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Posted to taglibs-user@tomcat.apache.org by Thomas McDonald <to...@yahoo.com> on 2004/03/02 23:31:09 UTC
c:out tag silently fails
How come this tag is outputing nothing, i.e., it
doesn't render the value of 'i'. Is this an jstl
expression language bug?
I can't get an error to troubleshoot! Obviously the
tags are working, otherwise it wouldn't have looped,
right?
code:
<%@ taglib uri="http://java.sun.com/jstl/core"
prefix="c"%>
<html>
<body>
<br>time: <%=new java.util.Date() %>
<br>
<c:forEach var="i" begin="1" end="10" step="1">
<c:out value="${i}" />
<br />
</c:forEach>
</body>
</html>
output:
time: Tue Mar 02 17:11:53 EST 2004
${i}
${i}
${i}
${i}
${i}
${i}
${i}
${i}
${i}
${i}
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Re: c:out tag silently fails
Posted by Thomas McDonald <to...@yahoo.com>.
Thanks again Adam. You suggestion put me on the right
track after ~12 hours of wrong tracks.
--- Adam Hardy <ah...@cyberspaceroad.com>
wrote:
> OK, as I guessed, fortunately, you are on JSP 2.
> With TC5, you are using
> JSP 2 & Servlet 2.4.
>
> You can change the doctype declaration by cutting &
> pasting the new one in:
>
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <web-app xmlns="http://java.sun.com/xml/ns/j2ee"
>
>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>
> xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
> web-app_2_4.xsd"
> version="2.4">
>
> This uses an XML schema, rather than a DTD.
>
> The EL is only the code between the ${.....}
> brackets. The taglibs are
> executed regardless of the EL. So you need to employ
> that config
> attribute. :)
>
> Adam
>
> On 03/03/2004 04:21 PM Thomas McDonald wrote:
> > Adam, you may be on to something here. I read
> that EL
> > is automatically ignored in if the web.xml is
> version
> > 2.3 or lower. I believe I have version 2.3.
> because
> > of the following tag at the top of my web.xml:
> >
> > <!DOCTYPE web-app
> > PUBLIC "-//Sun Microsystems, Inc.//DTD Web
> > Application 2.3//EN"
> > "http://java.sun.com/dtd/web-app_2_3.dtd">
> >
> >
> > How do I get a 2.4 web.xml file?
> >
> >
> > --- Adam Hardy <ah...@cyberspaceroad.com>
> > wrote:
> >
> >>Thomas,
> >>use the default="" attribute to force it to output
> >>something on error or
> >>when the value is null.
> >>
> >>As for your output, the EL is obviously not being
> >>evaluated. Have you
> >>got the setting in your web.xml to affect this?
> >>Check out the JSP2.0
> >>spec from Sun. Section 3.3.2 - deactivating EL
> >>evaluation. Worth the
> >>read, definitely. It's <el-ignored>
> >>
> >>Adam
> >>
> >>On 03/02/2004 11:31 PM Thomas McDonald wrote:
> >>
> >>>How come this tag is outputing nothing, i.e., it
> >>>doesn't render the value of 'i'. Is this an jstl
> >>>expression language bug?
> >>>
> >>>I can't get an error to troubleshoot! Obviously
> >>
> >>the
> >>
> >>>tags are working, otherwise it wouldn't have
> >>
> >>looped,
> >>
> >>>right?
> >>>
> >>>
> >>>code:
> >>>
> >>><%@ taglib uri="http://java.sun.com/jstl/core"
> >>>prefix="c"%>
> >>><html>
> >>><body>
> >>><br>time: <%=new java.util.Date() %>
> >>><br>
> >>><c:forEach var="i" begin="1" end="10" step="1">
> >>> <c:out value="${i}" />
> >>> <br />
> >>></c:forEach>
> >>></body>
> >>></html>
> >>>
> >>>
> >>>
> >>>output:
> >>>
> >>>time: Tue Mar 02 17:11:53 EST 2004
> >>>${i}
> >>>${i}
> >>>${i}
> >>>${i}
> >>>${i}
> >>>${i}
> >>>${i}
> >>>${i}
> >>>${i}
> >>>${i}
> >>>
> >>>
> >>>__________________________________
> >>>Do you Yahoo!?
