sax解析文件

package sax;

import java.util.List;

import test.TestMain;

public class ListingModel {
private String id;
private String name;
private List<TextModel> textModelList;
private List<CouponModel> couponModelList;

...

}
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package sax;
public class TextModel {
private String link;
private String title;
        private String type;
...
}

-------------
package sax;
import java.util.ArrayList;
import java.util.List;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class InstallHandler extends DefaultHandler {
int point = 0;
ListingModel listingModel = new ListingModel();
List<TextModel> textModelList = new ArrayList<TextModel>();
TextModel textModel = new TextModel();
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
// TODO Complete method stub for startElement
point = 0;
if (qName.equals("id")) {
point = SaxConstants.pointID;
}
if (qName.equals("name")) {
point = SaxConstants.pointName;
}
////content point
if (qName.equals("text")) {
point = SaxConstants.pointText;
if (attributes != null && attributes.getLength() != 0) {
for (int i = 0; i < attributes.getLength(); i++) {
textModel.setType(attributes.getValue(i));
}
}
}
if (qName.equals("link")) {
point = SaxConstants.pointTextLink;
}
if (qName.equals("title")) {
point = SaxConstants.pointTextTitle;
}
////
}

public void endElement(String uri, String localName, String qName)
throws SAXException {
        if (qName.equals("text")) {
        textModelList.add(textModel);
        listingModel.setTextModelList(textModelList);
        textModel = new TextModel();
}
point = 0;

}

public void characters(char[] ch, int start, int length)
throws SAXException {
// TODO Complete method stub for characters
String pointName = new String(ch, start, length);
switch (point) {
case SaxConstants.pointID:
listingModel.setId(pointName);
break;

case SaxConstants.pointName:
listingModel.setName(pointName);
break;

case SaxConstants.pointTextLink:
textModel.setLink(pointName);
break;
case SaxConstants.pointTextTitle:
textModel.setTitle(pointName);
break;
}
}

public ListingModel getListingModel() {
return listingModel;
}

public void setListingModel(ListingModel listingModel) {
this.listingModel = listingModel;
}
}


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注意：
1.sax可以解决dom解析大型文件的困难

2.sax顺序解析，dom一次性放入内存