SAX解析XML文件浅析

§  注意：（XML文件中有特殊字符例如“&”的时候，解析不出来，“&”替换为“&”可以解析出来）

§  XML文件：

<?xml version="1.0" encoding="utf-8"?>

<playinfos>

    <playinfo id="1">

        <name>CCTV1综合</name><address>http://live.gslb.letv.com/gslb?stream_id=cctv1&amp;amptag=live&amp;ampext=m3u8&amp;ampsign=live_ipad</address>

    </playinfo>

    <playinfo id="2">

        <name>CCTV2财经 </name>

        <address>http://live.gslb.letv.com/gslb?stream_id=cctv2&amp;amptag=live&amp;ampext=m3u8&amp;ampsign=live_ipad</address>

    </playinfo>

        <playinfo id="3">

        <name>CCTV-3综艺</name>

        <address>http://live.gslb.letv.com/gslb?stream_id=cctv3&amp;amptag=live&amp;ampext=m3u8&amp;ampsign=live_ipad</address>

    </playinfo>

    <playinfo id="4">

        <name>CCTV-4亚洲 </name>

        <address>http://live.gslb.letv.com/gslb?stream_id=cctv4&amp;amptag=live&amp;ampext=m3u8&amp;ampsign=live_ipad</address>

    </playinfo>

</playinfos>

 

 

§  定义handler：

public class PlayerAddressHandler extends DefaultHandler  {

    private ArrayList<PlayInfo> playInfos;

    private PlayInfo playInfo;

    private String content;

   public ArrayList<PlayInfo> getPlayInfos() {

        return playInfos;

    }

   @Override

    public void startDocument() throws SAXException {

        super.startDocument();

        playInfos = new ArrayList<PlayInfo>();

        System.out.println("----------Start Parse Document----------" );

    }

     

    @Override

    public void endDocument() throws SAXException {

        System.out.println("----------End Parse Document----------" );

    } 

    @Override

    public void characters(char[] ch, int start, int length)

            throws SAXException {

        super.characters(ch, start, length);

        // 获得标签中的文本

        content = new String(ch, start, length);

    }

 

    @Override

    public void startElement(String uri, String localName, String qName,

            Attributes attributes) throws SAXException {

        super.startElement(uri, localName, qName, attributes);

        // 打印出localname和qName

        System.out.println("LocalName->" + localName);

        System.out.println("QName->" + qName);

        if ("playinfo".equals(localName)) {

        playInfo = new PlayInfo();

            playInfo.setId(Integer.parseInt(attributes.getValue("id")));

        }

    }

 

    @Override

    public void endElement(String uri, String localName, String qName)

            throws SAXException {

        super.endElement(uri, localName, qName);

        if ("name".equals(localName)) {

            playInfo.setName(content);

        } else if ("address".equals(localName)) {

            playInfo.setAddress(content);

        } else if ("playinfo".equals(localName)) {

            playInfos.add(playInfo);

        }

    }

}

 

 

§  获取数据代码：

SAXParserFactory factory = SAXParserFactory.newInstance();

            // 通过工厂对象得到一个解析器对象

            SAXParser parser;

try {

parser = factory.newSAXParser();

XMLReader reader = parser.getXMLReader();

            // 通过parser得到XMLReader对象

            // 为reader对象注册事件处理接口

            PlayerAddressHandler handler = new PlayerAddressHandler();

            reader.setContentHandler(handler);    

          // 解析指定XML字符串对象

reader.parse(new InputSource(PlayAddressActivity.class.getClassLoader().getResourceAsStream("address/address_hanguo.xml")));

playinfos= handler.getPlayInfos();