package com.android10;

public class Person {

    String pName ;

    String pAge  ;

    public String getpName() {

        return pName;

    }

    public void setpName(String pName) {

        this.pName = pName;

    }

    public String getpAge() {

        return pAge;

    }

    public void setpAge(String pAge) {

        this.pAge = pAge;

    }

}

package com.android10;

public class Product {

    private String name ;

    private String age  ;

    private Person person ;

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getAge() {

        return age;

    }

    public void setAge(String age) {

        this.age = age;

    }

    public Person getPerson() {

        return person;

    }

    public void setPerson(Person person) {

        this.person = person;

    }

}

package com.android10;

import java.util.List;

public class ListBean {

    private List<Product> root ;

    public List<Product> getRoot() {

        return root;

    }

    public void setRoot(List<Product> root) {

        this.root = root;

    }

}

package com.android10;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.util.ArrayList;

import java.util.List;

import javax.xml.transform.OutputKeys;

import javax.xml.transform.Source;

import javax.xml.transform.Transformer;

import javax.xml.transform.sax.SAXSource;

import javax.xml.transform.sax.SAXTransformerFactory;

import javax.xml.transform.stream.StreamResult;

import org.xml.sax.InputSource;

import android.app.Activity;

import android.os.Bundle;

import com.thoughtworks.xstream.XStream;

public class MainActivity extends Activity {

    @Override

    public void onCreate(Bundle savedInstanceState)  {

        super.onCreate(savedInstanceState);

        setContentView( R.layout.activity_main );

        XStream xstream = new XStream() ;

        List<Product> root = getList() ;

        //将ListBean中的集合设置空元素，即不显示集合元素标签

        xstream.addImplicitCollection( ListBean.class, "root");

        xstream.autodetectAnnotations(true);

        //设置别名

        xstream.alias( "product", Product.class );

        //将name设置为父类（Student）的元素的属性

        xstream.useAttributeFor( Product.class, "name" );

        //把list集合转换成Xml字符串

        String xmlString =  xstream.toXML(  root ) ;

        //把Xml字符串写入SD卡Xml文件

        XstreamUtil xstreamUtil = new XstreamUtil() ;

        xstreamUtil.writeToXml( this ,  xmlString ) ;

        //把Xml字符串转化成list集合

        List<Product> list = new ArrayList<Product>() ;

        list =  (List<Product>) xstream.fromXML( xmlString ) ;

        System.out.println("sss"+  formatXml( xmlString ) );

    }

    /**

     * 得到数据

     * @return

     */

    private List<Product>  getList(){

        Person person1 = new Person() ;

        person1.setpName( "saliy" ) ;

        person1.setpAge( "36" );

        Product product1 = new Product() ;

        product1.setName( "jhon" ) ;

        product1.setAge( "30" );

        product1.setPerson( person1 );

        Person person2 = new Person() ;

        person2.setpName( "saliy02" ) ;

        person2.setpAge( "3602" );

        Product product2 = new Product() ;

        product2.setName( "jhon02" ) ;

        product2.setAge( "3002" );

        product2.setPerson( person2 );

        List<Product> root = new ArrayList<Product>() ;

        root.add( product1 ) ;

        root.add( product2 ) ;

        return root ;

    }

    /**

     * 格式化XML字符串

     * @param xml

     * @return

     */

    public static String formatXml(String xml){

        try{

            Transformer serializer= SAXTransformerFactory.newInstance().newTransformer();

            serializer.setOutputProperty(OutputKeys.INDENT, "yes");

            serializer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

            Source xmlSource=new SAXSource(new InputSource(new ByteArrayInputStream(xml.getBytes())));

            StreamResult res =  new StreamResult(new ByteArrayOutputStream());

            serializer.transform(xmlSource, res);

            return new String(((ByteArrayOutputStream)res.getOutputStream()).toByteArray());

        }catch(Exception e){

            return xml;

        }

    }

}

package com.android10;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStreamWriter;

import android.content.Context;

import android.os.Environment;

public class XstreamUtil {

    XcallBack xcallBack ;

    /**

     * 把xml字符串写入ＳＤ卡文件

     * @param context

     * @param str　　xml字符串

     */

    public void writeToXml(Context context, String str ){  

        //获取文件路径

        String SDPATH = Environment.getExternalStorageDirectory()  + "/myfile1.xml/" ;

        //创建文件

        File file = new File( SDPATH ) ;

        if( !file.exists() ){

            try {

                file.createNewFile() ;

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

        //写入数据

        try {

            FileOutputStream out = new FileOutputStream( file ) ;

            OutputStreamWriter outw = new OutputStreamWriter(out);

            try {

                outw.write(str);

                outw.close();

                out.close();

                if( xcallBack != null ){

                    xcallBack.success();

                }

            } catch (IOException e) {

                if( xcallBack != null ){

                    xcallBack.fail();

                }

            }

        } catch (FileNotFoundException e1) {

            e1.printStackTrace();

            if( xcallBack != null ){

                xcallBack.fail();

            }

        }

    } 

    //设置监听器

    void setXStreamLister( XcallBack xcallBack ){

        this.xcallBack = xcallBack ;

    }

}

interface XcallBack{

    /**

     * 写入成功

     */

    void success() ;  

    /**

     * 写入失败

     */

    void fail() ;

}