Android之xml解析2,3

package com.hnust.util;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.Node;import org.w3c.dom.NodeList;import android.util.Log;import com.hnust.pojo.Person;/*** * dom解析的工具类 * @author zzg * */public class DOMXMLService {private final static String TAG="DOMXMLService";public static List<Person> getPerson(InputStream is) throws Exception{List<Person> persons=new ArrayList<Person>();//获取dom解析的工厂实例DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();DocumentBuilder builder=factory.newDocumentBuilder();Document document=builder.parse(is);//返回文档的根元素Element root=document.getDocumentElement();//获取person节点的元素NodeList personNode=root.getElementsByTagName("person");for(int i=0;i<personNode.getLength();i++){Element personElement = (Element) personNode.item(i);int id=new Integer(personElement.getAttribute("id"));Log.i(TAG, id+"");Person person=new Person();person.setId(id);NodeList childNodes=personElement.getChildNodes();for(int j=0;j<childNodes.getLength();j++){if(childNodes.item(j).getNodeType()==Node.ELEMENT_NODE){if("name".equals(childNodes.item(j).getNodeName())){String name=childNodes.item(j).getFirstChild().getNodeValue();Log.i(TAG, name);person.setName(name);}else if("age".equals(childNodes.item(j).getNodeName())){String age=childNodes.item(j).getFirstChild().getNodeValue();Log.i(TAG, age);person.setAge(Integer.parseInt(age));}}}persons.add(person);}is.close();return persons;}}

package com.hnust.util;import java.io.IOException;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.XmlPullParserException;import org.xmlpull.v1.XmlSerializer;import android.util.Xml;import com.hnust.pojo.Person;/** * pull解析xml工具类 * pull解析器为Android内置的 * @author zzg * */public class PullXMLService {public static List<Person> getPerson(InputStream is) throws  Exception{Person person=null;List<Person> persons=null;XmlPullParser pullParser=Xml.newPullParser();pullParser.setInput(is,"UTF-8");//触发时间类型int event=pullParser.getEventType();while(event!=XmlPullParser.END_DOCUMENT){//跳出循环的条件是结束解析switch (event) {case XmlPullParser.START_DOCUMENT://开始解析persons=new ArrayList<Person>();break;case XmlPullParser.START_TAG://开始元素if("person".equals(pullParser.getName())){int id=Integer.parseInt(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(Integer.parseInt(pullParser.nextText()));}}break;case XmlPullParser.END_TAG:if("person".equals(pullParser.getName())){persons.add(person);person=null;}break;default:break;}event=pullParser.next();}return persons;}/*** * pull生成xml * @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",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, "name");serializer.endTag(null, "person");}serializer.endTag(null,"persons");serializer.endDocument();out.flush();out.close();}}

AssetManager asset=getAssets();InputStream is=asset.open("person.xml");List<Person> persons=null;StringBuilder sb=new StringBuilder();switch(v.getId()){case R.id.sax_button://sax解析xml文件SAXForHandler handler=new SAXForHandler();SAXParserFactory spf=SAXParserFactory.newInstance();SAXParser parser=spf.newSAXParser();parser.parse(is, handler);persons=handler.getPerson();for(Person person:persons){sb.append(person.toString());}Toast.makeText(this, sb,1).show();break;case R.id.pull_button:persons=PullXMLService.getPerson(is);if(persons.size()==0){Toast.makeText(this, "persons is null",1).show();}for(Person person:persons){sb.append(person.toString());}Toast.makeText(this, sb,1).show();break;case R.id.dom_button://dom解析xml文件persons=DOMXMLService.getPerson(is);if(persons.size()==0){Toast.makeText(this, "persons is null",1).show();}for(Person person:persons){sb.append(person.toString());}Toast.makeText(this, sb,1).show();break;