有没有一种简单的方法将我的XML对象转换回java中的String？

   <groupId>javax.xml.bind</groupId>
   <artifactId>jaxb-api</artifactId>
   <version>2.3.1</version>
</dependency>

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

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

    public Person() {}

    public Person(String name, int age) {
        this.name = name;
        this.age = 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.StringWriter;

public class XmlConverter {
    public static String convertToXml(Person person) {
        String xmlString = null;
        try {
            JAXBContext jaxbContext = JAXBContext.newInstance(Person.class);
            Marshaller marshaller = jaxbContext.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

            StringWriter stringWriter = new StringWriter();
            marshaller.marshal(person, stringWriter);
            xmlString = stringWriter.toString();
        } catch (JAXBException e) {
            e.printStackTrace();
        }

        return xmlString;
    }
}

public static void main(String[] args) {
    Person person = new Person("John Doe", 30);
    String xmlString = XmlConverter.convertToXml(person);
    System.out.println(xmlString);
}

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><person>
    <name>John Doe</name>
    <age>30</age>
</person>