How can I embed an SVG image using JSF/OmniFaces/PrimeFaces?

问题

Here's what I'm trying to do:

I have a @ViewScoped JSF bean in which I call a JAX-RS service using Jersey.
The resource I'm requesting returns a response with content-type image/svg+xml.
Display it in a Facelet page.

My research so far has lead me to believe:

h:graphicImage (Core JSF) does not support SVG
p:graphicImage (PrimeFaces) does not support SVG
o:graphicImage (OmniFaces) does not support SVG either.

Is there no way to deliver an SVG image to a facelets page from a backing bean? The service that serves the SVG images will be extended later to support delivering (among other formats) PNG but I was hoping to utilize the SVG directly.

回答1:

The <o:graphicImage> sets a default content type of image, but your browser apparently didn't swallow that for SVG images. As per this commit, I've for OmniFaces 2.1 added SVG support for <o:graphicImage dataURI="true"> and I've added a new type attribute which allows you to explicitly specify the image type via file extension:

<o:graphicImage value="#{bean.image}" type="svg" />

In case it throws an IllegalArgumentException like this one

java.lang.IllegalArgumentException: o:graphicImage 'type' attribute must represent a valid file extension. Encountered an invalid value of 'svg'.

Then it means that your server doesn't recognize it as a registered mime mapping. You should then add a new mime mapping to server's or webapp's web.xml as below:

<mime-mapping>
    <extension>svg</extension>
    <mime-type>image/svg+xml</mime-type>
</mime-mapping>

回答2:

I haven't tried it, but can you use JSF's ui:include? Something like this:

<ui:include src="assets/img/fileFromJersey.svg" />

来源：https://stackoverflow.com/questions/28325807/how-can-i-embed-an-svg-image-using-jsf-omnifaces-primefaces

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