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我想從使用sax解析器的java中的xml文件中獲取數據。我成功地獲得了少量的數據,但是當數據變得太大並且在多行中時,它只給出兩行數據,而不是所有行。我想下面的代碼 -從xml讀取多行
InputStreamReader isr = new InputStreamReader(is);
InputSource source = new InputSource(isr);
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
SAXParser parser = factory.newSAXParser();
XMLReader xr = parser.getXMLReader();
GeofenceParametersXMLHandler handler = new GeofenceParametersXMLHandler();
xr.setContentHandler(handler);
xr.parse(source);
而且我GeofenceParametersXMLHandler是 -
private boolean inTimeZone = false;
private boolean inCoordinate = false;
private boolean outerBoundaryIs = false;
private boolean innerBoundaryIs = false;
private String timeZone;
private List<String> innerCoordinates = new ArrayList<String>();
private String outerCoordinates;
public String getTimeZone() {
return timeZone;
}
public List<String> getInnerCoordinates() {
return innerCoordinates;
}
public String getOuterCoordinates() {
return outerCoordinates;
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
super.characters(ch, start, length);
if (this.inTimeZone) {
this.timeZone = new String(ch, start, length);
this.inTimeZone = false;
}
if (this.inCoordinate && this.innerBoundaryIs) {
this.innerCoordinates.add(new String(ch, start, length));
this.inCoordinate = false;
this.innerBoundaryIs = false;
}
if (this.inCoordinate && this.outerBoundaryIs) {
this.outerCoordinates = new String(ch, start, length);
this.inCoordinate = false;
this.outerBoundaryIs = false;
}
}
@Override
public void endElement(String uri, String localName, String name) throws SAXException {
super.endElement(uri, localName, name);
}
@Override
public void startDocument() throws SAXException {
super.startDocument();
}
@Override
public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException {
super.startElement(uri, localName, name, attributes);
if (localName.equalsIgnoreCase("timezone")) {
this.inTimeZone = true;
}
if (localName.equalsIgnoreCase("outerBoundaryIs")) {
this.outerBoundaryIs = true;
}
if (localName.equalsIgnoreCase("innerBoundaryIs")) {
this.innerBoundaryIs = true;
}
if (localName.equalsIgnoreCase("coordinates")) {
this.inCoordinate = true;
}
}
和XML文件是 -
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2"
xmlns:gx="http://www.google.com/kml/ext/2.2">
<Placemark>
<name>gx:altitudeMode Example</name>
<timezone>EASTERN</timezone>
<Polygon>
<extrude>1</extrude>
<altitudeMode>relativeToGround</altitudeMode>
<outerBoundaryIs>
<LinearRing>
<coordinates>
-77.05788457660967,38.87253259892824,100
-77.05465973756702,38.87291016281703,100
-77.05315536854791,38.87053267794386,100
-77.05552622493516,38.868757801256,100
-77.05844056290393,38.86996206506943,100
-77.05788457660967,38.87253259892824,100
</coordinates>
</LinearRing>
</outerBoundaryIs>
</Polygon>
我總是有兩個行座標數據。但是,當他們在單行中時,我獲得了完整的數據。如何在多行中獲取完整的數據?
在此先感謝。
那麼如何獲得完整的數據? – 2012-08-14 11:01:20
他寫道,在未來的一段 – 2012-08-14 11:02:08
下面是一個完整的例子http://www.java2s.com/Code/Java/XML/SAXDemo.htm – maneesh 2012-08-14 11:05:57