FullAjaxExceptionHandler does not redirect to error page after invalidated session

问题

I am having issues with the Omnifaces FullAjaxExceptionHandler (http://showcase.omnifaces.org/exceptionhandlers/FullAjaxExceptionHandler). It does not redirect to the specified error page after the session is invalidated.

I have the following in my faces-config:

<factory>
    <exception-handler-factory>org.omnifaces.exceptionhandler.FullAjaxExceptionHandlerFactory</exception-handler-factory>
</factory>

And the following in my web.xml:

<error-page>
    <exception-type>javax.faces.application.ViewExpiredException</exception-type>
    <location>/pages/error/viewExpired.html</location>
</error-page>

After I invalidate the session, from a user's perspective nothing seems to happen. The application is just 'dead'. In my console I see the following Ajax request:

A POST to the original facelet page with a response code of 302
a GET to the login page with a code 200 (but nothing happens because it's requested via Ajax)

I am running MyFaces 2.1.10, Primefaces 3.5, Primefaces Extension 0.6.3 & Omnifaces 1.4.1 on WebLogic 12c

Could anyone help me in the right direction? How do I get the FullAjaxExeptionHandler to work properly?

Thanks

回答1:

A POST to the original facelet page with a response code of 302

This is not right. A redirect on a JSF ajax request must have a response code of 200 with a special XML response with a <redirect> element with target URL in its url attribute.

This thus indicates that you manually used HttpServletResponse#sendRedirect() somewhere long before JSF has the chance to deal with ViewExpiredException.

Perhaps you've somewhere a servlet filter which checks some session attribute and sends a redirect based on its presence/state? That filter should then be manipulated based on the following answer: JSF Filter not redirecting After Initial Redirect in order to recognize JSF ajax requests and return a special XML response instead of a 302 response.

E.g.

if ("partial/ajax".equals(request.getHeader("Faces-Request"))) {
    response.setContentType("text/xml");
    response.getWriter()
        .append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>")
        .printf("<partial-response><redirect url=\"%s\"></redirect></partial-response>", loginURL);
} else {
    response.sendRedirect(loginURL);
}

This all is completely unrelated to the FullAjaxExceptionHandler. JSF didn't have any chance to throw a ViewExpiredException because you're already sending a redirect yourself beforehand.

来源：https://stackoverflow.com/questions/16030922/fullajaxexceptionhandler-does-not-redirect-to-error-page-after-invalidated-sessi

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