如何使用Java从XML文件提取数据？

(MyObject)JAXBContext.newInstance(\"package.where.xjc.generated.the.classes\")
    .createUnmarshaller()
    .unmarshal(readerOrStreamOrFileOrURL);

XPathFactory

import java.util.*;
import java.lang.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import javax.xml.xpath.*;

class Main
{
    public static void main (String[] args) throws java.lang.Exception
    {

        DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
        domFactory.setNamespaceAware(true);
    DocumentBuilder builder = domFactory.newDocumentBuilder();
    Document doc = builder.parse(\"Devices.xml\");
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    XPathExpression expr = xpath.compile(\"//devices/device[@mobile=\'false\' and @minVersion=\'2\']/text()\");
    Object result = expr.evaluate(doc, XPathConstants.NODESET);
    NodeList nodes = (NodeList) result; 
    for (int i = 0; i < nodes.getLength(); i++) {
        System.out.println(nodes.item(i).getNodeValue());
    } 


    }
}

Firefox

Document doc = new XmlBuilder().build(new File(\"path/to/file\"));
Element devicesElement = doc.getRootElement();
Elements deviceElements = devicesElement.getChildElements();

for (int i = 0; i < deviceElements.size(); i++) {
    Element curDevice = deviceElements.get(i);
    ....
}