Parse xml file with validating againat dtd

Question

i have a xlm file looks like:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE map SYSTEM "map.dtd">
<map width="20" height="15" goal="25" name="eXtreme Labyrinth of Dooom">
<random-item type='lantern' amount='5' />
<random-item type='health' amount='10' />
<tile x="14" y="0" type="wall">
<renderhint>wall:rock,cracked</renderhint>
</tile>
<tile x="15" y="0" type="wall" />
<tile x="16" y="0" type="floor">
<renderhint>floor:marble,cracked</renderhint>
</tile>
<tile x="17" y="0" type="floor">
<renderhint>floor:stone,rubble</renderhint>
</tile>
<tile x="18" y="0" type="floor" />
<tile x="0" y="1" type="floor" />
<tile x="1" y="1" type="floor" startlocation="1" />
<tile x="2" y="1" type="floor" />
<tile x="3" y="1" type="floor">
<item type="treasure">Bar of Silver</item>
<renderhint>floor:stone,blood</renderhint>
</tile>
<tile x="4" y="1" type="wall" />
<tile x="5" y="1" type="wall" />
<tile x="6" y="1" type="wall">
<renderhint>wall:bricks,cracked</renderhint>
</tile>
</map>and a dtd document like:
<!ELEMENT map (random-item+, tile+)>
<!ATTLIST map
width CDATA #REQUIRED
height CDATA #REQUIRED
goal CDATA #REQUIRED
name CDATA #REQUIRED
<!ELEMENT random-item EMPTY>
<!ATTLIST random-item
type (armour|health|sword|treasure|lantern) #REQUIRED
amount CDATA #REQUIRED
<!ELEMENT tile (item|renderhint)*>
<!ATTLIST tile
x CDATA #REQUIRED
y CDATA #REQUIRED
type (exit|floor|wall) #REQUIRED
startlocation CDATA #IMPLIED
<!ELEMENT item (#PCDATA)>
<!ATTLIST item
type (armour|health|sword|treasure|lantern) #REQUIRED
<!ELEMENT renderhint (#PCDATA)>i need to validate the xml file against the dtd document and parse it to java using DOM.
Can anyone give ma any suggestions on how to do it?
thank you

Answer 1

i have started my coding like:
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
import java.io.*;
class loadxml
    public static void main(String[] args)
     try {
          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
          factory.setValidating(true);
          factory.setIgnoringElementContentWhitespace(true);
          DocumentBuilder parser = factory.newDocumentBuilder();
          Document doc = parser.parse(new File("hallways.xml"));
          loadxml load = new loadxml();
          load.parseNode(doc);
     } catch (ParserConfigurationException e) {
          e.printStackTrace();
     } catch (SAXException e) {
          e.printStackTrace();
     } catch (IOException e) {
          e.printStackTrace();
    public void parseNode (Node node) throws IOException
           // here is where i have problem with
}since in my xml file, i have got ATTLIST, this ready confuses me when i try to coding it.
Can anyone help me, please.
Thank you.
Edited by: mujingyue on Mar 12, 2008 3:10 PM