JAXB学习笔记(四)

然后有人又说，我想给节点加属性怎么办，看下面例子
这里用一种怪异的xml形势来说明怎么处理，至于为什么使用这样的xml格式，实际项目中就会有这种非正常思维的情况，人们总喜欢用节点属性(attributer)值来表示节点值(textValue),而让节点值为空，来达到所谓的结构清晰

Java代码
package cn.uyunsky.blog.xml.demo4;

import java.io.StringReader;
import java.io.StringWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;

/**
* <p>attribute属性值不会加,看这个例子</p>
*/
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Persion {

    private DemoField userid;

    private DemoField username;

    private DemoField birthday;

    public DemoField getUserid() {
        return userid;
    }

    public void setUserid(DemoField userid) {
        this.userid = userid;
    }

    public DemoField getUsername() {
        return username;
    }

    public void setUsername(DemoField username) {
        this.username = username;
    }

    public DemoField getBirthday() {
        return birthday;
    }

    public void setBirthday(DemoField birthday) {
        this.birthday = birthday;
    }

    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append("Persion [userid=");
        builder.append(userid);
        builder.append(", username=");
        builder.append(username);
        builder.append(", birthday=");
        builder.append(birthday);
        builder.append("]");
        return builder.toString();
    }

    public static void main(String[] args) {
        try {
            JAXBContext jaxbContext = JAXBContext.newInstance(Persion.class);
            Persion persion = new Persion();

            DemoField userid = new DemoField();
            userid.setName("userid");
            userid.setValue("112");
            persion.setUserid(userid);

            DemoField username = new DemoField();
            username.setName("username");
            username.setValue("就不告诉你");
            persion.setUsername(username);

            DemoField birthday = new DemoField();
            birthday.setName("birthday");
            birthday.setValue(new SimpleDateFormat("yyyy-MM-dd").format(new Date()));
            persion.setBirthday(birthday);

            Marshaller marshaller = jaxbContext.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

            //换个显示方式
            marshaller.marshal(persion, System.out);

            StringWriter writer = new StringWriter();
            marshaller.marshal(persion, writer);
            String xml = writer.getBuffer().toString();

            Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
            Object bean = unmarshaller.unmarshal(new StringReader(xml));
            System.out.println(bean);

        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }

}
DemoField对象来表示一个节点
Java代码
package cn.uyunsky.blog.xml.demo4;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlValue;

@XmlAccessorType(XmlAccessType.FIELD)
public class DemoField {

    @XmlAttribute
    private String name;

    @XmlValue
    private String value;

    public String getName() {
        return name;
    }

补充：软件开发 , Java ,