前言：對xstream不理解的請看：

android XMl 解析神奇xstream 一： 解析android項目中 asset 文件夾 下的 aa.xml 文件

android XMl 解析神奇xstream 二： 把對象轉(zhuǎn)換成xml

android XMl 解析神奇xstream 三： 把復(fù)雜對象轉(zhuǎn)換成 xml

android XMl 解析神奇xstream 四： 將復(fù)雜的xml文件解析為對象

android XMl 解析神奇xstream 五： 把復(fù)雜對象轉(zhuǎn)換成 xml ,并寫入SD卡中的xml文件

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1、創(chuàng)建JavaBeen

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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;} }

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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;} }

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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;}}

2、主要方法

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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 {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView( R.layout.activity_main );XStream xstream = new XStream() ;List<Product> root = getList() ;//將ListBean中的集合設(shè)置空元素，即不顯示集合元素標(biāo)簽xstream.addImplicitCollection( ListBean.class, "root");xstream.autodetectAnnotations(true);//設(shè)置別名xstream.alias( "product", Product.class );//將name設(shè)置為父類（Student）的元素的屬性xstream.useAttributeFor( Product.class, "name" );//把list集合轉(zhuǎn)換成Xml字符串String xmlString = xstream.toXML( root ) ;//把Xml字符串寫入SD卡Xml文件XstreamUtil xstreamUtil = new XstreamUtil() ;xstreamUtil.writeToXml( this , xmlString ) ;//把Xml字符串轉(zhuǎn)化成list集合List<Product> list = new ArrayList<Product>() ;list = (List<Product>) xstream.fromXML( xmlString ) ;System.out.println("sss"+ formatXml( xmlString ) );}/*** 得到數(shù)據(jù)* @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;}} }

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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字符串寫入ＳＤ卡文件* @param context* @param str　　xml字符串*/public void writeToXml(Context context, String str ){ //獲取文件路徑String SDPATH = Environment.getExternalStorageDirectory() + "/myfile1.xml/" ;//創(chuàng)建文件File file = new File( SDPATH ) ;if( !file.exists() ){try {file.createNewFile() ;} catch (IOException e) {e.printStackTrace();} }//寫入數(shù)據(jù)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(); }}} //設(shè)置監(jiān)聽器void setXStreamLister( XcallBack xcallBack ){this.xcallBack = xcallBack ;}}interface XcallBack{/*** 寫入成功*/void success() ; /*** 寫入失敗*/void fail() ; }

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3、運行結(jié)果

<list>
? <product name="jhon">
??? <age>30</age>
??? <person>
????? <pAge>36</pAge>
????? <pName>saliy</pName>
??? </person>
? </product>
? <product name="jhon02">
??? <age>3002</age>
??? <person>
????? <pAge>3602</pAge>
????? <pName>saliy02</pName>
??? </person>
? </product>
</list>

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總結(jié)

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