Tag Archives: richfaces

Fix your Richfaces AJAX (performance) problems

Richfaces supports AJAX functionality in a lot of it components. However a servlet filter is needed for correct functioning of partial page refreshes.

In this post we’ll show you how to add this filter and at the same time optimize Richfaces performance.

The following Richfaces filter is defined in the web.xml:

        <display-name>RichFaces Filter</display-name>

What this filter does, is to ‘tidy’ all HTML HTTP Responses so that they are valid XHTML (thus XML compliant). This is needed as dynamic DOM updates in the browser need correct XML.

If you don’t define this filter, it is possible that you’ll not see your AJAX update being rendered on the screen, although you’ll see the html response coming back in eg. Firebug

Of course, parsing HTML incurs a performance overhead.
This can be minimized by setting the forceparser setting to false. In that case only AJAX responses will be ‘tidied’. In the other case all JSF responses are ‘tidied’. That is because the filter is mapped on the Faces servlet:

        <servlet-name>Faces Servlet</servlet-name>

Richfaces has a few parsers onboard. The default one is based on Tidy, but it is quite slow. The Neko parser is faster and can be used by setting the following context-param’s:


Here we say we only use the NEKO filter and it should be applied to all URLs (.)
There is more configuration possible, like using NONE for some pages that don’t need HTML correction to further speedup things if needed.

Example can be found at: http://jboss.com/index.html?module=bb&op=viewtopic&t=116231

JSF 1.1 and 1.2 Support in future versions of Richfaces

Richfaces, one of the most fully featured JSF frameworks from JBoss has posted their roadmap for the future versions on their forum.

The Richfaces 3.1.x branch (the current general access production version) is now in maintenance mode and will not receive any new functionality anymore. Only bugfixes that do not require a long QA testing period will still be fixed on this branch.

This branch is also the latest one that supports JSF1.1 and Java 1.4! So it’s really getting time to upgrade to Java 5 or 6!

Richfaces 3.2.0, which supports JSF1.2 and Java 1.5 (or higher) will be released at the end of March. Richfaces 3.1.5 will be released around three weeks after the Richfaces 3.2.0 release. (e.g. the second half of April, 2008.)

More info at http://jboss.com/index.html?module=bb&op=viewtopic&t=129518