【Java】之 数据转换XML格式

一、将数据转换为XML格式

（1）导包

使用的IDE：IDEA16

创建lib，添加进路径

xom包：http://www.xom.nu/

（2）coding

（3）输出

二、从XML文件中反序列化Person对象

（1）coding

注意：会报异常

　　因为：从xom-1.2.10.jar开始使用file协议，所以添加全路径，如下图

（2）输出

package Test;

import nu.xom.Document;
import nu.xom.Element;
import nu.xom.Serializer;

import javax.print.Doc;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.List;

/**
 * Created by donal on 2017/2/12.
 */
public class Person
    private String first, last;
    public Person(String first, String last){
        this.first = first;
        this.last = last;
    }

    //Produce an XML Element from this Person object:
    public Element getXML(){
        Element person = new Element("person");
        Element firstName = new Element("first");
        firstName.appendChild(first);
        Element lastName = new Element("last");
        lastName.appendChild(last);
        person.appendChild(firstName);
        person.appendChild(lastName);
        return person;
    }

    //Constructor to restore a Person from an XML Element:
    public Person(Element person){
        first = person.getFirstChildElement("first").getValue();
        last = person.getFirstChildElement("last").getValue();
    }

    public String toString(){
        return first + " " + last;
    }

    //Make it human-readable:
    public static void format(OutputStream os, Document doc) throws Exception{
        Serializer serializer = new Serializer(os, "ISO-8859-1");
        serializer.setIndent(4);
        serializer.setMaxLength(60);
        serializer.write(doc);
        serializer.flush();
    }

    public static void main(String []args) throws Exception {
        List<Person> people = Arrays.asList(
                new Person("Dr.Bumsen", "Honeydew"),
                new Person("Gonzo", "The Great"),
                new Person("Phillip J.", "Fly")
        );

        System.out.println(people);
        Element root = new Element("people");
        for (Person p : people){
            root.appendChild(p.getXML());
        }
        Document doc = new Document(root);
        format(System.out, doc);
        format(new BufferedOutputStream(new FileOutputStream(
                "People.xml"

package Test;

import nu.xom.Builder;
import nu.xom.Document;
import nu.xom.Element;
import nu.xom.Elements;

import java.util.ArrayList;

/**
 * Created by donal on 2017/2/12.
 */
public class People extends ArrayList<Person>{
    public People(String fileName) throws Exception{
        Document doc = new Builder().build(fileName);
        Elements elements = doc.getRootElement().getChildElements();
        for (int i = 0; i < elements.size(); ++i){
            add(new Person(elements.get(i)));
        }
    }
    public static void main(String []args) throws Exception {
        People p = new People("file:\\D:\\tools\\Code\\Java\\IDEA\\JavaSE\\XMLTest\\People.xml");
        System.out.println(p);
    }
}