Date: Fri, 30 May 2003 13:47:01 -0400
From: Tim Funk [EMAIL PROTECTED]
Subject: [5] EL parsing eats extra character after '?'
To: Tomcat Developers List [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Attached below is a message from tomcat-user. I don't know it this is a valid
issue or not. If its not, it has great FAQ potential.
Argh, this is a bug! JSP 2.0 now recognizes ${...} as an EL expression,
so there are some special handling for $ in the parser. It got this
wrong, apparently.
I'll commit a fix to this as soon as I send this mail out. Note that
the workaound to this problem is to write
\$jsp:getProperty name=login property=username/
instead. Here, \$ is an escape for $. This is new in JSP 2.0.
Note also that this can now be written as
\$${login.username}
taking advantage of EL in tc 5.
If it is a problem, could it be caused by the following the snippet below? It
looks like any custom tag would be ignored if preceded by a $. This seems to
be the behavior I saw when I put $ in front of the hello world tag in
/jsp-examples/jsp2/tagfiles/hello.jsp.
In org.apache.jasper.compiler.Parser.parseXMLTemplateText()
lines 1502, 1506
if (ch != '{') {
ttext.write('$');
ttext.write(ch);
continue;
}
This would not work, since parseXMLTemplateText deals only with
text in the body of jsp:text element.
I really don't know much about Jasper, and was just snooping.
Well, this is a good time to do that, now that Jasper in TC5 has
stablized. Ping me if you need help. :)
-Kin-man
-Tim
Original Message
Subject: Tomcat 5.0.2 Bug
Date: Fri, 30 May 2003 06:36:04 -0700 (PDT)
From: Ed Smith [EMAIL PROTECTED]
Reply-To: Tomcat Users List [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
I think there is a bug in Tomcat 5.0.2 (at least under
Windows XP) dealing with placing a $ before (at least
some) tags.
Consider the following JSP:
jsp:useBean id=login class=LoginBean
scope=session/
jsp:setProperty name=login property=username
value=foo/
html
body
$jsp:getProperty name=login
property=username/
/body
/html
In Tomcat 4.1.24, this generates the following HTML
(as expected)
html
body
$foo
/body
/html
In Tomcat 5.0.2, it generates
html
body
$jsp:getProperty name=login
property=username/
/body
/html
The jsp taglib does not get processed in
5.0.2. Note that if I add a space after the $, it
works in 5.0.2
Changing to
$ jsp:getProperty name=login property=username/
gets the following HTML
html
body
$ foo
/body
/html
Am I missing something? I didnt find the problem in
either the bugs database or the mailing list archives.
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