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You can only get an NPE in this case if the nodeList is empty (so item(0)
returns null). If your document uses namespaces, you may need to have
prefixes on the steps of the path, e.g. "/p:applet/p:transport". The
default namespace will *not* be used in an XPath. A tag mentioned without a
prefix in an xpath expression will be assumed to be in the null namespace.
The prefixes in the path must either match those of xmlDocument or you need
to supply some context that provides the prefix -> namespace mapping.
Also, if you are using namespaces, you should be calling getAttributeNS
rather than getAttribute.
Jeff
----- Original Message -----
From: "Nishi Prafull" <nishiprafull@gmail.com>
To: "John Rivett-Carnac" <jbrc@blueyonder.co.uk>
Cc: <xml-dev@lists.xml.org>
Sent: Monday, January 24, 2005 3:06 PM
Subject: Re: [xml-dev] Java NPE at node.getAttribute( )
> Hi John:
> I tried your suggestion:
> NodeList nodeList=xmlDocument.selectNodes("/applet/transport", nsr);
> XMLElement node=(XMLElement)nodeList.item(0);
> String trans_val1 = node.getAttribute("name");
>
> But I still get a NPE at node.getAttribute("name").
>
> Can you suggest anything?
>
> Thanks.
>
> On Mon, 24 Jan 2005 22:00:06 -0000, John Rivett-Carnac
> <jbrc@blueyonder.co.uk> wrote:
> >
> > I think you should get the "transport" nodes in a node collection, then
get
> > the name attribute of each transport node:
> >
> > NodeList nodeList=xmlDocument.selectNodes("/applet/transport", nsr);
> > XMLElement node=(XMLElement)nodeList.item(0);
> > String trans_val1 = node.getAttribute("name");
> >
> >
>
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