openhtmltopdf
openhtmltopdf copied to clipboard
Published
20 hours ago •
danfickle
danfickle
BatikSVGDrawer does not load custom-protocol raster images through provided FSStreamFactory
Given an HTML document which embeds the same image having a custom-protocol URL 2 times, once through an HTML <img> tag and once through an SVG <image> tag in an inline SVG image:
<!DOCTYPE html>
<html lang="en">
<body>
<p><img src="foo:/flyingsaucer.png" /></p>
<p><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<image xlink:href="foo:/flyingsaucer.png" width="145" height="123" />
</svg></p>
</body>
</html>
And given an implementation of FSStreamFactory handling foo: URLs is provided:
public class FooStreamFactory implements FSStreamFactory {
//...
}
new PdfRendererBuilder()
.useProtocolsStreamImplementation(new FooStreamFactory(), "foo")
.useSVGDrawer(new BatikSVGDrawer(SECURE, Set.of("foo")))
.withHtmlContent(HTML, "")
.toStream(out)
.run();
When rendering this with Open PDF to HTML then a document showing 2 flying saucers images should be created.
But the resulting document contains only 1 flying saucers image and this warning message is logged:
com.openhtmltopdf.exception WARNING:: Couldn't draw SVG. => org.apache.batik.transcoder.TranscoderException:: null
Enclosed Exception:
null:0
The URI "foo:/flyingsaucer.png"
on element <image> can't be opened because:
The URI can't be opened:
Unable to make sense of URL for connection
Sample project with all code to reproduce above example
