Pull解析器读取XML文件,及保存数据到xml文件中

来源：互联网发布：淘宝发布产品编辑：程序博客网时间：2024/06/15 04:52
package com.cyh.service;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 android.util.Xml;import com.cyh.domain.Person;public class PersonService {/** * 解析XML Pull破解器方法 * @param xml * @return * @throws Exception */public static List<Person> getPersons(InputStream xml) throws Exception{List<Person> persons = null;Person person = null;//XmlPullParser parser = XmlPullParserFactory.newInstance().newPullParser();XmlPullParser parser = Xml.newPullParser();//为Pull破解器设置要解析的XMLparser.setInput(xml, "UTF-8");int event = parser.getEventType();while(event != XmlPullParser.END_DOCUMENT){switch (event){case XmlPullParser.START_DOCUMENT:persons = new ArrayList<Person>();break;case XmlPullParser.START_TAG:if("person".equals(parser.getName())){person = new Person();int id = Integer.parseInt(parser.getAttributeValue(0));person.setId(id);}if("name".equals(parser.getName())){String name = parser.nextText();person.setName(name);}if("age".equals(parser.getName())){int age = Integer.parseInt(parser.nextText());person.setAge(age);}break;case XmlPullParser.END_TAG:if("person".equals(parser.getName())){persons.add(person);person = null;}break;}event = parser.next();}return persons;}/** * 保存数据到XML文件中 * @param list * @param out * @throws Exception */public static void save(List<Person> list, OutputStream out) throws Exception{XmlSerializer serializer = Xml.newSerializer();serializer.setOutput(out, "UTF-8");serializer.startDocument("UTF-8", true);//文档开始serializer.startTag(null, "persons");for(Person p:list){serializer.startTag(null, "person");serializer.attribute(null, "id", p.getId().toString());serializer.startTag(null, "name");serializer.text(p.getName());serializer.endTag(null, "name");serializer.startTag(null, "age");serializer.text(p.getAge().toString());serializer.endTag(null, "age");serializer.endTag(null, "person");}serializer.endTag(null, "persons");serializer.endDocument();//文档结束out.flush();out.close();}}
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