Problème avec org.w3c.dom.Element
Bonsoir,
Je suis sur Eclipse Version: 2024-09 (4.33.0) en JAVA-SE 18
J'essais de parser un fichier TCX avec SAX
A la ligne 48 j'ai l'erreur : Cannot cast from Node to Element du texte est en rouge
Je colle le code ci-dessous
Si l'on pouvait m'aider
Code:
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| import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.jar.Attributes;
import javax.swing.text.html.parser.Element;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import org.w3c.dom.Element;
public class Main {
public static void main(String[] args) {
try {
File tcxFile = new File("ASCU.tcx");
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(tcxFile);
doc.getDocumentElement().normalize();
List<Trackpoint> trackpoints = parseTrackpoints(doc);
List<SlopeSegment> slopeSegments = calculateSlopeSegments(trackpoints);
for (SlopeSegment segment : slopeSegments) {
System.out.println("Distance: " + segment.distance + "m, Slope: " + segment.slopePercentage + "%");
}
} catch (Exception e) {
e.printStackTrace();
}
}
private static List<Trackpoint> parseTrackpoints(Document doc) {
List<Trackpoint> trackpoints = new ArrayList<>();
NodeList nList = doc.getElementsByTagName("Trackpoint");
for (int temp = 0; temp < nList.getLength(); temp++) {
Node node = nList.item(temp);
if (node.getNodeType() == Node.ELEMENT_NODE) {
Element trackpointElement = (Element) node;
double latitude = Double.parseDouble(trackpointElement.getElementsByTagName("LatitudeDegrees").item(0).getTextContent());
double longitude = Double.parseDouble(trackpointElement.getElementsByTagName("LongitudeDegrees").item(0).getTextContent());
double altitude = Double.parseDouble(trackpointElement.getElementsByTagName("AltitudeMeters").item(0).getTextContent());
double distance = Double.parseDouble(trackpointElement.getElementsByTagName("DistanceMeters").item(0).getTextContent());
trackpoints.add(new Trackpoint(latitude, longitude, altitude, distance));
}
}
return trackpoints;
}
private static List<SlopeSegment> calculateSlopeSegments(List<Trackpoint> trackpoints) {
List<SlopeSegment> slopeSegments = new ArrayList<>();
for (int i = 1; i < trackpoints.size(); i++) {
Trackpoint prev = trackpoints.get(i - 1);
Trackpoint curr = trackpoints.get(i);
double distanceDiff = curr.distance - prev.distance;
double altitudeDiff = curr.altitude - prev.altitude;
double slopePercentage = (altitudeDiff / distanceDiff) * 100;
slopeSegments.add(new SlopeSegment(distanceDiff, slopePercentage));
}
return slopeSegments;
}
static class Trackpoint {
double latitude;
double longitude;
double altitude;
double distance;
Trackpoint(double latitude, double longitude, double altitude, double distance) {
this.latitude = latitude;
this.longitude = longitude;
this.altitude = altitude;
this.distance = distance;
}
}
static class SlopeSegment {
double distance;
double slopePercentage;
SlopeSegment(double distance, double slopePercentage) {
this.distance = distance;
this.slopePercentage = slopePercentage;
}
}
} |
