在java中处理XML枚举类型

public enum Color {
    RED,
    GREEN,
    BLUE
}

import javax.xml.bind.annotation.XmlEnum;
import javax.xml.bind.annotation.XmlEnumValue;

@XmlEnum
public enum Color {
    @XmlEnumValue("red")
    RED,
    @XmlEnumValue("green")
    GREEN,
    @XmlEnumValue("blue")
    BLUE
}

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

public class Main {
    public static void main(String[] args) {
        try {
            File file = new File("example.xml");
            JAXBContext jaxbContext = JAXBContext.newInstance(Color.class);
            Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
            Color color = (Color) jaxbUnmarshaller.unmarshal(file);
            System.out.println(color);
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}