Re: Struts-EL problem with struts-el-1.3.0-dev
On 7/28/05, Marco Mistroni <[EMAIL PROTECTED]> wrote:
>
> Hello Wendy,
> I missed one point of your statement..
>
> >>
>
> >Even if you're going to use an expression, the 'name' attribute should
> >still
> >evaluate to the _name_ of the bean, not the bean itself.
> > http://struts.apache.org/userGuide/struts-logic.html#present
>
> what do you mean? If I store the bean under the attribute name 'result',
> why
> the above EL is wrong?
What you want is:
This will check for a bean stored under the name 'results' in session scope.
${sessionScope.results} evaluates to the bean itself. The logic tag
receives *that bean* where before it received a String. I believe
that the logic tag would then convert that bean to a String and look
for an object stored under that name, instead.
Instead of dealing with all of this, just try the following JSTL:
-- Jeff
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RE: Struts-EL problem with struts-el-1.3.0-dev
Hello Wendy,
I missed one point of your statement..
>>
>Even if you're going to use an expression, the 'name' attribute should
>still
>evaluate to the _name_ of the bean, not the bean itself.
> http://struts.apache.org/userGuide/struts-logic.html#present
what do you mean? If I store the bean under the attribute name 'result',
why
the above EL is wrong?
>Then the tag would be:
> <%@ taglib uri="http://struts.apache.org/tags-logic-el";
prefix="logic"%>
>
>No EL required for that one. But do use the JSTL tags instead whenever
>possible. :)
I use EL to replace
where Constants.RESULT has value 'results'
Where does the above declaration differ from the EL?
What does ${sessionScope.result} represent in this case?
can you show me a quick sample on a simple use of EL ?
if I store objects in session/request/applicationScope, why can't I use
struts-el with EL to retrieve them?
Thanx in advance for your time and regards
Marco mistroni
[BTW, in a Servlet 2.3 container, you do not need all those
tags in
web.xml. If you use the correct URI, the tlds will be located in the
.jar
files in WEB-INF/lib.]
--
Wendy Smoak
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Re: Struts-EL problem with struts-el-1.3.0-dev
From: "Marco Mistroni" <[EMAIL PROTECTED]> Yes I actually reverted to using c:if, and it worked Just fine I wanted just to report the situation to see if I was Using the taglib incorrectly... Even if you're going to use an expression, the 'name' attribute should still evaluate to the _name_ of the bean, not the bean itself. http://struts.apache.org/userGuide/struts-logic.html#present If this works: // this displays the loop data Then the tag would be: <%@ taglib uri="http://struts.apache.org/tags-logic-el"; prefix="logic" %> No EL required for that one. But do use the JSTL tags instead whenever possible. :) [BTW, in a Servlet 2.3 container, you do not need all those tags in web.xml. If you use the correct URI, the tlds will be located in the .jar files in WEB-INF/lib.] -- Wendy Smoak - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts-EL problem with struts-el-1.3.0-dev
Hello Joe,
Yes I actually reverted to using c:if, and it worked
Just fine
I wanted just to report the situation to see if I was
Using the taglib incorrectly...
Thanx again and regards
marco
-Original Message-
From: Joe Germuska [mailto:[EMAIL PROTECTED]
Sent: 28 July 2005 12:15
To: Marco Mistroni; 'Struts Users Mailing List'
Subject: Re: Struts-EL problem with struts-el-1.3.0-dev
At 11:08 AM +0100 7/28/05, Marco Mistroni wrote:
>anyone could give me some hints on what's wrong?
>Do you think the fact that I have both struts-taglib and struts-el in
>my
>Lib directory could cause problems?
No, because el actually depends on taglib -- you have to have taglib to
use el.
If you're also using JSTL, I would always advise using
whereever it works -- not that this shouldn't be fixed if it turns
out to be a bug.
Joe
>Hello all,
>I have an app which is using struts 1.3.. I wanted to 'replace'
>existing struts tag with struts-el tag.
