SAX解析 (解析XML文件)

public class DHandler extends DefaultHandler{

private List<PersonBean> list;
private PersonBean personBean;
String name;

//将解析完成后的数据返回Activity
public List<PersonBean> getdata(){
    return list;
}
//文档的开始
@Override
public void startDocument() throws SAXException {
    // TODO Auto-generated method stub
    super.startDocument();

    //创建集合 初始化数据
    list = new ArrayList<PersonBean>();

}

//属性节点开始    qName用来的到每个节点的值
@Override
public void startElement(String uri, String localName, String qName,
        Attributes attributes) throws SAXException {
    // TODO Auto-generated method stub
    super.startElement(uri, localName, qName, attributes);
    //如果遇到的是person的属性节点创建对象
    if(qName.equals("person")){
        personBean = new PersonBean();
    }
    name = qName;

}

//文本节点
@Override
public void characters(char[] ch, int start, int length)
        throws SAXException {
    // TODO Auto-generated method stub
    super.characters(ch, start, length);

    //得到当前的值
    String string = new String(ch, start, length);
    //如果遇到的是对应的节点就将值存入对应对象里的值
    if(name.equals("name")){
        personBean.setName(string);
    }else if(name.equals("age")){
        personBean.setAge(string);
    }

}

//结束属性节点
@Override
public void endElement(String uri, String localName, String qName)
        throws SAXException {
    // TODO Auto-generated method stub
    super.endElement(uri, localName, qName);

    name = "";
    //如果遇到person结束简单 就将对象存入集合
    if(qName.equals("person")){
        list.add(personBean);
    }


}
//结束文档
@Override
public void endDocument() throws SAXException {
    // TODO Auto-generated method stub
    super.endDocument();
}

}

—————–MainActivity代码—————-

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

//点击开始解析
public void getsax(View v){


        try {
            //得到XML文件
        InputStream open = getAssets().open("persons.xml");

        //得到解析工厂
        SAXParserFactory newInstance = SAXParserFactory.newInstance();
        //通过解析工厂得到解析器
        SAXParser newSAXParser = newInstance.newSAXParser();
        //解析当前的XML文件
        DHandler dh = new DHandler();
        newSAXParser.parse(open, dh);
        //接受解析完的数据
        List<PersonBean> list = dh.getdata();



        //作业 ：掌握后  将数据展示在Listview上
        Log.i("TAG", list.size()+"");

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


}

}
———javaBean代码———
public class PersonBean {

private String name;
private String age;
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getAge() {
    return age;
}
public void setAge(String age) {
    this.age = age;
}

}