> >>>Yahoo! Search - Find what you�re looking for
> >>
> >>faster
> >>
> >>>http://search.yahoo.com
> >>>
> >>>
> >>
> >
>
---------------------------------------------------------------------
> >
> >>>To unsubscribe, e-mail:
> >>
> >>taglibs-user-unsubscribe@jakarta.apache.org
> >>
> >>>For additional commands, e-mail:
> >>
> >>taglibs-user-help@jakarta.apache.org
> >>
> >>>
> >>
> >>--
> >>struts 1.1 + tomcat 5.0.16 + java 1.4.2
> >>Linux 2.4.20 Debian
> >>
> >>
> >>
> >
> >
>
---------------------------------------------------------------------
> >
> >>To unsubscribe, e-mail:
> >>taglibs-user-unsubscribe@jakarta.apache.org
> >>For additional commands, e-mail:
> >>taglibs-user-help@jakarta.apache.org
> >>
> >
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Search - Find what you�re looking for
> faster
> > http://search.yahoo.com
> >
> >
>
---------------------------------------------------------------------
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> taglibs-user-help@jakarta.apache.org
> >
> >
>
>
> --
> struts 1.1 + tomcat 5.0.16 + java 1.4.2
> Linux 2.4.20 Debian
>
>
>
---------------------------------------------------------------------
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Re: c:out tag silently fails
Posted by Adam Hardy <ah...@cyberspaceroad.com>.
OK, as I guessed, fortunately, you are on JSP 2. With TC5, you are using
JSP 2 & Servlet 2.4.
You can change the doctype declaration by cutting & pasting the new one in:
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee web-app_2_4.xsd"
version="2.4">
This uses an XML schema, rather than a DTD.
The EL is only the code between the ${.....} brackets. The taglibs are
executed regardless of the EL. So you need to employ that config
attribute. :)
Adam
On 03/03/2004 04:21 PM Thomas McDonald wrote:
> Adam, you may be on to something here. I read that EL
> is automatically ignored in if the web.xml is version
> 2.3 or lower. I believe I have version 2.3. because
> of the following tag at the top of my web.xml:
>
> <!DOCTYPE web-app
> PUBLIC "-//Sun Microsystems, Inc.//DTD Web
> Application 2.3//EN"
> "http://java.sun.com/dtd/web-app_2_3.dtd">
>
>
> How do I get a 2.4 web.xml file?
>
>
> --- Adam Hardy <ah...@cyberspaceroad.com>
> wrote:
>
>>Thomas,
>>use the default="" attribute to force it to output
>>something on error or
>>when the value is null.
>>
>>As for your output, the EL is obviously not being
>>evaluated. Have you
>>got the setting in your web.xml to affect this?
>>Check out the JSP2.0
>>spec from Sun. Section 3.3.2 - deactivating EL
>>evaluation. Worth the
>>read, definitely. It's <el-ignored>
>>
>>Adam
>>
>>On 03/02/2004 11:31 PM Thomas McDonald wrote:
>>
>>>How come this tag is outputing nothing, i.e., it
>>>doesn't render the value of 'i'. Is this an jstl
>>>expression language bug?
>>>
>>>I can't get an error to troubleshoot! Obviously
>>
>>the
>>
>>>tags are working, otherwise it wouldn't have
>>
>>looped,
>>
>>>right?
