Re: navigating pages in JSF

From:

Lew <lew@lewscanon.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 30 Aug 2007 17:27:16 -0400

Message-ID:

<YaednWY02KOpq0rbnZ2dnUVZ_j-dnZ2d@comcast.com>

Lew wrote:

Pradyut wrote:

On Aug 31, 1:52 am, Lew <l...@lewscanon.com> wrote:

Pradyut wrote:

Hi,
I m using netbeans IDE 6.0. I want to know how to navigate pages
in JSF. I can forward from one page to another using page navigation
but want to know how to send and retrieve parameters in JSF pages...

<http://java.sun.com/javaee/5/docs/tutorial/doc/JSFIntro6.html#wp115538>
<http://java.sun.com/javaee/5/docs/tutorial/doc/JSFPage10.html#wp119785>

I can navigate to a different page and can forward to different pages
depending on the form validations. But i cannot forward the parameters
like textfield to the forwarded page nor do i know to retrieve the
values.

The managed-bean element in the faces-config.xml can specify that a
property be initialized from a session value. You can either declare a
(small!) managed-bean of session scope or explicitly place an attribute
in the session in your forwarding page's backing bean's action method.

<http://java.sun.com/javaee/5/docs/tutorial/doc/JSFConfigure3.html#wp1000014>

It doesn't even have to be session scope. I haven't tried it with JSF yet
myself, but in my own MVC-cycle servlets in non-JSF projects I just placed
attributes in the request, which avoids a host of session-related
complications. I betcha JSF supports that sort of thing, too. Place the
attribute in the request (not the session) and refer to it in the
managed-property via the EL with a scoped attribute.

--
Lew