Re: Parsing XML with Dom

From:
=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>
Newsgroups:
comp.lang.java.programmer
Date:
Sun, 30 Sep 2007 17:37:00 -0400
Message-ID:
<470016bb$0$90276$14726298@news.sunsite.dk>
Arne VajhHj wrote:

nuthinking@googlemail.com wrote:

The problem seemed it is that setIgnoringElementContentWhitespace
works if the xml refers to either to xsd or dtd.


To some extent that I think that makes sense.

Only with a DTD or XSD is it possible to identify something
as content whitespace.


Try look at the attached example.

Arne

====================================

package september;

import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.traversal.DocumentTraversal;
import org.w3c.dom.traversal.NodeFilter;
import org.w3c.dom.traversal.TreeWalker;
import org.xml.sax.InputSource;

public class XMLandWS {
     public static void parse(String xml) throws Exception {
         System.out.print(xml);
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         dbf.setIgnoringElementContentWhitespace(true);
         DocumentBuilder db = dbf.newDocumentBuilder();
         Document doc = db.parse(new InputSource(new StringReader(xml)));
         TreeWalker walk = ((DocumentTraversal)
doc).createTreeWalker(doc.getDocumentElement(), NodeFilter.SHOW_TEXT,
null, false);
         Node n;
         while ((n = walk.nextNode()) != null) {
             System.out.println("=" + n.getNodeValue().replace("\n",
"\\n").replace(" ", "_"));
         }
     }
     public static void main(String[] args) throws Exception {
         parse("<all>\n" +
               " <one>A</one>\n" +
               " <one>BB</one>\n" +
               " <one>CCC</one>\n" +
               "</all>\n");
         parse("<!DOCTYPE all [\n" +
               "<!ELEMENT all (one)*>\n" +
               "<!ELEMENT one (#PCDATA)>\n" +
               "]>\n" +
               "<all>\n" +
               " <one>A</one>\n" +
               " <one>BB</one>\n" +
               " <one>CCC</one>\n" +
               "</all>\n");
         parse("<!DOCTYPE all [\n" +
                 "<!ELEMENT all (#PCDATA|one)*>\n" +
                 "<!ELEMENT one (#PCDATA)>\n" +
                 "]>\n" +
                 "<all>\n" +
                 " <one>A</one>\n" +
                 " <one>BB</one>\n" +
                 " <one>CCC</one>\n" +
                 "</all>\n");
     }
}

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