>>>
>>>
>>>code:
>>>
>>><%@ taglib uri="http://java.sun.com/jstl/core"
>>>prefix="c"%>
>>><html>
>>><body>
>>><br>time: <%=new java.util.Date() %>
>>><br>
>>><c:forEach var="i" begin="1" end="10" step="1">
>>> <c:out value="${i}" />
>>> <br />
>>></c:forEach>
>>></body>
>>></html>
>>>
>>>
>>>
>>>output:
>>>
>>>time: Tue Mar 02 17:11:53 EST 2004
>>>${i}
>>>${i}
>>>${i}
>>>${i}
>>>${i}
>>>${i}
>>>${i}
>>>${i}
>>>${i}
>>>${i}
>>>
>>>
>>>__________________________________
>>>Do you Yahoo!?
>>>Yahoo! Search - Find what you’re looking for
>>
>>faster
>>
>>>http://search.yahoo.com
>>>
>>>
>>
> ---------------------------------------------------------------------
>
>>>To unsubscribe, e-mail:
>>
>>taglibs-user-unsubscribe@jakarta.apache.org
>>
>>>For additional commands, e-mail:
>>
>>taglibs-user-help@jakarta.apache.org
>>
>>>
>>
>>--
>>struts 1.1 + tomcat 5.0.16 + java 1.4.2
>>Linux 2.4.20 Debian
>>
>>
>>
>
> ---------------------------------------------------------------------
>
>>To unsubscribe, e-mail:
>>taglibs-user-unsubscribe@jakarta.apache.org
>>For additional commands, e-mail:
>>taglibs-user-help@jakarta.apache.org
>>
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Search - Find what you’re looking for faster
> http://search.yahoo.com
>
> ---------------------------------------------------------------------
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> For additional commands, e-mail: taglibs-user-help@jakarta.apache.org
>
>
--
struts 1.1 + tomcat 5.0.16 + java 1.4.2
Linux 2.4.20 Debian
---------------------------------------------------------------------
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Re: c:out tag silently fails
Posted by Thomas McDonald <to...@yahoo.com>.
Adam, you may be on to something here. I read that EL
is automatically ignored in if the web.xml is version
2.3 or lower. I believe I have version 2.3. because
of the following tag at the top of my web.xml:
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web
Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
How do I get a 2.4 web.xml file?
--- Adam Hardy <ah...@cyberspaceroad.com>
wrote:
> Thomas,
> use the default="" attribute to force it to output
> something on error or
> when the value is null.
>
> As for your output, the EL is obviously not being
> evaluated. Have you
> got the setting in your web.xml to affect this?
> Check out the JSP2.0
> spec from Sun. Section 3.3.2 - deactivating EL
> evaluation. Worth the
> read, definitely. It's <el-ignored>
>
> Adam
>
> On 03/02/2004 11:31 PM Thomas McDonald wrote:
> > How come this tag is outputing nothing, i.e., it
> > doesn't render the value of 'i'. Is this an jstl
> > expression language bug?
> >
> > I can't get an error to troubleshoot! Obviously
> the
> > tags are working, otherwise it wouldn't have
> looped,
> > right?
> >
> >
> > code:
> >
> > <%@ taglib uri="http://java.sun.com/jstl/core"
> > prefix="c"%>
> > <html>
> > <body>
> > <br>time: <%=new java.util.Date() %>
> > <br>
> > <c:forEach var="i" begin="1" end="10" step="1">
> > <c:out value="${i}" />
> > <br />
> > </c:forEach>
> > </body>
> > </html>
> >
> >
> >
> > output:
> >
> > time: Tue Mar 02 17:11:53 EST 2004
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Search - Find what you�re looking for
> faster
> > http://search.yahoo.com
> >
> >
>
---------------------------------------------------------------------
> > To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
> >
> >
>
>
> --
> struts 1.1 + tomcat 5.0.16 + java 1.4.2
> Linux 2.4.20 Debian
>
>
>
---------------------------------------------------------------------
> To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
>
__________________________________
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Yahoo! Search - Find what you�re looking for faster
http://search.yahoo.com
---------------------------------------------------------------------
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Re: c:out tag silently fails
Posted by Thomas McDonald <to...@yahoo.com>.
Adam,
Thanks, I'll check it out. However, it doesn't appear
that the el tags were ignored. The loop executed, but
the value of "${i}" wasn't rendered. Right?
