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https://issues.apache.org/jira/browse/BATIK-1278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17400336#comment-17400336
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Stefan Mandel commented on BATIK-1278:
--------------------------------------
The NPE hides the real exception (something related to CSS) and occurs because
toString is invoked on uri (which cannot be assumed non-null). The source code
of CSS-Engine already contains nullchecks of the type uri == null?
"<unknown>":uri.toString(). It would be easy to replace it at
CSSEngine.java:1223
> W3C example image, parseStyleSheet nullpointer
> ----------------------------------------------
>
> Key: BATIK-1278
> URL: https://issues.apache.org/jira/browse/BATIK-1278
> Project: Batik
> Issue Type: Bug
> Components: CSS
> Affects Versions: 1.12
> Reporter: Koen De Groote
> Priority: Minor
> Attachments: Use04-GeneratedContent.svg, Use04.svg
>
>
> Possible duplicate of https://issues.apache.org/jira/browse/BATIK-1163
>
> Example image from here: [https://www.w3.org/TR/SVG11/struct.html]
>
> Specifically, example "Example Use04":
> [https://www.w3.org/TR/SVG11/images/struct/Use04.svg]
>
> Stacktrace:
>
> {code:java}
> java.lang.NullPointerException: null
> at org.apache.batik.css.engine.CSSEngine.parseStyleSheet(CSSEngine.java:1223)
> at org.apache.batik.css.engine.CSSEngine.parseStyleSheet(CSSEngine.java:1204)
> at
> org.apache.batik.anim.dom.SVGOMStyleElement.getCSSStyleSheet(SVGOMStyleElement.java:140)
> at
> org.apache.batik.css.engine.CSSEngine.getStyleSheetNodes(CSSEngine.java:923)
> at
> org.apache.batik.css.engine.CSSEngine.getCascadedStyleMap(CSSEngine.java:785)
> at org.apache.batik.css.engine.CSSEngine.getComputedStyle(CSSEngine.java:867)
> at
> org.apache.batik.bridge.CSSUtilities.getComputedStyle(CSSUtilities.java:81)
> at
> org.apache.batik.bridge.CSSUtilities.convertVisibility(CSSUtilities.java:578)
> at
> org.apache.batik.bridge.SVGSVGElementBridge.createGraphicsNode(SVGSVGElementBridge.java:141)
> at org.apache.batik.bridge.GVTBuilder.build(GVTBuilder.java:76)
> at
> org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:208)
> at
> org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTranscoder.java:92)
> at
> org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstractTranscoder.java:142)
> at
> org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:156){code}
> I've uploaded the image for easy access. Also uploaded is a nearly identical
> example from the same page, that doesn't produce this nullpointer.
>
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