(xalan-j) : XPathAPI and namespaces 2006-02-14 - By sol myr
I'm having a problem with XPATH and namespaces.
Could anyone please help ?
I'm using apache XPathAPI, with java 1.4.
It works fine as long as there are no namespaces.
Unfortunately, when adding namespaces to the xml, XPathAPI fails to find the
desired element (returning null).
--- code ----------------------------------------
String xml=
"< ns1:body xmlns:ns1='tempuri' >" +
"< ns1:status > OK < / ns1:status >" +
"< / ns1:body >";
// Parse the above xml string:
DocumentBuilder docBuilder= DocumentBuilderFactory.newInstanc()
.newDocumentBuilder();
Document doc=docBuilder.parse(new InputSource(new StringReader(xml)));
Node root=doc.getDocumentElement();
// Tell XPathAPI that "ns1" is the prefix for namespace "tempuri" :
Element nsResolverNode=doc.createElement("NamespaceResolver");
nsResolverNode.setAttribute("xmlns:ns1", "tempuri");
// This returns "null", instead of the desired < status > element... why ?
Node subNode = XPathAPI.selectSingleNode(root, "ns1:body/ns1:status",
nsResolverNode);
--- end code -------------------------------------
What am i doing wrong ? Do you know of a better way to do it ?
Thanks very much.
---------------------------------
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<div><FONT face=Verdana>I'm having a problem with XPATH and namespaces.<BR
>Could anyone please help ?<BR><BR>I'm using apache XPathAPI, with java 1.4.<BR
>It works fine as long as there are no namespaces.<BR>Unfortunately, when adding
namespaces to the xml, XPathAPI fails to find the desired element (returning
null).</FONT></div> <div><FONT face=Verdana></FONT> </div> <div><FONT
face=Verdana>--- code ----------------------------------------</FONT></div>
<div><FONT size=2>String xml=<BR> "< ns1:body xmlns
:ns1='tempuri' >" +</FONT></div> <div><FONT size=2>
"< ns1:status > OK < / ns1:status >"
+<BR> "< / ns1:body >";<BR></FONT></div> <div>
<FONT size=2>// Parse the above xml string:<BR>DocumentBuilder docBuilder=
DocumentBuilderFactory.newInstanc().newDocumentBuilder();<BR>Document doc
=docBuilder.parse(new InputSource(new StringReader(xml)));<BR>N
ode
root=doc.getDocumentElement();<BR> <BR>// Tell XPathAPI that "ns1" is the
prefix for namespace "tempuri" :<BR>Element nsResolverNode=doc
.createElement("NamespaceResolver");<BR>nsResolverNode.setAttribute("xmlns:ns1",
"tempuri");<BR> <BR>// This returns "null", instead of the desired < status
> element... why ?<BR>Node subNode = XPathAPI.selectSingleNode(root, "ns1
:body/ns1:status", nsResolverNode);<BR> </FONT></div> <div><FONT face
=Verdana>--- end code -------------------------------------</FONT></div> <div>
<BR><BR>What am i doing wrong ? Do you know of a better way to do it ?<BR></div>
<div>Thanks very much.</div><p>
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