Android 采用pull生成XML数据

/*
有些时候，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();
*/


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<?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

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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 + "]";
}
}

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<?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>

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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);
}
}

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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();
}
}