JAXB 可以处理 java.time 对象吗

JAXB 是 Java Architecture for XML Binding 的缩写，它是 Java 提供的一种用于将 Java 对象与 XML 进行互相转换的技术。JAXB 可以方便地将 Java 对象序列化为 XML，也可以将 XML 反序列化为 Java 对象。但是，JAXB 在处理 java.time 对象方面存在一些限制。

java
import javax.xml.bind.annotation.adapters.XmlAdapter;
import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;
public class LocalDateAdapter extends XmlAdapter {
    private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ISO_DATE;
    @Override
    public LocalDate unmarshal(String dateString) throws Exception {
        return LocalDate.parse(dateString, DATE_FORMATTER);
    }
    @Override
    public String marshal(LocalDate localDate) throws Exception {
        return localDate.format(DATE_FORMATTER);
    }
}
public class JavaTimeExample {
    public static void main(String[] args) throws Exception {
        // 创建一个包含 java.time 对象的 Java 对象
        MyObject myObject = new MyObject();
        myObject.setDate(LocalDate.now());
        // 将 Java 对象序列化为 XML
        JAXBContext jaxbContext = JAXBContext.newInstance(MyObject.class);
        Marshaller marshaller = jaxbContext.createMarshaller();
        marshaller.setAdapter(new LocalDateAdapter());
        marshaller.marshal(myObject, System.out);
        // 将 XML 反序列化为 Java 对象
        Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
        unmarshaller.setAdapter(new LocalDateAdapter());
        MyObject unmarshalledObject = (MyObject) unmarshaller.unmarshal(new File("myObject.xml"));
        System.out.println(unmarshalledObject.getDate());
    }
}
public class MyObject {
    private LocalDate date;
    public LocalDate getDate() {
        return date;
    }
    public void setDate(LocalDate date) {
        this.date = date;
    }
}