Pull解析和生成XML

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1.解析

Pull解析器只有一个重要的方法next()，它的事件也只有5个（START_DOCUMENT，START_TAG，TEXT，END_TAG，END_DOCUMENT）解析方法类似于SAX。

代码如下：

public class PullPersonService {public static List<Person> getPersons(InputStream inputStream) throws Exception{Person person = null;List<Person> list = null;XmlPullParser pullParser = Xml.newPullParser();pullParser.setInput(inputStream, "UTF-8");int event = pullParser.getEventType();//触发第一个事件while (event != XmlPullParser.END_DOCUMENT) {switch (event) {case XmlPullParser.START_DOCUMENT:list = new ArrayList<Person>();break;case XmlPullParser.START_TAG:if("person".equals(pullParser.getName())){int id = Integer.valueOf(pullParser.getAttributeValue(0));person = new Person();person.setId(id);}if(person != null){if("name".equals(pullParser.getName())){person.setName(pullParser.nextText());}if("age".equals(pullParser.getName())){person.setAge(new Short(pullParser.nextText()));Log.i("TAG", person.toString());}}break;case XmlPullParser.END_TAG:if("person".equals(pullParser.getName())){list.add(person);person = null;}break;}event = pullParser.next();}return list;}}

2.生成

public static void save(List<Person> list, OutputStream outputStream) throws Exception{XmlSerializer serializer = Xml.newSerializer();//对象序列化serializer.setOutput(outputStream, "UTF-8");serializer.startDocument("UTF-8", true);serializer.startTag(null, "persons");for (Person person : list) {serializer.startTag(null, "person");serializer.attribute(null, "id", String.valueOf(person.getId()));serializer.startTag(null, "name");serializer.text(person.getName());serializer.endTag(null, "name");serializer.startTag(null, "age");serializer.text(String.valueOf(person.getAge()));serializer.endTag(null, "age");serializer.endTag(null, "person");}serializer.endTag(null, "persons");serializer.endDocument();outputStream.flush();outputStream.close();}

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