从XML获取Java语言中的子节点

import org.w3c.dom.*;
import javax.xml.parsers.*;
import java.io.*;

public class DOMParser {
    public static void main(String[] args) {
        try {
            // 创建DOM解析器工厂
            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            // 创建DOM解析器
            DocumentBuilder builder = factory.newDocumentBuilder();
            // 解析XML文件，获取Document对象
            Document document = builder.parse(new File("example.xml"));
            
            // 获取根节点
            Element root = document.getDocumentElement();
            
            // 获取子节点列表
            NodeList nodeList = root.getChildNodes();
            
            // 遍历子节点
            for (int i = 0; i < nodeList.getLength(); i++) {
                Node node = nodeList.item(i);
                if (node.getNodeType() == Node.ELEMENT_NODE) {
                    // 处理子节点
                    System.out.println("子节点名称：" + node.getNodeName());
                    System.out.println("子节点值：" + node.getTextContent());
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import org.xml.sax.*;
import org.xml.sax.helpers.*;
import javax.xml.parsers.*;
import java.io.*;

public class SAXParser {
    public static void main(String[] args) {
        try {
            // 创建SAX解析器工厂
            SAXParserFactory factory = SAXParserFactory.newInstance();
            // 创建SAX解析器
            javax.xml.parsers.SAXParser parser = factory.newSAXParser();
            // 创建事件处理器
            DefaultHandler handler = new DefaultHandler() {
                boolean isChildNode = false;
                
                @Override
                public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
                    if (qName.equalsIgnoreCase("child")) {
                        isChildNode = true;
                    }
                }
                
                @Override
                public void characters(char[] ch, int start, int length) throws SAXException {
                    if (isChildNode) {
                        // 处理子节点
                        System.out.println("子节点值：" + new String(ch, start, length));
                    }
                }
                
                @Override
                public void endElement(String uri, String localName, String qName) throws SAXException {
                    if (qName.equalsIgnoreCase("child")) {
                        isChildNode = false;
                    }
                }
            };
            // 解析XML文件
            parser.parse(new File("example.xml"), handler);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}