Android数据篇SAX解析XML

作为三大解析XML方式之一，这里介绍的是SAX解析:

第一步：

        try {
            //创建一个解析器的工厂
            SAXParserFactory factory = SAXParserFactory.newInstance();
            XMLReader xmlReader = factory.newSAXParser().getXMLReader();
            //为XMLReader设置内容处理器
            xmlReader.setContentHandler(new MyContentHandler());
            xmlReader.parse(new InputSource(new StringReader(str)));
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }

第二步：

public class MyContentHandler extends DefaultHandler{
    private String tagName;//标示 
    private String hisName,address,sex,status,money;
    
    @Override
    public void characters(char[] ch, int start, int length)
            throws SAXException {
        // TODO Auto-generated method stub
        if(tagName.equals("name")){
            hisName = new String(ch,start,length);
        }else if(tagName.equals("sex")){
            sex = new String(ch, start, length);
        }else if(tagName.equals("status")){
            status = new String(ch, start, length);
        }else if(tagName.equals("address")){
            address = new String(ch, start, length);
        }else if(tagName.equals("money")){
            money = new String(ch, start, length);
        }
    }

    @Override
    public void endDocument() throws SAXException {
        // TODO Auto-generated method stub
        Log.i("+++","end");
        super.endDocument();
    }

    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {
        // TODO Auto-generated method stub
        if(localName.equals("worker")){
            //解析结束 打印出相关字段
            printOut();
        }
        super.endElement(uri, localName, qName);
    }

    @Override
    public void startDocument() throws SAXException {
        // TODO Auto-generated method stub
        Log.i("+++", "start");
        super.startDocument();
    }
    
    /**
     * @param uri 当前标签的命名空间
     * @param localName 不带前缀
     * @param qName 带前缀 
     * @param attributes 标签的所有属性
     */
    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {
        // TODO Auto-generated method stub
        tagName = localName;
        if(localName.equals("worker")){
            for(int i=0;i<attributes.getLength();i++){
                System.out.print(attributes.getLocalName(i)+"="+attributes.getValue(i));
            }
        }
        super.startElement(uri, localName, qName, attributes);
    }
    
    private void printOut(){
        Log.i("json", "name: " + hisName);
        Log.i("json", "sex= " + sex);
        Log.i("json", "address: " + address);
        Log.i("json", "status= " + status);
        Log.i("json", "money= " + money);
    }