https://issues.apache.org/bugzilla/show_bug.cgi?id=49799
Summary: The new JSP 2.2 omit-attribute in jsp:attribute does
not work with EL or expressions
Product: Tomcat 7
Version: 7.0.2
Platform: PC
OS/Version: Windows Vista
Status: NEW
Severity: normal
Priority: P2
Component: Jasper
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=25926)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=25926)
A JSP file which show three different use cases of the jsp:attribute omit
attribute
I'm trying to make use of the new omit-attribute in the jsp:attribute. This new
feature of JSP 2.2 is described in the Specs in JSP.5.10.
Table JSP.5-7 Attributes for the <jsp:attribute> standard action
omit (optional) Valid values are true and false. If true, and when
used with <jsp:element>, the attribute in the element being
ouput is omitted. Ignored when used with a standard or
custom action. Defaults to false.
There is an introduction text here:
http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14471459
and I'm trying to make this work in my setup but I'm failing. Or I don't get
the point.
The following works:
<jsp:element name="p">
<jsp:attribute name="style" omit="true" >color:red</jsp:attribute>
The following does NOT work:
<jsp:element name="p">
<jsp:attribute name="style" omit="<%=jspExpressionTrue%>"
>color:red</jsp:attribute>
The following does NOT work either:
<jsp:element name="p">
<jsp:attribute name="style" omit="${trueEL}" >color:red</jsp:attribute>
Full JSP code in my attachment. I actually use the JSP-document (XML /
JSPX-)syntax, but it does not work in any of the JSP dialects.
So I don't get the point why I should not be able to use EL in the
omit-attribute, because then it's kind of useless.
I use
Windows Vista 64bit
JavaSE 1.6
Apache Tomcat 7.0.0 and Apche Tomcat 7.0.2beta
JSTL 1.1.2
All setup together in a typical "Dynamic Web Project" in Eclipse 3.6 Helios
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