[jboss-user] [JBoss Portal] - Re: image/png Content type not accepted
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Wed Oct 25 01:42:06 EDT 2006
I fixed my portlet.xml file but I don't think JBoss Portlal can handle a portlet that produces image/png data.
On the OpenSymphony message board, I found a discussion about producing image output from a portlet:
anonymous wrote :
| Nils-Helge Garli wrote:
| > Hm... I might have been wrong about it. Maybe you can't generate
| > image output from a portlet. Didn't see anything about that in the
| > portlet spec (maybe someone can enlighten me?).
| There's nothing that prohibits it, but there's also nothing that
| supports it, other than the call to response.setContentType();
| What a portal has to do is define a custom window state that says
| "display only this portlet". When the portlet is rendered with such a
| state it can assume that it will "own" the output, and can thus create
| images or Excel reports or whatever.
| The usual workaround for portals that doesn't have such a window state
| is to link to a servlet that can generate the data instead. Using a
| servlet is worse, however, since it cannot leverage any security
| configuration that a portlet would be able to, and would have to ensure
| on its own that any call is legitimate. But sometimes that is ok.
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