使用java创建XML文件

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class CreateXML {
    public static void main(String[] args) {
        try {
            // 创建DocumentBuilderFactory实例
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
            Document doc = dBuilder.newDocument();

            // 创建根元素
            Element rootElement = doc.createElement("root");
            doc.appendChild(rootElement);

            // 创建子元素
            Element childElement = doc.createElement("child");
            rootElement.appendChild(childElement);

            // 设置子元素的属性和值
            childElement.setAttribute("attribute", "value");
            childElement.setTextContent("Hello World!");

            // 将DOM树写入XML文件
            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();
            DOMSource source = new DOMSource(doc);
            StreamResult result = new StreamResult(new File("output.xml"));
            transformer.transform(source, result);

            System.out.println("XML文件创建成功！");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import java.io.File;

public class CreateXML {
    public static void main(String[] args) {
        try {
            // 创建JAXBContext实例
            JAXBContext jaxbContext = JAXBContext.newInstance(Root.class);
            Marshaller marshaller = jaxbContext.createMarshaller();

            // 设置Marshaller的属性
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

            // 创建根元素对象
            Root root = new Root();
            root.setChild(new Child("value", "Hello World!"));

            // 将根元素对象写入XML文件
            marshaller.marshal(root, new File("output.xml"));

            System.out.println("XML文件创建成功！");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
class Root {
    private Child child;

    public Child getChild() {
        return child;
    }

    public void setChild(Child child) {
        this.child = child;
    }
}

class Child {
    private String attribute;
    private String value;

    public Child() {}

    public Child(String attribute, String value) {
        this.attribute = attribute;
        this.value = value;
    }

    @XmlAttribute
    public String getAttribute() {
        return attribute;
    }

    public void setAttribute(String attribute) {
        this.attribute = attribute;
    }

    @XmlElement
    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}