>So I downloaded struts-el-1.3.0-dev and put it into my jar, (along with
>struts-taglib-1.3.0-dev)
>
>I have declared taglibs in web.xml, and I wrote a simple page which
uses
>Struts-el inside a logic:tag
>
>And, to my surprise, it did't work
>Basically I have an attribute of type collection in my HttpSession, and
>I was trying to access it from the page using
>
>
>
>
>for doublechecking, I wrote a scriptlet code that was trying to get the
>'results' attribute from the session, to see that if it was actually
>there..
>and it was there
>
>Even the c:forEAch loop that uses JSTL to get that attribute works
>fine..
>
>for providing as much info as I can, here is my web.xml
>
>** WEB.XML (TAGLIBS ONLY) *
>
>
> /WEB-INF/struts-bean.tld
> /WEB-INF/struts-bean.tld
>
>
>
> /WEB-INF/struts-html.tld
> /WEB-INF/struts-html.tld
>
>
>
> /WEB-INF/struts-logic.tld
> /WEB-INF/struts-logic.tld
>
>
>
> /WEB-INF/struts-nested.tld
> /WEB-INF/struts-nested.tld
>
>
>
> /WEB-INF/struts-tiles.tld
> /WEB-INF/struts-tiles.tld
>
>
>
>
> /WEB-INF/struts-bean-el.tld
> /WEB-INF/struts-bean-el.tld
>
>
>
> /WEB-INF/struts-html-el.tld
> /WEB-INF/struts-html-el.tld
>
>
>
> /WEB-INF/struts-logic-el.tld
> /WEB-INF/struts-logic-el.tld
>
>
>
> /WEB-INF/struts-tiles-el.tld
> /WEB-INF/struts-tiles-el.tld
>
>***
>
>and here is my JSP (only relevant part)***
>
><%@ taglib prefix='c' uri='http://java.sun.com/jstl/core' %>
><%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt"; %>
><%@ taglib uri="/WEB-INF/struts-html-el.tld" prefix="html" %>
><%@ taglib uri="/WEB-INF/struts-bean-el.tld" prefix="bean" %>
><%@ taglib uri="/WEB-INF/struts-logic-el.tld" prefix="logic"%>
>
><% if(session.getAttribute("results") != null) {
> java.util.Collection coll =
>(java.util.Collection)session.getAttribute("RESULTS");
> System.out.println(" in session there are " + coll.size() +
>" elements!!!"); // this print successfully
> }
>%>
>
>
>
> name="${sessionScope.results}">hellovalue="${statusMsg}"/>
>
>
>
>
>
> // this displays the loop data
>
>
>***
>
>
>other than that, in my \lib directory I have both
>struts-taglib-1.3.0-dev and struts-el-1.3.0-dev,
>and I am running my code on Jboss 3.2.5
>
>
>Thanks in advance and regards
> marco
>
>
>
>
>
>
>
>-
>To unsubscribe, e-mail: [EMAIL PROTECTED]
>For additional commands, e-mail: [EMAIL PROTECTED]
--
Joe Germuska
[EMAIL PROTECTED]
http://blog.germuska.com
"Narrow minds are weapons made for mass destruction" -The Ex
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Re: Struts-EL problem with struts-el-1.3.0-dev
At 11:08 AM +0100 7/28/05, Marco Mistroni wrote:
anyone could give me some hints on what's wrong?
Do you think the fact that I have both struts-taglib and struts-el in
my
Lib directory could cause problems?
No, because el actually depends on taglib -- you have to have taglib to use el.
If you're also using JSTL, I would always advise using
whereever it works -- not that this shouldn't be fixed if it turns
out to be a bug.
Joe
Hello all,
I have an app which is using struts 1.3.. I wanted to 'replace'
existing struts tag with struts-el tag.
So I downloaded struts-el-1.3.0-dev and put it into my jar, (along with
struts-taglib-1.3.0-dev)
I have declared taglibs in web.xml, and I wrote a simple page which uses
Struts-el inside a logic:tag
And, to my surprise, it did't work
Basically I have an attribute of type collection in my HttpSession, and
I was trying to access it from the page using
for doublechecking, I wrote a scriptlet code that was trying to get the
'results' attribute from the session, to see that if it was actually
there..
and it was there
Even the c:forEAch loop that uses JSTL to get that attribute works
fine..
