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JSF, override HTTP headers
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Solved javajsfjsf-2facelets
S

3

8

I strongly need to override JSF 2.0 Content-Type header. Default it is 

Content-Type:application/xhtml+xml; charset=UTF-8

But I need 

Content-Type:text/html; charset=UTF-8

Thanks.

Smyth answered 27/9, 2010 at 12:42 Comment(0)
P
5

How about

<f:view contentType="text/html" />
Plumley answered 27/9, 2010 at 12:46 Comment(1)
This solution is necessary to work with older versions of iPhone and iPad. Seems like later browers are over-ridding the default Content-Type and doing their best guess. But older browser were respecting the Content-Type header and expecting header. Great solution that was simple. – Arteriovenous
D
6

Use the right doctype.

<!DOCTYPE html>

Nothing more. Also don't put <?xml?> declaration at top. Here's a minimum template:

<!DOCTYPE html>
<html 
    xmlns:f="http://java.sun.com/jsf/core" 
    xmlns:h="http://java.sun.com/jsf/html" 
    xmlns:ui="http://java.sun.com/jsf/facelets">
    <h:head>
        <title>Insert your title</title>
    </h:head>
    <h:body>
        <h1>Hello World</h1>
    </h:body>
</html>

It's the HTML5 doctype. It's fully compatible with XHTML 1.x markup and adds more advantages.

Downswing answered 27/9, 2010 at 12:48 Comment(0)
P
5

How about

<f:view contentType="text/html" />
Plumley answered 27/9, 2010 at 12:46 Comment(1)
This solution is necessary to work with older versions of iPhone and iPad. Seems like later browers are over-ridding the default Content-Type and doing their best guess. But older browser were respecting the Content-Type header and expecting header. Great solution that was simple. – Arteriovenous
A
4

The following approach works in all the browsers:

Write a PhaseListener:

  public class ContentTypePhaseListener implements PhaseListener {


        public PhaseId getPhaseId()
        {
            return PhaseId.RENDER_RESPONSE;
        }

        public void afterPhase(PhaseEvent event)
        {
        }

        public void beforePhase(PhaseEvent event)
        {
            FacesContext facesContext = event.getFacesContext();
            HttpServletResponse response = (HttpServletResponse) facesContext
                    .getExternalContext().getResponse();
            response.addHeader("Content-Type", "text/html; charset=UTF-8");

        }
    }

and register it in faces-context.xml:

<lifecycle>
        <phase-listener>com.mycompnay.listener.ContentTypePhaseListener </phase-listener>
    </lifecycle>
Aileenailene answered 27/9, 2010 at 12:49 Comment(6)
Isn't a PhaseListener a bit too overcomplicated "solution" for this simple issue? Regardless of this, why not just a Filter since you won't have any interest in the FacesContext? – Downswing
1. it works in all the browser 2. He may need it in the future – Aileenailene
1. I am not sure how doing the job inside a PhaseListener instead of a Filter or just straight in the view is been detected by the webbrowser. Can you elaborate? 2. Maybe. – Downswing
From my experience - when I had to add No-Cache to Header in this way it worked in all the browsers. using f:view or other tricks didn't do it. – Aileenailene
That's correct for particularly the cache headers. But that concerns a different problem. Hints in this answer. – Downswing
I think you misunderstood the hints and/or core-problem-cause: HTTP response headers have precedence over HTML meta headers. When not explicitly set, the webserver will supply some default HTTP response headers which may cause that HTML meta headers on same name don't have any effect. – Downswing

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