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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