Android-解析XML（Dom,Sax,Pull）
//Dom解析
public void ParseXML(View view) {
new MyThread().execute();
//02.解析xml
}
//异步任务类
class MyThread extends AsyncTask{
@Override
protected Object doInBackground(Object[] params) {
try {
URL url = new URL("http://www.w3school.com.cn/example/xmle/plant_catalog.xml");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
//获得请求方式
connection.setRequestMethod("GET");
//设置请求连接超时的时间
connection.setConnectTimeout(5000);
//获取结果码
int code=connection.getResponseCode();
if (code==200){
//获取服务器返回来的结果
InputStream inputStream=connection.getInputStream();
//打印
/* BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream));
String str=null;
while ((str=bufferedReader.readLine())!=null){
Log.i("test",str);
}*/
//使用Dom解析
DocumentBuilderFactory documentBuilderFactory=DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder=documentBuilderFactory.newDocumentBuilder();
Document document=documentBuilder.parse(inputStream);
//获取跟标签
Element element=document.getDocumentElement();
Log.i("test"," 跟标签 "+element.getNodeName());
//获取跟标签下面的子标签
NodeList nodeList=element.getElementsByTagName("PLANT");
for (int i = 0; i < nodeList.getLength(); i++) {
Element personElement= (Element) nodeList.item(i);
//获取跟标签下面的内容
Element COMMON= (Element) personElement.getElementsByTagName("COMMON").item(0);
String COMMONname=COMMON.getTextContent();
Element BOTANICAL= (Element) personElement.getElementsByTagName("BOTANICAL").item(0);
String BOTANICALNname=BOTANICAL.getTextContent();
Element ZONE= (Element) personElement.getElementsByTagName("ZONE").item(0);
String ZONENname=ZONE.getTextContent();
Log.i("test",COMMONname+" "+BOTANICALNname+" "+ZONENname);
}
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
//03.展示
}
}
//Sax解析
SAXParserFactory saxParserFactory=SAXParserFactory.newInstance();
SAXParser saxParser=saxParserFactory.newSAXParser();
saxParser.parse(inputStream,new DefaultHandler(){
@Override
public void endDocument() throws SAXException {
super.endDocument();}
@Override
public void startDocument() throws SAXException {
super.startDocument();}
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
super.startElement(uri, localName, qName, attributes);
currentTag=localName;
Log.i("ccc",localName);}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
super.endElement(uri, localName, qName);
currentTag=null; } @Override
public void characters(char[] ch, int start, int length) throws SAXException {
super.characters(ch, start, length);
//正文
if("COMMON".equals(currentTag)){
//获得值
String COMMON=new String(ch,start,length);
Log.i("test"," "+COMMON);
}else if ("BOTANICAL".equals(currentTag)){
String BOTANICAL=new String(ch,start,length);
Log.i("test"," "+BOTANICAL);
}
}
});}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} return null;
}
@Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
}//Pull解析
//pull解析
XmlPullParser xmlpullparser= Xml.newPullParser();
xmlpullparser.setInput(inputStream,"utf-8");
//获取解析的标签类型
int type=xmlpullparser.getEventType();
while (type!=XmlPullParser.END_DOCUMENT){
switch (type){
case XmlPullParser.START_TAG:
//获取开始标签的名字
String starttagname=xmlpullparser.getName();
if ("COMMON".equals(starttagname)){
String common=xmlpullparser.nextText();
Log.i("test",common);}
break;
case XmlPullParser.END_TAG:
break;}
type=xmlpullparser.next();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Object o) {
super.onPostExecute(o);
//03.展示
}