XPathAPI: eval exp using nodes with default namespace 2006-09-12 - By Karr, David
Xalan 2.7.0, JDK 1.4.2, WebLogic 8.1.4.
I'm trying to write xpath validation expressions for the following SOAP
message (slightly edited). I could use some help understanding what I'm
seeing here, and how to make this work well.
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<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body>
<ReportResponse xmlns="http://...">
<ReportUrl>https://.../Test%20Portfolio.csv</ReportUrl>
<Warnings/><Errors/>
</ReportResponse>
</soapenv:Body>
</soapenv:Envelope>
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I'm processing this with code like this:
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SOAPPart soapPart = message.getSOAPPart();
Source xmlSource = soapPart.getContent();
TransformerFactory transformerFactory TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMResult domResult = new DOMResult();
transformer.transform(xmlSource, domResult);
Node node = domResult.getNode();
System.out.println("node[" + node + "]");
Element documentElement = ((Document) node).getDocumentElement();
for (Iterator iter = xpathStrs.iterator(); iter.hasNext(); )
{
String xpathStr = (String) iter.next();
XObject object = XPathAPI.eval(documentElement, xpathStr, node);
System.out.println("object[" + object + "]");
}
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When I evaluate this expression: /soapenv:Envelope
It fails, saying that "soapenv" must resolve to a namespace.
I then tried instead: /env:Envelope
This works (the Xobject is not null). I'm not sure why this works, and
the other one does not.
Next, I tried the expression: /env:Envelope/env:Body/ReportResponse
This fails. I'm guessing it has something to do with the fact that I'm
trying to use the default namespace, but I think referencing no prefix
in Xpath means to use "no namespace", which isn't the same thing.
What's going on here, and what do I need to do differently?
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