--- Adam Hardy <ah...@cyberspaceroad.com>
wrote:
> Thomas,
> use the default="" attribute to force it to output
> something on error or
> when the value is null.
>
> As for your output, the EL is obviously not being
> evaluated. Have you
> got the setting in your web.xml to affect this?
> Check out the JSP2.0
> spec from Sun. Section 3.3.2 - deactivating EL
> evaluation. Worth the
> read, definitely. It's <el-ignored>
>
> Adam
>
> On 03/02/2004 11:31 PM Thomas McDonald wrote:
> > How come this tag is outputing nothing, i.e., it
> > doesn't render the value of 'i'. Is this an jstl
> > expression language bug?
> >
> > I can't get an error to troubleshoot! Obviously
> the
> > tags are working, otherwise it wouldn't have
> looped,
> > right?
> >
> >
> > code:
> >
> > <%@ taglib uri="http://java.sun.com/jstl/core"
> > prefix="c"%>
> > <html>
> > <body>
> > <br>time: <%=new java.util.Date() %>
> > <br>
> > <c:forEach var="i" begin="1" end="10" step="1">
> > <c:out value="${i}" />
> > <br />
> > </c:forEach>
> > </body>
> > </html>
> >
> >
> >
> > output:
> >
> > time: Tue Mar 02 17:11:53 EST 2004
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Search - Find what you�re looking for
> faster
> > http://search.yahoo.com
> >
> >
>
---------------------------------------------------------------------
> > To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
> >
> >
>
>
> --
> struts 1.1 + tomcat 5.0.16 + java 1.4.2
> Linux 2.4.20 Debian
>
>
>
---------------------------------------------------------------------
> To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
>
__________________________________
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Re: c:out tag silently fails
Posted by Thomas McDonald <to...@yahoo.com>.
Here are my system setup specs
JSTL 1.1
Tomcat 5.0.19
Java 1.4
--- Henri Yandell <ba...@generationjava.com> wrote:
>
> Just to check, does Thomas even want to use JSP 2.0?
>
> No one's asked if he's using a JSP 2.0 compliant
> server.
>
> Hen
>
> On Wed, 3 Mar 2004, Adam Hardy wrote:
>
> > Thomas,
> > use the default="" attribute to force it to output
> something on error or
> > when the value is null.
> >
> > As for your output, the EL is obviously not being
> evaluated. Have you
> > got the setting in your web.xml to affect this?
> Check out the JSP2.0
> > spec from Sun. Section 3.3.2 - deactivating EL
> evaluation. Worth the
> > read, definitely. It's <el-ignored>
> >
> > Adam
> >
> > On 03/02/2004 11:31 PM Thomas McDonald wrote:
> > > How come this tag is outputing nothing, i.e., it
> > > doesn't render the value of 'i'. Is this an
> jstl
> > > expression language bug?
> > >
> > > I can't get an error to troubleshoot! Obviously
> the
> > > tags are working, otherwise it wouldn't have
> looped,
> > > right?
> > >
> > >
> > > code:
> > >
> > > <%@ taglib uri="http://java.sun.com/jstl/core"
> > > prefix="c"%>
> > > <html>
> > > <body>
> > > <br>time: <%=new java.util.Date() %>
> > > <br>
> > > <c:forEach var="i" begin="1" end="10" step="1">
> > > <c:out value="${i}" />
> > > <br />
> > > </c:forEach>
> > > </body>
> > > </html>
> > >
> > >
> > >
> > > output:
> > >
> > > time: Tue Mar 02 17:11:53 EST 2004
> > > ${i}
> > > ${i}
> > > ${i}
> > > ${i}
> > > ${i}
> > > ${i}
> > > ${i}
> > > ${i}
> > > ${i}
> > > ${i}
> > >
> > >
> > > __________________________________
> > > Do you Yahoo!?
