Java EE (Java Enterprise Edition) General Discussion

I would like to display an error page when I run into some exception in a JSF page. I have configured web.xml as follows:

<error-page>
<error-code>100</error-code>
<location>/serverError.jsp</location>
</error-page>

Then, in my code, when I get an exception, I execute the following code:

FacesContext context = FacesContext.getCurrentInstance();
HttpServletResponse response =
(HttpServletResponse) context.getExternalContext().getResponse();

try {
response.sendError(100);
}
catch (IOException ex) {
log.error("Exception trying to handle server error: " +
"original exception = " + e);
}

However, when I execute this code, the server does not display my error page. I do see my error page on uncaught exception (I have also a error rule on error code 500). Is there anything special that should be done to make the error page handling in JSF?

Martin