Prøv og se på det her:
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class DomTest {
private final static String XML_FILE = "C:\\domtest.xml";
public static void main(String[] args) {
ArrayList data1 = new ArrayList();
data1.add("a1");
data1.add("b2");
data1.add("c3");
data1.add("d4");
writeXml(data1, XML_FILE);
ArrayList data2 = readXml(XML_FILE);
System.out.println(data2);
}
private static void writeXml(ArrayList data, String filename) {
try {
PrintWriter pw = new PrintWriter(new FileOutputStream(filename));
pw.println("<?xml version='1.0' standalone='yes'?>");
pw.println("<arraylist>");
for (int i = 0; i < data.size(); i++) {
pw.println(
" <element>" + (String) data.get(i) + "</element>");
}
pw.println("</arraylist>");
pw.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
private static ArrayList readXml(String filename) {
ArrayList result = new ArrayList();
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(new File(filename));
NodeList elements = doc.getElementsByTagName("element");
for (int i = 0; i < elements.getLength(); i++) {
Node element = elements.item(i);
result.add(element.getFirstChild().getNodeValue());
}
} catch (FactoryConfigurationError e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
}
