https://issues.apache.org/bugzilla/show_bug.cgi?id=55198
Bug ID: 55198
Summary: Quote entity in html element attribute evaluated in
tagx if attribute contains EL expression
Product: Tomcat 7
Version: 7.0.41
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Servlet & JSP API
Assignee: dev@tomcat.apache.org
Reporter: evan.greensm...@exari.com
Created attachment 30535
--> https://issues.apache.org/bugzilla/attachment.cgi?id=30535&action=edit
War demonstrating the issue
Quote entity in html element attribute evaluated in tagx if attribute contains
EL expression
If your tagx file contains an html element such as
<a href="#" onclick="window.alert("Hello World!")">foobar</a>
It renders as
<a href="#" onclick="window.alert("Hello World!")">foobar</a>
If your tagx file contains an html element such as
<a href="#" onclick="window.alert("${text}!")">foobar</a>
It renders as (if text='foobar')
<a href="#" onclick="window.alert("foobar")">foobar</a>
Most browsers aren't too happy with this.
I would have expected this to render as
<a href="#" onclick="window.alert("foobar")">foobar</a>
I browsed through jsp 2.1 spec and couldn't identify anything that explicitly
covered this, but I would expect valid xml output from a tagx file.
You don't see this behaviour if you use a tag file. We need to use tagx files
to work around various problems in WebSphere and WebLogic containers.
A test war is attached. It is setup for servlet spec 2.5 and jsp 2.1 --- I am
actually using a Tomcat 6 container, but thought I'd test this on the latest
release.
The output I receive from the test war on tomcat 7.0.41:
<!DOCTYPE html>
<html>
<head>
<title>Test the output of tag and tagx containing quote entity in html
element attribute</title>
</head>
<body>
<p>.tag file gives:</p>
<ul>
<li><a href="#" onclick="window.alert("Hello World!")">Click me
to display "Hello World!"</a></li>
<li><a href="#" onclick="window.alert("foobar")">Click me to
display "foobar"</a></li>
</ul>
<p>.tagx file gives:</p>
<ul><li><a onclick="window.alert("Hello World!")"
href="#">Click me to display "Hello World!"</a></li><li><a
onclick="window.alert("foobar")" href="#">Click me to display
"foobar"</a></li></ul>
</body>
</html>
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