Michael Yuan

I have just updated all the 17 sample applications in my JBoss Seam book to JBoss AS 4.2.0 GA (w/ Seam 1.2.1 GA). You can now download the sample projects for both JBoss AS 4.0.5 and 4.2.0. If you find those examples useful, I’d appreciate if you can buy a copy of the book as well.

Since a lot of people seem to be confused about this, let me list the steps you need to convert a Seam application from JBoss AS 4.0.5 to JBoss AS 4.2.0:

1. Edit the resources/WEB-INF/web.xml file, and remove the MyFaces listener.

2. Edit the resources/META-INF/application.xml file, and remove the modules referencing el-api.jar and el-ri.jar.

3. Remove the el-api.jar and el-ri.jar files from the final application archive (edit the build.xml file for the ear or war tasks).

4. Edit the resources/WEB-INF/faces-config.xml file and add the SeamELResolver using the new JSF 1.2 XML schema declaration.

Do NOT miss the crucial step of removing el-*.jar from both the application and from the application.xml. If you do not remove those JARs and their references, your application will hang on JBoss AS 4.2.0 GA with a cryptic error message (before you ask, yes, we are fixing it). So, be aware!!

Note: Evidentially, the Seam security package still has some residue dependency on the Sun EL RI package. So, you might consider leaving el-ri.jar in the app if you use those features. It is confirmed to work in JBoss AS 4.2.1 GA. See comments below.