自定义 Jaxb 命名空间 前缀

1. 先下载 JAXB-RI, 确保 jaxb-impl-x.x.x.jar 位于你的classpath下，且优先于JDK的RT.jar
2. 参考使用以下代码：

import java.io.BufferedOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.stream.XMLStreamException;
import javax.xml.transform.TransformerException;

import me.test.persons.Person;
import me.test.persons.Persons;

import com.sun.xml.bind.marshaller.NamespacePrefixMapper;

public class CustomJAXBPrefix {

    public static void main(String[] args) throws Exception {
        marshal();
    }

    public static void marshal() throws JAXBException, XMLStreamException,
            FileNotFoundException, TransformerException {
        // Step 1.
        Persons ps = new Persons();
        Person p = new Person();
        p.setAge(12);
        p.setName("btpka3");
        p.set***("man");
        ps.getPerson().add(p);

        JAXBContext context = JAXBContext.newInstance(Persons.class);
        Marshaller marshaller = context.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.setProperty(Marshaller.JAXB_FRAGMENT, false);
        marshaller.setProperty("com.sun.xml.bind.namespacePrefixMapper",
                new MyNamespacePrefixMapper());

        marshaller.marshal(ps, System.out);
        System.out.println();
    }
    public static class MyNamespacePrefixMapper extends NamespacePrefixMapper {
        @Override
        public String getPreferredPrefix(String namespaceUri,
                String suggestion, boolean requirePrefix) {
            if (requirePrefix) {
                if ("".equals(namespaceUri)) {
                    return "me";
                }
                return suggestion;
            } else {
                return "";
            }
        }
    }
}