（转）Android 采用pull生成XML数据

些时候，我们需要生成一个XML文件，生成XML文件的方法有很多，如：可以只使用一个StringBuilder组拼XML内容，然后把内容写入到文件中；或者使用DOM API生成XML文件，或者也可以使用pull解析器生成XML文件，这里推荐大家使用Pull解析器。 
使用Pull解析器生成一个与itcast.xml文件内容相同的myitcast.xml文件，代码在本页下方备注 
使用代码如下（生成XML文件）： File xmlFile = new File("myitcast.xml");

FileOutputStream outStream = new FileOutputStream(xmlFile); 
OutputStreamWriter outStreamWriter = new OutputStreamWriter(outStream, "UTF-8"); 
BufferedWriter writer = new BufferedWriter(outStreamWriter); 
writeXML(persons, writer); 
writer.flush(); 
writer.close(); 

 如果只想得到生成的xml字符串内容，可以使用StringWriter：

 

StringWriter writer = new StringWriter(); 
writeXML(persons, writer); 
String content = writer.toString(); 
*/  

 

 

//view plaincopy to clipboardprint? 
<?xml version="1.0" encoding="UTF-8"?>  
<persons>  
    <person id="23">  
        <name>zhangsan</name>  
        <age>25</age>  
    </person>  
    <person id="20">  
        <name>lisi</name>  
        <age>28</age>  
    </person>  
</person  

 

 

//view plaincopy to clipboardprint? 
package com.zyq.voo;  
public class Person  
{  
      
    private Integer id;  
    private String name;  
    private Short age;  
      
    public Person()  
    {  
          
    }  
      
    public Person(Integer id, String name, Short age)  
    {  
        super();  
        this.id = id;  
        this.name = name;  
        this.age = age;  
    }  
    public Integer getId()  
    {  
        return id;  
    }  
    public void setId(Integer id)  
    {  
        this.id = id;  
    }  
    public String getName()  
    {  
        return name;  
    }  
    public void setName(String name)  
    {  
        this.name = name;  
    }  
    public Short getAge()  
    {  
        return age;  
    }  
    public void setAge(Short age)  
    {  
        this.age = age;  
    }  
    @Override  
    public String toString()  
    {  
        return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";  
    }  
}  

 

 

view plaincopy to clipboardprint? 
<?xml version="1.0" encoding="utf-8"?>  
<manifest xmlns:android="http://schemas.android.com/apk/res/android"  
      package="com.zyq.xml"  
      android:versionCode="1"  
      android:versionName="1.0">  
    <application android:icon="@drawable/icon" android:label="@string/app_name">  
    <uses-library android:name="android.test.runner" />  
        <activity android:name=".MainActivity"  
                  android:label="@string/app_name">  
            <intent-filter>  
                <action android:name="android.intent.action.MAIN" />  
                <category android:name="android.intent.category.LAUNCHER" />  
            </intent-filter>  
        </activity>  
    </application>  
    <uses-sdk android:minSdkVersion="8" />  
    <instrumentation android:name="android.test.InstrumentationTestRunner"  
    android:targetPackage="com.zyq.xml" android:label="Tests for My App" />  
      
</manifest>   

 

 

view plaincopy to clipboardprint? 
package com.zyq.xml;  
import java.io.File;  
import java.io.FileOutputStream;  
import java.io.InputStream;  
import java.util.ArrayList;  
import java.util.List;  
import com.zyq.service.DOMPersonService;  
import com.zyq.service.PullBuildXMLService;  
import com.zyq.service.PullPersonService;  
import com.zyq.service.SAXPersonService;  
import com.zyq.voo.Person;  
import android.test.AndroidTestCase;  
import android.util.Log;  
public class PersonServiceTest extends AndroidTestCase  
{  
    private static final String TAG="PersonServiceTest";  
    /** 
     * 测试 SAX解析XML数据 
     * @throws Throwable 
     */  
    public void testSAX() throws Throwable  
    {  
        SAXPersonService personService=new SAXPersonService();  
        InputStream inputStream=this.getClass().getClassLoader().getResourceAsStream("person.xml");  
        List<Person> persons=personService.getPersons(inputStream);  
        for(Person person : persons)  
        {  
            Log.i(TAG, person.toString());  
        }  
    }  
    /** 
     * 测试 DOM解析XML数据 
     * @throws Throwable 
     */  
    public void testDOM() throws Throwable  
    {  
        DOMPersonService personService=new DOMPersonService();  
        InputStream inputStream=this.getClass().getClassLoader().getResourceAsStream("person.xml");  
        List<Person> persons=personService.getPersons(inputStream);  
        for(Person person : persons)  
        {  
            Log.i(TAG, person.toString());  
        }  
    }  
    /** 
     * 测试 PULL解析XML数据 
     * @throws Throwable 
     */  
    public void testPull() throws Throwable  
    {  
        PullPersonService personService=new PullPersonService();  
        InputStream inputStream=this.getClass().getClassLoader().getResourceAsStream("person.xml");  
        List<Person> persons=personService.getPersons(inputStream);  
        for(Person person : persons)  
        {  
            Log.i(TAG, person.toString());  
        }  
    }  
      
    public void testPullBuildXML() throws Throwable  
    {  
        List<Person> persons=new ArrayList<Person>();  
        persons.add(new Person(1001,"张三",(short)30));  
        persons.add(new Person(1002,"李四",(short)18));  
        persons.add(new Person(1003,"王二麻子",(short)21));  
        persons.add(new Person(1004,"朱大",(short)25));  
        persons.add(new Person(1005,"林一",(short)20));  
          
        File file=new File(this.getContext().getFilesDir(),"zyq.xml");  
        FileOutputStream outputStream=new FileOutputStream(file);  
        PullBuildXMLService service=new PullBuildXMLService();  
        service.buildXML(persons, outputStream);  
    }  
}  

view plaincopy to clipboardprint? 
package com.zyq.service;  
import java.io.OutputStream;  
import java.util.List;  
import org.xmlpull.v1.XmlSerializer;  
import android.util.Xml;  
import com.zyq.voo.Person;  
/** 
* 采用PULL  生成XML数据 
* @author Administrator 
* 
*/  
public class PullBuildXMLService  
{  
    /** 
     *  
     * @param persons 
     * @param outputStream 
     * @throws Exception 
     */  
    public void buildXML(List<Person> persons,OutputStream outputStream) throws Exception  
    {  
        XmlSerializer serializer=Xml.newSerializer();  
        serializer.setOutput(outputStream, "utf-8");  
          
        serializer.startDocument("utf-8", true);  
        serializer.startTag(null, "persons");  
          
        for(Person person:persons)  
        {  
            serializer.startTag(null, "person");  
            serializer.attribute(null, "id", person.getId().toString());  
              
            serializer.startTag(null, "name");  
            serializer.text(person.getName());  
            serializer.endTag(null, "name");  
              
            serializer.startTag(null, "age");  
            serializer.text(person.getAge().toString());  
            serializer.endTag(null, "age");  
              
            serializer.endTag(null, "person");  
        }  
          
        serializer.endTag(null, "persons");  
        serializer.endDocument();  
        outputStream.close();  
    }  
}