用sax和Android中的pull解析xml文件，具体看文章内容，求好心大神解答！

[漫游的民工]

我分别用sax和pull解析我的xml文件，敲原书代码可以解析，但是照着书解析我自己的xml文件却解析不了，下面是我的project目录：
下面分别是各个文件或类中的内容：
lock.xml
<?xml version="1.0" encoding="UTF-8"?>
<control>
<cmdType>mm</cmdType>
<sn>15</sn>
<deviceID>12</deviceID>
<lockCmd>ss</lockCmd>
</control>
SAXLockService.java
public class SAXLockService extends DefaultHandler{
private static final String TAG="SAXLockService";
private List<Lock> locks;
private String preTag;
Lock lock;
public List<Lock> getLock(){
return locks;
}
public void startDocument()throws SAXException{
locks=new ArrayList<Lock>();
}
public void startElement(String uri,String localName,String qName,Attributes attributes)throws SAXException{
if("control".equals(localName)){
for(int i=0;i<attributes.getLength();i++){
lock=new Lock();
lock.setId(Integer.valueOf(attributes.getValue(i)));
}
}
preTag=localName;
}
public void characters(char[] ch,int start,int length)throws SAXException{
String data=new String(ch,start,length).trim();
if(!"".equals(data.trim())){
Log.i(TAG,"content:"+data.trim());
}
if("cmdType".equals(preTag)){
lock.setCmdType(data);
}
if("sn".equals(preTag)){
lock.setSn(new Integer(data));
}
if("deviceID".equals(preTag)){
lock.setDeviceID(new Integer(data));
}
if("lockCmd".equals(preTag)){
lock.setLockCmd(data);
}
}
public void endElement(String uri,String localName,String qName)throws SAXException{
if("control".equals(localName)){
locks.add(lock);
lock=null;
}
preTag=null;
}
public void endDocument()throws SAXException{
Log.i(TAG,"***endDocument***");
}
}
PullLockService.java
public class PullLockService {
public static List<Lock> getLock(InputStream in)throws Exception{
Lock lock=null;
List<Lock> locks=null;
XmlPullParser pullParser=Xml.newPullParser();
pullParser.setInput(in,"UTF-8");
int event=pullParser.getEventType();
while(event!=XmlPullParser.END_DOCUMENT){
switch(event){
case XmlPullParser.START_DOCUMENT:
locks=new ArrayList<Lock>();
break;
case XmlPullParser.START_TAG:
if("control".equals(pullParser.getName())){
lock=new Lock();
break;
}
if(lock!=null){
if("cmdType".equals(pullParser.getName())){
lock.setCmdType(pullParser.nextText());
}
if("sn".equals(pullParser.getName())){
lock.setSn(new Integer(pullParser.nextText()));
}
if("deviceID".equals(pullParser.getName())){
lock.setDeviceID(Integer.parseInt(pullParser.nextText()));
}
if("lockCmd".equals(pullParser.getName())){
lock.setLockCmd(pullParser.nextText());
}
}
break;
case XmlPullParser.END_TAG:
if("control".equals(pullParser.getName())){
locks.add(lock);
lock=null;
}
break;
}
event=pullParser.next();
}
return locks;
}
}
MainActivity.java这个内容不全，就是把xml中的内容解析出来，放在ListView中，分别用到了sax和pull，其中pull被注释了，我分别测试用的，
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button=(Button)findViewById(R.id.button);
list=(ListView)findViewById(R.id.listView);
button.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
/* InputStream instream=MainActivity.class.getClassLoader().getResourceAsStream("lock.xml");
try {
locks=PullLockService.getLock(instream);
adapter=new ArrayAdapter<Lock>(MainActivity.this,android.R.layout.simple_expandable_list_item_1,locks);
list.setAdapter(adapter);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}*/
try {
locks=MainActivity.this.sax_XML();
adapter=new ArrayAdapter<Lock>(MainActivity.this,android.R.layout.simple_expandable_list_item_1,locks);
list.setAdapter(adapter);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
public static List<Lock> sax_XML()throws Exception{
InputStream is=MainActivity.class.getClassLoader().getResourceAsStream("lock.xml");
SAXLockService service=new SAXLockService();
SAXParserFactory spf=SAXParserFactory.newInstance();
SAXParser saxParser=spf.newSAXParser();
saxParser.parse(is,service);
List<Lock> list=service.getLock();
is.close();
return list;
}
}
如果大神不了解Android，可以用纯Java中的SAX解析，用main（）函数输出打印在控制台，谢谢！但是在哪改了，如何修改，原因一定要说清楚啊，本人菜鸟级人物，智商低，谅解之！