Re: an XML parser problem

Hello Frank,

This doesn't look like a specific Schema-related issue, rather something to be discussed in xml-dev or one of the Apache mailing
lists.

Regarding tutorials on parsing XML, you really have the embarassment of making a choice. Start to browse the W3C website itself (the
DOM Specification itself isn't quite a tutorial), look at Robin Cover's XML Pages (www.oasis-open.org) for lots of good pointers,
try www.xml.org etc. Work yourself through some sample code (such as ui.TreeView coming with the Xerces-J samples) and try to
understand what it does.

Frank Zhou wrote:

> Hi,All,
>
>    I am trying to use DOM parser to parse a simple XML
> file (in my local computer). I did  not get any error
> message in parsing the file, however, when I
> getDocument() from the parser and traverse it, I found
> that I got all the element and attribute names
> correctly as well as the document structure, but lost
> all the value information for the elements and
> attributes.

The content (“value”) of an DOM Element node is contained within its Text (and/or CDATASection) child node(s).

> Also, when I try to getElementsByTagName,
> I get 0 entries althougth I know there are elements in
> the file matches the tag name.
>
>     I guess I did not know how to use the DOM parser,
> can anyone out there kindly teach me on this?
>
> Thanks in advance.
> Steven
>
>     Here are the few lines I used in my code:
>
>             DOMParser parser = new DOMParser();
>             ErrorHandler errorHandler = new
> ErrorHandler();
>             parser.setErrorHandler(errorHandler);

Not sure what environment you are using: your attempt to instantiate the SAX ErrorHandler interface is probably ignored.


>             parser.parse(CONTROL_FILE_NAME);
>             Document document = parser.getDocument();
>
>             NodeList testEntries =
> document.getElementsByTagName("tagName");

Your getElementsByTagName() method call asks for elements named “tagName” -- of course, if tagName is a String variable containing a
tag name, you should use it unquoted.

Hoping this helps,

--
Jacques Deseyne
SWIFTAlliance WebStation Development Team
IT/Interfaces
S.W.I.F.T. SCRL
Tel: +32 2 655 45 87
http://becqw460.swift.com

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