To enable Seam's exception handling, the master Servlet filter must be declared in web.xml
:
<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Seam Filter</filter-name>
<url-pattern>*.seam</url-pattern>
</filter-mapping>
<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Seam Filter</filter-name>
<url-pattern>*.seam</url-pattern>
</filter-mapping>
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For the exception handlers to fire, you must disable Facelets development mode in web.xml
and Seam debug mode in components.xml
.