java中的xml与实体类之间的映射

实体类:

package xml;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class User {
    String name;
    String english_name;
    String age;
    String sex;
    String address;
    String description;
    public User(){}
    
    public User(String name, String english_name, String age, String sex,
            String address, String description) {
        this.name=name;
        this.english_name=english_name;
        this.age=age;
        this.sex=sex;
        this.address=address;
        this.description=description;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getEnglish_name() {
        return english_name;
    }
    public void setEnglish_name(String english_name) {
        this.english_name = english_name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }
    public String getDescription() {
        return description;
    }
    public void setDescription(String description) {
        this.description = description;
    }
    
    
    
}

一.java对象转化成xml文件

package xml;

import java.io.File;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;

/**
 * 将类映射成xml
 * @author Administrator
 *
 */
public class Demo1 {
    public static void main(String[] args) {
        //创建xml对象,将他保存在指定位置
        File file = new File("D:\javaItem\xml\src\xml\1.xml");
        //申明一个JAXBContext对象
        JAXBContext jaxbContext;
        try {
            //指定映射的类,创建JAXBContext对象的上下文
            jaxbContext = JAXBContext.newInstance(User.class);
            //创建转化对象Marshaller
            Marshaller m = jaxbContext.createMarshaller();
            //创建xml文件中的数据
            User user = new User("张三", "zhangsnan", "30", "男", "安徽合肥", "软件工程师");
            //将Java类中的User对象转化到XML
            m.marshal(user, file);
            System.out.println("转化完成");
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}

二.xml文件转化为java对象

package xml;

import java.io.File;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;



public class Demo2 {
    public static void main(String[] args) {
        File file=new File("D:\javaItem\xml\src\xml\1.xml");
        JAXBContext jaxbContext;
        try {
            jaxbContext=JAXBContext.newInstance(User.class);
            Unmarshaller u=jaxbContext.createUnmarshaller();
            User user=(User)u.unmarshal(file);
            System.out.println("姓名:"+user.getName());
            System.out.println("英文名字:"+user.getEnglish_name());
            System.out.println("年龄:"+user.getAge());
            System.out.println("性别:"+user.getSex());
            System.out.println("地址:"+user.getAddress());
            System.out.println("描述:"+user.getDescription());
        } catch (JAXBException e) {
            e.printStackTrace();
        }
    }
}