How does android parse XML files using DOM and SAXParserFactory?

Opencv provides several classifiers, which are described by character recognition in routines. 1. support vector machine (SVM): Given training samples, the support vector machine creates a hyperplane as the decision plane, this maximizes the isolation edge between the positive and negative examples. Function prototype: training prototype cv2.SVM. train (trainData, responses [, varIdx [, sampleIdx [, params]). trainD has the following xml files:

 
       
            
   
    rjzjh
             
   
    jjjjjj
         
         
            
   
    bbbb
             
   
    ccc
         
    
 

In this way, we will analyze:

Import java. util. arrayList; import javax. xml. parsers. documentBuilder; import javax. xml. parsers. documentBuilderFactory; import org. w3c. dom. document; import org. w3c. dom. element; import org. w3c. dom. node; import org. w3c. dom. nodeList; import android. app. activity; import android. content. context; import android. content. intent; import android. content. res. assetManager; import android. OS. bundle; import android. util. log; public class TestActivity extends Activity {@ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); XmlReader (); for (int I = 0; I
 
  
Node mybook = new Book (); String email = book. getAttributes (). getNamedItem ("email "). getNodeValue (); mybook. email = email; for (Node node = book. getFirstChild (); node! = Null; node = node. getNextSibling () {if (node. getNodeType () = Node. ELEMENT_NODE) {if (node. getNodeName (). equals ("name") {String name1 = node. getFirstChild (). getNodeValue (); mybook. name = name1;} if (node. getNodeName (). equals ("price") {String price = node. getFirstChild (). getNodeValue (); mybook. price = price ;}} list. add (mybook) ;}}} catch (Exception e) {e. printStackTrace () ;}} private ArrayList
  
   
List = new ArrayList
   
    
(); Private class Book {String email; String name; String price ;}
   
  
 

Using SAXParserFactory:

@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);SAXParserFactory factory = SAXParserFactory.newInstance();try {SAXParser saxParser = factory.newSAXParser();InputStream is = this.getAssets().open("test1.xml", Context.MODE_PRIVATE);saxParser.parse(is, new MyDefaultHandler());} catch (Exception ex) {}System.out.println("===size=" + list.size());for (int i = 0; i < list.size(); i++) {Book book = list.get(i);Log.d("TAG", "name=" + book.name + "email=" + book.email);}}protected String getElementName(String name, String qName) {if ("".equals(name)) {return qName;} else {return name;}}class MyDefaultHandler extends DefaultHandler {private StringBuffer buf;private Book mBook;public MyDefaultHandler() {super();mBook = new Book();}protected StringBuffer getBuffer() {return this.buf;}@Overridepublic void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {super.startElement(uri, localName, qName, attributes);buf = new StringBuffer();for (int i = 0; i < attributes.getLength(); i++) {String value = attributes.getValue(i);mBook.email = value;}}@Overridepublic void characters(char[] chars, int start, int length) throws SAXException {super.characters(chars, start, length);getBuffer().append(chars, start, length);}@Overridepublic void endElement(String uri, String localName, String qName) throws SAXException {super.endElement(uri, localName, qName);String elementName = getElementName(localName, qName);if (elementName.equals("book")) {list.add(mBook);mBook = new Book();} else if (elementName.equals("name")) {mBook.name = getBuffer().toString();} else if (elementName.equals("price")) {mBook.price = getBuffer().toString();}}}private ArrayList
 
   list = new ArrayList
  
   ();private class Book {String email;String name;String price;@Overridepublic String toString() {return "name=" + name + "price=" + price;}}
  
 

The preceding figure shows how android uses DOM and SAXParserFactory to parse the content of the XML file. For more information, see PHP Chinese website (www.php1.cn )!