Where does "searchFirstName" get defined? If it is in your form when how
would c:url know what form or what field to use? Also, have you tried
having your action set "searchFirstName" with something like this
request.setParameter("searchFirstName", someStringVar) so c:url could see it
as ${searchFirstName} in the url it is generating? I guess I do not see how
it is supposed to know the field "searchFirstName" that the FORM that Struts
is using unless you give it the scope, bean name, and field name kind of
like: request.formdefname.searchFirstName. Remember, the html: and html-el:
tags already know their form name to implicitly use because it is pulled
from the action path. C:url isn't a struts tag so how would it know that
scope and form bean name to lookup to find the searchFirstName field? I
hope this makes sense.
Regards,
David
-----Original Message-----
From: Caroline Jen [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 19, 2006 1:40 PM
To: Struts Users Mailing List
Subject: RE: How to Pass a Textfield Value as a c:param to a Link using
c:url?
But, it does not work even I changed html-el to html.
In my link, I did pass some fixed values. They are
picked up. Let me explain:
<c:url value="/admin/sortUsers.do" var="ascFirstName">
<c:param name="sortKey" value="firstName" />
<c:param name="orderKey" value="ASC" />
<c:param name="searchFirstName"
value="${searchFirstName}" />
</c:url>
<A href=' <c:out value="${ascFirstName}" /> '></A>
The fixed values "firstName" and "ASC" are picked up
without problem. But the "${searchFirstName}" where
searchFirstName is the property of a text field is not
picked up.
--- David Friedman <[EMAIL PROTECTED]> wrote:
> Dear Caroline Jen,
>
> I thought people only used the "html-el" taglib
> because their JSP container
> didn't natively support EL? That would mean your
> c:url and c:param tags
> won't get the expressions ${searchFirstName} or
> ${ascFirstName} parsed
> because your JSP container doesn't do that. If your
> container did parse
> expression like that, you would be using the regular
> "html" taglib, right?
> If I am missing something please let me know. I
> just cannot remember ever
> hearing of any other reason to use the "html-el"
> taglib - so this question
> makes sense to me.
>
> Are you positive your final outputted html form
> shows the url correctly
> before you click on it? Because if it were blank
> due to this EL non-parsing
> issue it would explain why your
> request.getParameter() method is returning
> nothing.
>
> Regards,
> David
>
> -----Original Message-----
> From: Caroline Jen [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, July 19, 2006 12:51 PM
> To: Struts Users Mailing List
> Subject: Re: How to Pass a Textfield Value as a
> c:param to a Link using
> c:url?
>
>
> My text field and the link are defined inside a HTML
> form and I do have the html-el and the JSTL tag
> libraries. Everything else worked fine except
> passing
> this text field value as a c:param via the c:url
> link.
>
> When I submit the form, the browser address bar
> shows
> searchFirstName=
>
> a blank is sent.
>
> Let me post my code again. I tried to pass the
> value
> entered in a textfield:
>
> <html-el:text property="searchFirstName" />
>
>
> to a link this way:
>
> <c:url value="/admin/sortUsers.do"
> var="ascFirstName">
> <c:param name="searchFirstName"
> value="${searchFirstName}" />
> </c:url>
> <A href=' <c:out value="${ascFirstName}" /> '></A>
>
> and in my action class, I have
>
> String firstName = request.getParameter(
> "searchFirstName" );
>
>
> I tried to print out the firstName in my action
> class
> using System.out.println( firstName); I got a blank!
>
>
> --- Michael Jouravlev <[EMAIL PROTECTED]> wrote:
>
> > Make sure your text field is defined inside an
> HTML
> > form. Make sure
> > you have proper taglib directives on top of your
> JSP
> > page, for
> > example, for html-el tags.
> >
> > Get an HTTP sniffer and see what is sent from
> > browser when you submit
> > a form. If you use Firefox, get Live HTTP Header
> > extension.
> >
> > On 7/19/06, Caroline Jen <[EMAIL PROTECTED]>
> > wrote:
> > > I am not talking about submit a JSP, perform
> some
> > > action, and return a JSP.
> > >
> > > I submit the textfield, and I used
> > System.out.println
> > > in my action class to write out the value
> > submitted.
> > > I got a blank. Therefore, something must go
> > wrong.
> > >
> > > --- Michael Jouravlev <[EMAIL PROTECTED]> wrote:
> > >
> > > > On 7/19/06, Caroline Jen
> <[EMAIL PROTECTED]>
> > > > wrote:
> > > > > I must have done someting wrong.
> > > > >
> > > > > I tried to pass the value entered in a
> > textfield:
> > > > > <html-el:text property="searchFirstName" />
> > > > >
> > > > > to a link this way:
> > > > > <c:url value="/admin/sortUsers.do"
> > > > var="ascFirstName">
> > > > > <c:param name="searchFirstName"
> > > > > value="${searchFirstName}" />
> > > > > </c:url>
> > > > >
> > > > > and in my action class, I have
> > > > > String firstName = request.getParameter(
> > > > > "searchFirstName" );
> > > > >
> > > > > I tried to print out the firstName, I got a
> > blank!
> > > > >
> > > > > Please advise what went wrong.
> > > >
> > > > JSP tags are processed *on server*. For your
> > setup
> > > > to work you need to
> > > > submit a pag with <html-el:text
> > > > property="searchFirstName" /> to the
> > > > server first, read value from request
> parameter
> > and
> > > > stick it into
> > > > appropriate scope under "searchFirstName"
> name.
> > > >
> > > > Then, when you forward to JSP from your
> action,
> > > > JSP/servlet engine
> > > > will process JSP tags, still *on server*. It
> > will
> > > > read
> > > > "searchFirstName" from servlet scope and write
> > out
> > > > its value into
> > > > generated HTML markup. Then resulting HTML
> page
> > will
> > > > be sent to
> > > > browser.
> > > >
> > > > If you want to do the whole thing on client,
> use
> > > > HTML form and submit
> > > > it with GET method. This way form fields will
> be
> > > > appended to "action"
> > > > URL, exactly as you wanted.
>
>
>
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