JSTL c:if statements 2007-01-12 - By rotvang
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I have Tomcat version 5.0.28, and I am trying to use the JSTL tags in my
webapp. I have placed the 2 required JSTL jar files, "standard.jar" and
"jstl.jar" into my WEB-INF/lib directory.
The bizarre thing is that some of the JSTL standard tags work, and some
don't! Even stranger, it doesn't break down by taglib--in other words, half
of the "core" tags work, and half don't. Half of the "fmt" tags work, and
half don't.
Most importantly, <c:out > works just fine, and with the EL, properly.
However, none of the selection or conditional tags work: <c:if , <c:when,
and <c:choose tags all throw weird, indecypherable Jasper exceptions at JSP
compilation time.
Why would only some of the <c: tags throw exceptions, and not all of the <c:
tags.
Now, to rule out the possibility of syntax errors in my source, I
copy/pasted a complete JSP example from Sun's own website, which ostensibly
should work. Even with Sun Microsystem's own JSPs, these conditional <c:
tags throw the weird Jasper exception. I've pasted an excerpt of the stack
trace thrown by any occurrence of <c:if .... in any of my JSPages:
Jan 12, 2007 12:30:04 AM org.apache.jasper.compiler.Compiler  generateClass
SEVERE: Error compiling file: /C:/Documents and Settings/HR
Systems/Desktop/jaka
rta-tomcat-5 (See http://cat-5.ora-code.com).0.28/jakarta-tomcat-5 (See http://cat-5.ora-code.com).0.28/work/Catalina/localhost/OVWebApp//org/ap
ache/jsp\Example1_jsp.java [javac] Compiling 1 source file
C:\Documents and Settings\HR
Systems\Desktop\jakarta-tomcat-5 (See http://cat-5.ora-code.com).0.28\jakarta-tomca
t-5.0.28\work\Catalina\localhost\OVWebApp\org\apache\jsp\Example1_jsp.java:152:
_jspx_meth_c_out_1(javax.servlet.jsp.tagext.JspTag ,javax.servlet.jsp.PageContext
) in org.apache.jsp.Example1_jsp cannot be applied to
(org.apache.taglibs.standa
rd.tag.el.core.IfTag,javax.servlet.jsp.PageContext )
if (_jspx_meth_c_out_1(_jspx_th_c_if_0, _jspx_page_context))
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