Android XmlPullParser 方式解析 Xml 文档

xml 文件格式

<?xml version="1.0" encoding="UTF-8"?><persons> <person id="1"> <name>张三</name> <age>22</age> </person> <person id="2"> <name>李四</name> <age>20</age> </person></persons>

XmlPullParser 方式解析 xml 文件

import java.io.InputStream;import java.io.OutputStream;import java.util.ArrayList;import java.util.List;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlSerializer;import com.eboy.domain.Person;import android.util.Xml; public class PersonService { public static List<Person> getPersons(InputStream xml) throws Exception { List<Person> persons = null; Person person = null; XmlPullParser pullParser = Xml.newPullParser(); pullParser.setInput(xml, "UTF-8"); // 为Pull解释器设置要解析的XML数据 int event = pullParser.getEventType(); while (event != XmlPullParser.END_DOCUMENT) { switch (event) { case XmlPullParser.START_DOCUMENT: persons = 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 ("name".equals(pullParser.getName())) { String name = pullParser.nextText(); person.setName(name); } if ("age".equals(pullParser.getName())) { int age = Integer.valueOf(pullParser.nextText()); person.setAge(age); } break; case XmlPullParser.END_TAG: if ("person".equals(pullParser.getName())) { persons.add(person); person = null; } break; } event = pullParser.next(); } return persons; } /** * 保存数据到xml文件中 * @param persons * @param out * @throws Exception */ public static void save(List<Person> persons, OutputStream out) throws Exception { XmlSerializer serializer = Xml.newSerializer(); serializer.setOutput(out, "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().toString()); 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(); out.flush(); out.close(); }}

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