for providing as much info as I can, here is my web.xml
** WEB.XML (TAGLIBS ONLY) *
/WEB-INF/struts-bean.tld
/WEB-INF/struts-bean.tld
/WEB-INF/struts-html.tld
/WEB-INF/struts-html.tld
/WEB-INF/struts-logic.tld
/WEB-INF/struts-logic.tld
/WEB-INF/struts-nested.tld
/WEB-INF/struts-nested.tld
/WEB-INF/struts-tiles.tld
/WEB-INF/struts-tiles.tld
/WEB-INF/struts-bean-el.tld
/WEB-INF/struts-bean-el.tld
/WEB-INF/struts-html-el.tld
/WEB-INF/struts-html-el.tld
/WEB-INF/struts-logic-el.tld
/WEB-INF/struts-logic-el.tld
/WEB-INF/struts-tiles-el.tld
/WEB-INF/struts-tiles-el.tld
***
and here is my JSP (only relevant part)***
<%@ taglib prefix='c' uri='http://java.sun.com/jstl/core' %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt"; %>
<%@ taglib uri="/WEB-INF/struts-html-el.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean-el.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic-el.tld" prefix="logic"%>
<% if(session.getAttribute("results") != null) {
java.util.Collection coll =
(java.util.Collection)session.getAttribute("RESULTS");
System.out.println(" in session there are " + coll.size() +
" elements!!!"); // this print successfully
}
%>
hello
// this displays the loop data
***
other than that, in my \lib directory I have both
struts-taglib-1.3.0-dev and struts-el-1.3.0-dev,
and I am running my code on Jboss 3.2.5
Thanks in advance and regards
marco
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
Joe Germuska
[EMAIL PROTECTED]
http://blog.germuska.com
"Narrow minds are weapons made for mass destruction" -The Ex
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Struts-EL problem with struts-el-1.3.0-dev
Hello all,
I have an app which is using struts 1.3.. I wanted to 'replace'
existing struts tag with struts-el tag.
So I downloaded struts-el-1.3.0-dev and put it into my jar, (along with
struts-taglib-1.3.0-dev)
I have declared taglibs in web.xml, and I wrote a simple page which uses
Struts-el inside a logic:tag
And, to my surprise, it did't work
Basically I have an attribute of type collection in my HttpSession, and
I was trying to access it from the page using
for doublechecking, I wrote a scriptlet code that was trying to get the
'results' attribute from the session, to see that if it was actually
there..
and it was there
Even the c:forEAch loop that uses JSTL to get that attribute works
fine..
for providing as much info as I can, here is my web.xml
** WEB.XML (TAGLIBS ONLY) *
/WEB-INF/struts-bean.tld
/WEB-INF/struts-bean.tld
/WEB-INF/struts-html.tld
/WEB-INF/struts-html.tld
/WEB-INF/struts-logic.tld
/WEB-INF/struts-logic.tld
/WEB-INF/struts-nested.tld
/WEB-INF/struts-nested.tld
/WEB-INF/struts-tiles.tld
/WEB-INF/struts-tiles.tld
/WEB-INF/struts-bean-el.tld
/WEB-INF/struts-bean-el.tld
/WEB-INF/struts-html-el.tld
/WEB-INF/struts-html-el.tld
/WEB-INF/struts-logic-el.tld
/WEB-INF/struts-logic-el.tld
/WEB-INF/struts-tiles-el.tld
/WEB-INF/struts-tiles-el.tld
***
and here is my JSP (only relevant part)***
<%@ taglib prefix='c' uri='http://java.sun.com/jstl/core' %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt"; %>
<%@ taglib uri="/WEB-INF/struts-html-el.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean-el.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic-el.tld" prefix="logic"%>
<% if(session.getAttribute("results") != null) {
java.util.Collection coll =
(java.util.Collection)session.getAttribute("RESULTS");
System.out.println(" in session there are " + coll.size() +
" elements!!!"); // this print successfully
}
%>
hello
// this displays the loop data
***
other than that, in my \lib directory I have both
struts-taglib-1.3.0-dev and struts-el-1.3.0-dev,
and I am running my code on Jboss 3.2.5
anyone could give me some hints on what's wrong?
Do you think the fact that I have both struts-taglib and struts-el in
my
Lib directory could cause problems?
Thanks in advance and regards
marco
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
