JBoss 4.2.0.GA comes with JavaServer Faces (JSF) 1.2 - a newer JSF version than JBoss 4.0.5.GA. They chose the SUN implementation. (I think that MyFaces will really soon be obsolete.) This upgrade requires some changes in applications using JSF (for example the applications that are Seam based). Here is what I have done to make it work, including some steps from [Michael Yuan’s blog post](http://www.michaelyuan.com/blog/2007/05/29/seam-book-examples-updated-to-jboss-as-420-ga/).
application.xml you need to remove the following libraries:
<module> <java>el-api.jar</java> </module> <module> <java>el-ri.jar</java> </module>
You also need to add the following:
<module> <java>commons-collections-3.1.jar</java> </module>
Make sure that
commons-collections-3.1.jar is at the root of your EAR.
This is required by Ajax4jsf, because JBoss 4.2.0.GA is provided with a
version of Commons Collections that does not seem to work with Ajax4jsf.
It seems that JBoss Seam and Facelets in conjunction with JBoss 4.2.0.GA
delivers your content with MIME type
xhtml+xml. In order to fix this
problem you have to add the following in your Facelets template:
This has to come just after the `html` tag. == faces-config.xml It is advisable to use the new SEAM EL resolver - in `faces-config.xml` use the following:
<application> <el-resolver>org.jboss.seam.jsf.SeamELResolver</el-resolver> <message-bundle>messages</message-bundle> </application>
Note that it seems to work without changing the resolver. If you choose to use the new EL-resolver don't forget to change your `faces-config.xml` to use the new 1.2 JSF schema:
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">
== web.xml Last but not least, you need to remove the following from your `web.xml`:
<listener> <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class> </listener>
This is because JSF 1.2 doesn't need a start-up context (and this one was MyFaces-based anyway). Happy coding with JBoss 4.2.0.GA.