JAXP (Java API for XML Processing)을 사용하는 간단한 예제들을 볼수 있음
== XML 데이터 == (XSD나 DTD는 안넣어놨음. )
<?xml version="1.0" encoding="utf-8"?>
<CHESSBOARDS>
<CHESSBOARD>
<WHITEPIECES>
<KING><POSITION COLUMN="G" ROW="1"/></KING>
<BISHOP><POSITION COLUMN="D" ROW="6"/></BISHOP>
<ROOK><POSITION COLUMN="E" ROW="1"/></ROOK>
<PAWN><POSITION COLUMN="A" ROW="4"/></PAWN>
<PAWN><POSITION COLUMN="B" ROW="3"/></PAWN>
<PAWN><POSITION COLUMN="C" ROW="2"/></PAWN>
<PAWN><POSITION COLUMN="F" ROW="2"/></PAWN>
<PAWN><POSITION COLUMN="G" ROW="2"/></PAWN>
<PAWN><POSITION COLUMN="H" ROW="5"/></PAWN>
</WHITEPIECES>
<BLACKPIECES>
<KING><POSITION COLUMN="B" ROW="6"/></KING>
<QUEEN><POSITION COLUMN="A" ROW="7"/></QUEEN>
<PAWN><POSITION COLUMN="A" ROW="5"/></PAWN>
<PAWN><POSITION COLUMN="D" ROW="4"/></PAWN>
</BLACKPIECES>
</CHESSBOARD>
</CHESSBOARDS>
import org.xml.sax.*;
import javax.xml.parsers.*;
import java.io.*;
public class ChessboardSAXPrinter {
private SAXParser parser;
private static PrintStream out;
@SuppressWarnings("deprecation")
public class ChessboardHandler extends HandlerBase
{
private boolean whitePiece= false;
@SuppressWarnings("deprecation")
public void startElement(String name, AttributeList attrs)
{
if(name.equals("WHITEPIECES"))
{
whitePiece=true;
}
else if(name.equals("BLACKPIECES"))
{
whitePiece=false;
}
else if(name.equals("KING") || name.equals("QUEEN") || name.equals("BISHOP")|| name.equals("ROOK")
|| name.equals("ROOK") || name.equals("KNIGHT") || name.equals("PAWN"))
{
System.out.print((whitePiece ? "White" : "Black") + " " + name.toLowerCase() + ": ");
}
else if(name.equals("POSITION"))
{
if(attrs!=null)
{
System.out.print(attrs.getValue("COLUMN"));
System.out.println(attrs.getValue("ROW"));
}
}
return;
}
}
public ChessboardSAXPrinter(boolean validating) throws Exception
{
SAXParserFactory factory=SAXParserFactory.newInstance();
factory.setValidating(validating);
parser=factory.newSAXParser();
return;
}
public void print(String fileName, PrintStream out) throws SAXException, IOException
{
ChessboardHandler dh=new ChessboardHandler();
parser.parse(fileName, dh);
return;
}
public static void main(String[] args)
{
boolean validating=true;
int r,n;
r=1;
n=1;
for(int k=0; k < r; k++)
{
try
{
ChessboardSAXPrinter saxPrinter=new ChessboardSAXPrinter(validating);
long time = System.currentTimeMillis();
for (int i = 0; i < n; i++) {
// n: number of document processed per run
//saxPrinter.print(args[0], out);
saxPrinter.print(args[0], out);
}
// print out the average time (s)
// to process a document during the current run
System.err.print(((double) (System.currentTimeMillis()- time)) / 1000 / n + "\t");
}
catch(SAXException ex)
{
System.out.println(ex.getMessage());
}
catch(IOException iex)
{
System.out.println(iex.getMessage());
}
catch(Exception uex)
{
System.out.println(uex.getMessage());
}
}
}
}
----- DOM으로 처리한 경우 ----------
import org.w3c.dom.*;
import org.xml.sax.*;
import javax.xml.parsers.*;
import java.io.*;
public class ChessboardDOMPrinter {
private DocumentBuilder builder;
boolean validate;
public ChessboardDOMPrinter(boolean _validate)
{
validate=_validate;
}
public void print(String fileName, PrintStream out) throws SAXException, IOException, ParserConfigurationException
{
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(validate);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
DocumentBuilder builder = dbf.newDocumentBuilder();
Document document = builder.parse(fileName);
