使用Java中的命名空间创建XML文档

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

@XmlRootElement
public class Person {
    private String name;
    private int age;

    @XmlElement
    public void setName(String name) {
        this.name = name;
    }

    @XmlElement
    public void setAge(int age) {
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }
}

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

public class JAXBExample {
    public static void main(String[] args) {
        try {
            // 创建JAXB上下文
            JAXBContext jaxbContext = JAXBContext.newInstance(Person.class);

            // 创建Marshaller对象
            Marshaller marshaller = jaxbContext.createMarshaller();

            // 设置是否格式化输出
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

            // 创建Java对象
            Person person = new Person();
            person.setName("张三");
            person.setAge(25);

            // 将Java对象序列化为XML文档
            marshaller.marshal(person, new File("person.xml"));
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import java.io.File;

public class JAXBExample {
    public static void main(String[] args) {
        try {
            // 创建JAXB上下文
            JAXBContext jaxbContext = JAXBContext.newInstance(Person.class);

            // 创建Unmarshaller对象
            Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();

            // 反序列化XML文档为Java对象
            Person person = (Person) unmarshaller.unmarshal(new File("person.xml"));

            // 输出Java对象的属性值
            System.out.println("Name: " + person.getName());
            System.out.println("Age: " + person.getAge());
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}