> > > Yahoo! Search - Find what you�re looking for
> faster
> > > http://search.yahoo.com
> > >
> > >
>
---------------------------------------------------------------------
> > > To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> > > For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
> > >
> > >
> >
> >
> > --
> > struts 1.1 + tomcat 5.0.16 + java 1.4.2
> > Linux 2.4.20 Debian
> >
> >
> >
>
---------------------------------------------------------------------
> > To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
> >
>
>
>
>
---------------------------------------------------------------------
> To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
>
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Re: c:out tag silently fails
Posted by Henri Yandell <ba...@generationjava.com>.
Just to check, does Thomas even want to use JSP 2.0?
No one's asked if he's using a JSP 2.0 compliant server.
Hen
On Wed, 3 Mar 2004, Adam Hardy wrote:
> Thomas,
> use the default="" attribute to force it to output something on error or
> when the value is null.
>
> As for your output, the EL is obviously not being evaluated. Have you
> got the setting in your web.xml to affect this? Check out the JSP2.0
> spec from Sun. Section 3.3.2 - deactivating EL evaluation. Worth the
> read, definitely. It's <el-ignored>
>
> Adam
>
> On 03/02/2004 11:31 PM Thomas McDonald wrote:
> > How come this tag is outputing nothing, i.e., it
> > doesn't render the value of 'i'. Is this an jstl
> > expression language bug?
> >
> > I can't get an error to troubleshoot! Obviously the
> > tags are working, otherwise it wouldn't have looped,
> > right?
> >
> >
> > code:
> >
> > <%@ taglib uri="http://java.sun.com/jstl/core"
> > prefix="c"%>
> > <html>
> > <body>
> > <br>time: <%=new java.util.Date() %>
> > <br>
> > <c:forEach var="i" begin="1" end="10" step="1">
> > <c:out value="${i}" />
> > <br />
> > </c:forEach>
> > </body>
> > </html>
> >
> >
> >
> > output:
> >
> > time: Tue Mar 02 17:11:53 EST 2004
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> > ${i}
> >
> >
> > __________________________________
> > Do you Yahoo!?
> > Yahoo! Search - Find what you�re looking for faster
> > http://search.yahoo.com
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: taglibs-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail: taglibs-user-help@jakarta.apache.org
> >
> >
>
>
> --
> struts 1.1 + tomcat 5.0.16 + java 1.4.2
> Linux 2.4.20 Debian
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: taglibs-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: taglibs-user-help@jakarta.apache.org
>
---------------------------------------------------------------------
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Re: c:out tag silently fails
Posted by Adam Hardy <ah...@cyberspaceroad.com>.
Thomas,
use the default="" attribute to force it to output something on error or
when the value is null.
As for your output, the EL is obviously not being evaluated. Have you
got the setting in your web.xml to affect this? Check out the JSP2.0
spec from Sun. Section 3.3.2 - deactivating EL evaluation. Worth the
read, definitely. It's <el-ignored>
Adam
On 03/02/2004 11:31 PM Thomas McDonald wrote:
> How come this tag is outputing nothing, i.e., it
> doesn't render the value of 'i'. Is this an jstl
> expression language bug?
>
> I can't get an error to troubleshoot! Obviously the
> tags are working, otherwise it wouldn't have looped,
> right?
>
>
> code:
>
> <%@ taglib uri="http://java.sun.com/jstl/core"
> prefix="c"%>
> <html>
> <body>
> <br>time: <%=new java.util.Date() %>
> <br>
> <c:forEach var="i" begin="1" end="10" step="1">
> <c:out value="${i}" />
> <br />
> </c:forEach>
> </body>
> </html>
>
>
>
> output:
>
> time: Tue Mar 02 17:11:53 EST 2004
> ${i}
> ${i}
> ${i}
> ${i}
> ${i}
> ${i}
> ${i}
> ${i}
> ${i}
> ${i}
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Search - Find what you’re looking for faster
> http://search.yahoo.com
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: taglibs-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: taglibs-user-help@jakarta.apache.org
>
>
--
struts 1.1 + tomcat 5.0.16 + java 1.4.2
Linux 2.4.20 Debian
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