XMLwork - master - Letta21/HWAbstrInheritance

XMLwork
158 строк6 KB
Letta21
create XMLwork
09 янв 2026, 19:25
09 янв 2026, 19:251fbf794
import org.w3c.dom.*;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.File;
import java.io.IOException;

public class XMLMain {

    public static void main(String[] args) {
        // 1. Создаем фабрику и строителя документа
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = null;
        try {
            builder = factory.newDocumentBuilder();
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
            return;
        }

        // 2. Парсим файл
        Document doc = null;
        try {
            doc = builder.parse(new File("company.xml"));
        } catch (SAXException | IOException e) {
            e.printStackTrace();
            return;
        }

        // 3. Получаем корневой элемент
        Node root = doc.getDocumentElement();
        System.out.println("Корневой элемент: " + root.getNodeName());

        // 4. Запускаем рекурсивный обход, начиная с корня
        read(root);
    }

    // Рекурсивный метод для обхода узлов
    private static void read(Node node) {
        NodeList nodeList = node.getChildNodes();

        for (int i = 0; i < nodeList.getLength(); i++) {
            Node node_ = nodeList.item(i);

            // Проверяем, что узел является ЭЛЕМЕНТОМ (т.е. тегом, а не пробелом или текстом)
            if (Node.ELEMENT_NODE == node_.getNodeType()) {
                System.out.println("Текущий узел: " + node_.getNodeName());

                Element element = (Element) node_;
                NamedNodeMap map = element.getAttributes();

                // Вывод атрибутов текущего узла
                for (int a = 0; a < map.getLength(); a++) {
                    String attrName = map.item(a).getNodeName();
                    String attrValue = map.item(a).getNodeValue();
                    System.out.println("Атрибут: " + attrName + "; значение: " + attrValue);
                }

                // Рекурсивный вызов для дочерних элементов
                read(node_);
            }
        }
        // Создание и запись XML документа в файл

        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = null;
        try {
            builder = factory.newDocumentBuilder();
        } catch (ParserConfigurationException e) {
            throw new RuntimeException(e);
        }
        Document document = builder.newDocument();
        //Содержимое файла:
        Element root = document.createElement("root");
        document.appendChild(root);
        Element company = document.createElement("company");
        root.appendChild(company);
        Element equipment = document.createElement("equipment");
        company.appendChild(equipment);
        Element staff = document.createElement("staff");
        company.appendChild(staff);
        Element employee = document.createElement("employee");
        employee.setAttribute("id", "3");
        employee.setAttribute("firstname", "Nikita");
        employee.setAttribute("lastname", "Shumskii");
        staff.appendChild(employee);
        Element tool = document.createElement("tool");
        tool.appendChild(document.createTextNode("123456"));
        employee.appendChild(tool);
/* <?xml version="1.0" encoding="UTF-8"
        standalone="no"?>
                <root>
                <company>
                <equipment/>
                <staff>
                <employee firstname="Nikita" id="3"
        lastname="Shumskii">
                <tool>123456</tool>
                </employee>
                </staff>
                </company>
                </root>*/
        DOMSource domSource = new DOMSource(document);
        StreamResult streamResult = new StreamResult(new File("new_company.xml"));
        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = null;
        try {
            transformer = transformerFactory.newTransformer();
        } catch (TransformerConfigurationException e) {
            throw new RuntimeException(e);
        }
        try {
            transformer.transform(domSource, streamResult);
        } catch (TransformerException e) {
            throw new RuntimeException(e);
        }
//Редактирование XML документа
      /*  DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document doc = builder.parse(new File("company.xml"));
        NodeList nodeList = doc.getElementsByTagName("employee");*/
        for (int i = 0; i < nodeList.getLength(); i++) {
            node = nodeList.item(i);
            if (Node.ELEMENT_NODE == node.getNodeType()) {
                Element element = (Element) node;
                if (Node.ELEMENT_NODE == node.getNodeType()) {
                    element = (Element) node;
                    if (element.getAttribute("id").equals("2")) {
                        element.getElementsByTagName("tool").item(0).setTextContent("124562");
                    }
                }
            }
        }
        domSource = new DOMSource(document);
        streamResult = new StreamResult(new File("company.xml"));
        transformerFactory = TransformerFactory.newInstance();
        try {
            transformer = transformerFactory.newTransformer();
        } catch (TransformerConfigurationException e) {
            throw new RuntimeException(e);
        }
        try {
            transformer.transform(domSource, streamResult);
        } catch (TransformerException e) {
            throw new RuntimeException(e);
        }


    }
}