pull解析器解析 生成 xml文件

public class Persion {
//persion里面应该具有哪些属性，要根据xml的内容来定
private Integer id;
private String name;
private Integer 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 Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public String toString() {
return "Persion [id=" + id + ", name=" + name + ", age=" + age + "]";
}
public Persion(Integer id, String name, Integer age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
public Persion(){}

}

public class Persionservice{
public static List<Persion> getPersions(InputStream xml) throws Exception{
List<Persion> persons = null;
Persion person = null;
//初始化pull解析器
XmlPullParser pullParser = Xml.newPullParser();

//为pull解析器设置要解析的xml数据
pullParser.setInput(xml, "UTF-8");
//获得事件
int event = pullParser.getEventType();
while (event != pullParser.END_DOCUMENT) {
switch (event) {
case XmlPullParser.START_DOCUMENT:
//初始化persion
persons = new ArrayList<Persion>();
break;

case XmlPullParser.START_TAG:
if ("persion".equals(pullParser.getName())) {
int id = new Integer(pullParser.getAttributeValue(0));
person = new Persion();
person.setId(id);}

if ("name".equals(pullParser.getName())) {
String name = pullParser.nextText();
person.setName(name);
}
if ("age".equals(pullParser.getName())) {
int age = new Integer(pullParser.nextText());
person.setAge(age);

}
break;

//判断最后节点是否为persion，如果是，则将persion添加到list中去
case XmlPullParser.END_TAG:
if ("persion".equals(pullParser.getName())) {
persons.add(person);
person = null;
}

break;

}
event = pullParser.next();

}
return persons;

}

public static void save(List<Persion> persions,OutputStream out) throws Exception{

XmlSerializer serializer = Xml.newSerializer();
serializer.setOutput(out, "UTF-8");
serializer.startDocument("UTF-8", true);

serializer.startTag(null, "persion");

for (Persion persion :persions) {
serializer.startTag(null, "persion");
//属性
serializer.attribute(null, "id", persion.getId().toString());

//子节点
serializer.startTag(null, "name");
serializer.text(persion.getName());
serializer.endTag(null, "name");

serializer.startTag(null, "age");
serializer.text(persion.getAge().toString());
serializer.endTag(null, "age");

}
serializer.endTag(null, "persion");
serializer.endDocument();

//刷新后关闭输出流

out.flush();
out.close();

}