Android之SAX解析Xml文件实现

public class JokeBean {
    private String id;
    private String title;
    private StringBuilder text=new StringBuilder();
    public JokeBean(){
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getText() {
        return text.toString();
    }

    public void setText(String text) {
        this.text.append(text);
    }
}

然后是解析类，继承DefaultHandler类：

public class SAXHandler extends DefaultHandler{
    private static final String TAG = "SAXHandler";
    private List<JokeBean> data;
    private JokeBean joke;
    private String preTAG;
    
    private static final String JOKE="joke";
    private static final String JOKE_ID="id";
    private static final String JOKE_TITLE="title";
    private static final String JOKE_TEXT="text";
    
    public SAXHandler(List<JokeBean> data){
        super();
        this.data = data;
    }
    
    @Override
    public void startDocument() throws SAXException {
        if(data==null)
            data=new ArrayList<JokeBean>();
        Log.d(TAG, "startDocument ------- :");
        super.startDocument();
    }
    @Override
    public void endDocument() throws SAXException {
        Log.d(TAG, "endDocument ------- :");
        super.endDocument();
    }
    
    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {
        Log.d(TAG, "endDocument ------- :localName "+localName);
        
        preTAG = localName;
        if(JOKE.equals(localName)){
            joke=new JokeBean();
        }
        
        super.startElement(uri, localName, qName, attributes);
    }
    
    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {
        preTAG = "";
        if(JOKE.equals(localName)){
            data.add(joke);
            Log.d(TAG, "endElement ------- :一个解析对象完成 。。。。 ");
        }
        super.endElement(uri, localName, qName);
    }
    
    @Override
    public void characters(char[] ch, int start, int length)
            throws SAXException {
        String info = new String(ch,start,length);  
        Log.d(TAG, "characters ------- : info" +info);
        if(preTAG.equals(JOKE_ID)){
            joke.setId(info);
        }else if(preTAG.equals(JOKE_TITLE)){
            joke.setTitle(info);
        }else if(preTAG.equals(JOKE_TEXT)){
            joke.setText(info);
        }
        super.characters(ch, start, length);
    }
    
    public List<JokeBean> getdata(){
        return data;
    }
}

封装解析xml的工具类，方便客户端调用：

public class XMLUtil {
    
    public static List<JokeBean> parserXML(Context context,int rawId){
        List<JokeBean> data = new ArrayList<JokeBean>();
        SAXParserFactory factory=SAXParserFactory.newInstance();
        XMLReader reader;
        try {
            reader = factory.newSAXParser().getXMLReader();
            reader.setContentHandler(new SAXHandler(data)); 
            InputSource is = new InputSource(context.getResources().openRawResource(rawId));
            is.setEncoding("utf-8");
            reader.parse(is); 
        } catch (Exception e) {
            e.printStackTrace();
        } 
        return data;
    }
}

客户端主类代码：

public class MainActivity extends Activity implements OnClickListener {
    /** Called when the activity is first created. */
    Button btnSAX, btnOutput;
    EditText memo;
    private List<JokeBean> data;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        memo = (EditText)findViewById(R.id.EditText01);
        findViewById(R.id.btnOutput).setOnClickListener(this);
    }

    public void onClick(View v) {
        if(v.getId()==R.id.btnOutput){
            mHandler.post(new Runnable() {
                public void run() {
                     data=XMLUtil.parserXML(MainActivity.this,R.raw.joke2);
                     memo.setText(data.get(0).getText());
                }
            });
        }
    }
    private Handler mHandler = new Handler();
}

xml的格式：

<?xml version="1.0" encoding="UTF-8" ?> 
<jokes>
    <joke>
        <id>1</id>
        <title>笑话一</title>
        <text><![CDATA[我爱人民]]></text>
    </joke>
</jokes>

参考：

http://blog.csdn.net/boyupeng/article/details/6304827