood implicitly by the container.
It let you use EL expressions with the struts tags.
With the advent of JSP2.0 they became irrelevant as the container interpreted ${expr} the same as <%= expr %> and so you could use the standard struts tags.
My advice
Use JSTL1.1, JSP2.0 and the standard struts tags - not struts-el.
Make sure your web.xml file is updated to 2.4 - not declaring a 2.3 DTD.
Cheers,
evnafets