안 드 로 이 드 개발 기초 튜 토리 얼-세 가지 방식 으로 xml 파일 분석 실현

 
/** 
*   sax   
*/ 
public class SaxParse{ 
/** 
* sax    
*/ 
private SAXParser parser; 
public SaxParse(){ 
try { 
SAXParserFactory f = SAXParserFactory.newInstance(); 
parser = f.newSAXParser(); 
} catch (ParserConfigurationException e) { 
e.printStackTrace(); 
} catch (Exception e) { 
e.printStackTrace(); 
} 
} 
public List<Person> doParse(InputStream is) { 
try { 
XmlHandler h = new XmlHandler(); 
parser.parse(is,h); 
return h.getpersons(); 
} catch (Exception e) { 
e.printStackTrace(); 
} 
return null; 
} 
/** 
*     
*/ 
class XmlHandler extends DefaultHandler{ 
List<Person> persons = null ; 
Person person = null ; 
//       
private String currEleName; 
/** 
*           
*/ 
public void characters(char[] ch, int start, int length)throws SAXException { 
String str = new String(ch,start,length); 
//name 
if("name".equals(currEleName)){ 
person.name = str ; 
} 
else if("age".equals(currEleName)){ 
person.age = Integer.parseInt(str); 
} 
} 
public void endDocument() throws SAXException { 
} 
/** 
*      
*/ 
public void endElement(String uri, String localName, String qName) 
throws SAXException { 
if("person".equals(localName)){ 
persons.add(person); 
} 
//        
else if(("name".equals(currEleName)) || ("age".equals(currEleName))){ 
this.currEleName = "" ; 
} 
} 
/** 
*        
*/ 
public void startDocument() throws SAXException { 
persons = new ArrayList<Person>(); 
} 
/** 
*        
* localName:    
* uri:     
* qName:   ,   +     
*/ 
public void startElement(String uri, String localName, String qName, 
Attributes attributes) throws SAXException { 
//   person   
if("person".equals(localName)){ 
person = new Person(); 
person.id = Integer.parseInt(attributes.getValue(0)); 
} 
//name   
else if("name".equals(localName)){ 
this.currEleName = "name" ; 
} 
//name   
else if("age".equals(localName)){ 
this.currEleName = "age" ; 
} 
} 
public List<Person> getpersons(){ 
return persons ; 
} 
} 
} 

 
/** 
* DOM   
*/ 
public class DomParse{ 
// 
private DocumentBuilder builder; 
public DomParse(){ 
try { 
DocumentBuilderFactory f = DocumentBuilderFactory.newInstance(); 
this.builder = f.newDocumentBuilder(); 
} catch (Exception e) { 
e.printStackTrace(); 
} 
} 
public List<Person> doParse(InputStream is) { 
List<Person> persons = new ArrayList<Person>(); 
Person person = null ; 
try { 
Document doc = builder.parse(is); 
NodeList list = doc.getElementsByTagName("person"); 
Element ele = null ; 
for(int i = 0 ; i < list.getLength() ; i ++){ 
ele = (Element) list.item(i); 
person = new Person(); 
person.id = Integer.parseInt(ele.getAttribute("id")); 
person.name = getSubElementTextContent(ele,"name"); 
person.age = Integer.parseInt(getSubElementTextContent(ele,"age")); 
persons.add(person); 
} 
} catch (Exception e) { 
e.printStackTrace(); 
} 
return persons; 
} 
/** 
*                 
*/ 
private String getSubElementTextContent(Element ele, String tagName) { 
NodeList list = ele.getElementsByTagName(tagName); 
Element e = (Element) list.item(0); 
//          
return e.getTextContent(); 
} 
} 

 
/** 
* pull  ,   ,               . 
*/ 
public class PullParse{ 
public List<Person> doParse(InputStream is) { 
List<Person> persons = null ; 
Person person = null ; 
try { 
XmlPullParser parser = Xml.newPullParser(); 
//        
parser.setInput(is, "utf-8"); 
//        
int eventType = parser.getEventType(); 
String eleName = null ; 
while(eventType != XmlPullParser.END_DOCUMENT){ 
switch(eventType){ 
//     
case XmlPullParser.START_DOCUMENT: 
persons = new ArrayList<Person>(); 
break ; 
//     
case XmlPullParser.START_TAG: 
eleName = parser.getName(); 
if("person".equals(eleName)){ 
person = new Person(); 
person.id = Integer.parseInt(parser.getAttributeValue(0)); 
} 
else if("name".equals(eleName)){ 
person.name = parser.nextText(); 
} 
else if("age".equals(eleName)){ 
person.age = Integer.parseInt(parser.nextText()); 
} 
break ; 
//     
case XmlPullParser.END_TAG: 
eleName = parser.getName(); 
if("person".equals(eleName)){ 
persons.add(person); 
} 
break ; 
} 
//            
eventType = parser.next(); 
} 
} catch (Exception e) { 
e.printStackTrace(); 
} 
return persons; 
} 
}