How can i modify xml-stylesheet attribute value in java

Question

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet href="Sample.xsl" type="text/xsl"?>
<MyDoc>.....</MyDoc>

I want to modify the attribute href's value to 'MyDoc.xsl'. I have tried using XPath but it returns nothing:

//xml-stylesheet[contains(text(), 'Sample.xsl')]/@href";

Also using Document only gives elements starting at MyDoc

NodeList list = taggedC32Doc.getElementsByTagName("*");

Is there any way i can do this?

keshlam · Accepted Answer · 2014-02-12 14:10:08Z

1

The line you want to change is a Processing Instruction, not an Element, so neither of your attempts to find it as an element will work. Try

/processing-instruction(xml-stylesheet)

You can then get that node's data, which will be href="Sample.xsl" type="text/xsl". Perform the appropriate string manipulation to find and change the href pseudo-attribute in that string -- sorry, most XML APIs don't provide any assistance in doing so, because as far as XML is concerned the PI's data is an unformatted string even though it's usually structured to resemble attributes -- and set the new data back into the ProcessingInstruction node.

edited Feb 12, 2014 at 14:10

answered Feb 12, 2014 at 0:24

keshlam

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5 Comments

Michael Kay Over a year ago

The processing-instruction() node test is also available in XPath 1.0.

keshlam Over a year ago

... Yup. I checked the REC because I wasn't certain (I've been away from XSLT for a while), and somehow missed it. Thanks for keeping me honest.

keshlam Over a year ago

(Rechecking... It's there, but not as well documented as I'd like. Haven't yet checked whether there's been an erratum filed to suggest this be fixed.)

Michael Kay Over a year ago

XPath 1.0 generally isn't as well documented as some people would like. No one is going to fix that.

keshlam Over a year ago

Yeah, I should have checked your book (free unsolicited plug) ... I really wish someone had the time/energy/determination to do equivalents of the Annotated XML Rec for other W3C specs, or even to update that one to XML 1.1. Oh well. Digression, apologies to all.

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