android SAX 解析XML檔案

來源:互聯網
上載者:User

我就直接上代碼了

try{String systemId="<?xml version=\"1.0\" encoding=\"utf-8\"?><student><name>張譯成</name><age>22</age><address>湖北省</address></student>";SAXParserFactory factory=SAXParserFactory.newInstance();SAXParser parser=factory.newSAXParser();XMLReader reader=parser.getXMLReader();reader.setContentHandler(new MyHandler(this));byte []bb=systemId.getBytes();ByteArrayInputStream bais=new ByteArrayInputStream(bb);InputSource in=new InputSource(bais);reader.parse(in);} catch (Exception e) {e.printStackTrace();}

在MyHanlder中的代碼是

package com.zhycheng;import org.xml.sax.Attributes;import org.xml.sax.SAXException;import org.xml.sax.helpers.DefaultHandler;import android.app.Activity;import android.widget.Toast;public class MyHandler extends DefaultHandler{String tagname=null;Activity s=null;public MyHandler(Activity d){this.s=d;}@Overridepublic void characters(char[] ch, int start, int length)throws SAXException {// TODO Auto-generated method stubif("age".equals(tagname)){String s=new String(ch,start,length);Toast.makeText(this.s, s, Toast.LENGTH_SHORT).show();}super.characters(ch, start, length);}@Overridepublic void endDocument() throws SAXException {// TODO Auto-generated method stubsuper.endDocument();tagname=null;Toast.makeText(s, "endDocument", Toast.LENGTH_SHORT).show();System.out.println("endDocument");}@Overridepublic void endElement(String uri, String localName, String qName)throws SAXException {// TODO Auto-generated method stubsuper.endElement(uri, localName, qName);}@Overridepublic void startDocument() throws SAXException {// TODO Auto-generated method stubsuper.startDocument();Toast.makeText(s, "startDocument", Toast.LENGTH_SHORT).show();System.out.println("startDocument");}@Overridepublic void startElement(String uri, String localName, String qName,Attributes attributes) throws SAXException {// TODO Auto-generated method stubsuper.startElement(uri, localName, qName, attributes);tagname=localName;Toast.makeText(s, tagname, Toast.LENGTH_SHORT).show();System.out.println(tagname);}}


這樣就可以解析出來了

另外,如果要解析出標籤的屬性的話,可以使用下面的代碼

for (int i = 0; i < attr.getLength(); i++){System.out.println(attr.getLocalName(i) + "=" + attr.getValue(i));}


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