NodeList nodes_i = document.getDocumentElement().getChildNodes();
for(int i=0; i< nodes_i.getLength(); i++)
{
Node node_i=nodes_i.item(i);
if(node_i.getNodeType()==Node.ELEMENT_NODE && ((Element)node_i).getTagName().equals("CHESSBOARD"))
{
Element chessboard=(Element) node_i;
NodeList nodes_j=chessboard.getChildNodes();
for(int j=0; j< nodes_j.getLength(); j++)
{
Node node_j = nodes_j.item(j);
if (node_j.getNodeType() == Node.ELEMENT_NODE) {
Element pieces = (Element) node_j;
NodeList nodes_k = pieces.getChildNodes();
for (int k = 0; k < nodes_k.getLength(); k++) {
Node node_k = nodes_k.item(k);
if (node_k.getNodeType() == Node.ELEMENT_NODE) {
Element piece = (Element) node_k;
Element position = (Element) piece.getChildNodes().item(0);
System.out.println((pieces.getTagName()
.equals("WHITEPIECES")
? "White " : "Black ")
+ piece.getTagName().toLowerCase()
+ ": "
+ position.getAttribute("COLUMN")
+ position.getAttribute("ROW"));
}
}
}
}
}
}
return;
}
public void print2(String fileName, PrintStream out) throws SAXException, IOException, ParserConfigurationException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(validate);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
DocumentBuilder builder = dbf.newDocumentBuilder();
Document document = builder.parse(fileName);
NodeList positions = document.getElementsByTagName("POSITION");
for (int i = 0; i < positions.getLength(); i++) {
Element position = (Element) positions.item(i);
Element piece = (Element) position.getParentNode();
Element pieces = (Element) piece.getParentNode();
out.println( (pieces.getTagName().equals("WHITEPIECES") ? "White " : "Black ")
+ piece.getTagName().toLowerCase() + ": "
+ position.getAttribute("COLUMN")
+ position.getAttribute("ROW"));
}
return;
}
public static void main(String[] args)
{
PrintStream out=System.out;
try{
ChessboardDOMPrinter domPrinter=new ChessboardDOMPrinter(false);
domPrinter.print2("E:\\DEV_STUDY\\WebCrawler\\WebCrawler\\chessboard.xml", out);
}
catch(SAXException sex){
System.err.println(sex.getMessage());
}
catch(IOException iex){
System.err.println(iex.getMessage());
}
catch(ParserConfigurationException pcex)
{
System.err.println(pcex.getMessage());
}
catch(Exception ex){
System.err.println(ex.getMessage());
}
}
}
====== XPATH 관련 ==========
// 추가
import javax.xml.transform.*;
import javax.xml.xpath.*;
.............
public void print3(String fileName, PrintStream out) throws TransformerException,SAXException, IOException, ParserConfigurationException
{
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(validate);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
DocumentBuilder builder = dbf.newDocumentBuilder();
Document document = builder.parse(fileName);
NodeList allPieces=XPathAPI.selectNodeList(document.getDocumentElement(), "//*[self::WHITEPIECES or self::BLACKPIECES]/*");
for(int i=0; i < allPieces.getLength(); i++)
{
Element piece=(Element)allPieces.item(i);
Element pieces=(Element)piece.getParentNode();
Element position = (Element) piece.getChildNodes().item(0);
System.out.println((pieces.getTagName().equals("WHITEPIECES")? "White ":"Black ")+piece.getTagName().toLowerCase()+": " + position.getAttribute("COLUMN")+position.getAttribute("ROW"));
}
return;
}
출처 : http://ausgang.egloos.com/1998938
참조 : http://java.sun.com/developer/technicalArticles/xml/JavaTechandXML/#code14
http://www.java2s.com/
http://www.java2s.com/Code/JavaAPI/javax.xml.parsers/DocumentBuilderFactorynewDocumentBuilder.htm
