알면 편리한 SAX Parser

Java

알면 편리한 SAX Parser

우혁이 아빠 2010. 4. 20. 13:42

모르면 DOM 파서 쓰던가... ㅋㅋㅋ

우선 필요한 xml을 준비하자.

1. phonebook.xml

2. PhoneBook.java

package com.tazz;

import org.apache.commons.lang.builder.ToStringBuilder;

public class PhoneBook {
	private String firstname = ""; 
    private String lastname = ""; 
    private String Address = ""; 
    private String homephone = ""; 
    private String workphone = ""; 
    private String mobilephone = "";
    
	public String getFirstname() {
		return firstname;
	}
	public void setFirstname(String firstname) {
		this.firstname = firstname;
	}
	public String getLastname() {
		return lastname;
	}
	public void setLastname(String lastname) {
		this.lastname = lastname;
	}
	public String getAddress() {
		return Address;
	}
	public void setAddress(String address) {
		Address = address;
	}
	public String getHomephone() {
		return homephone;
	}
	public void setHomephone(String homephone) {
		this.homephone = homephone;
	}
	public String getWorkphone() {
		return workphone;
	}
	public void setWorkphone(String workphone) {
		this.workphone = workphone;
	}
	public String getMobilephone() {
		return mobilephone;
	}
	public void setMobilephone(String mobilephone) {
		this.mobilephone = mobilephone;
	}
	
	@Override
	public String toString() {
		return ToStringBuilder.reflectionToString(this);
	}
}

3. ExampleHandler.java

package com.tazz;

import java.util.ArrayList;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class ExampleHandler extends DefaultHandler {
	// ===========================================================
	// Fields
	// ===========================================================
	private String position = "";
	private PhoneBook phoneBook;
	private ArrayList<PhoneBook> list;
	// ===========================================================
	// Getter & Setter
	// ===========================================================

public ArrayList<PhoneBook> getParsedData() {
		return this.list;
	}

// ===========================================================
	// Methods
	// ===========================================================
	@Override
	public void startDocument() throws SAXException {
		this.list = new ArrayList<PhoneBook>();
	}

@Override
	public void endDocument() throws SAXException {
		// Nothing to do
	}

@Override
	public void startElement(String namespaceURI, String localName,
			String qName, Attributes atts) throws SAXException {
		System.out.println(namespaceURI);
		System.out.println(localName);
		System.out.println(qName);
		if (qName.equals("PhonebookEntry")) {
			phoneBook = new PhoneBook();
		} else if (qName.equals("firstname")) {
			position = "firstname";
		} else if (qName.equals("lastname")) {
			position = "lastname";
		} else if (qName.equals("Address")) {
			position = "Address";
		} else if (qName.equals("Phone")) {
			String attValue = atts.getValue("loc");
			if (attValue.equals("home")) {
				position = attValue;
			} else if (attValue.equals("work")) {
				position = attValue;
			} else if (attValue.equals("mobile")) {
				position = attValue;
			}
		}
		
		
	}

@Override
	public void endElement(String namespaceURI, String localName, String qName)
			throws SAXException {
		System.out.println(namespaceURI);
		System.out.println(localName);
		System.out.println(qName);
		
		if (qName.equals("PhonebookEntry")) {
			list.add(phoneBook);
		}
		
	}

@Override
	public void characters(char ch[], int start, int length) {
		System.out.println("characters");
		
		if (position.equals("firstname")) {
			phoneBook.setFirstname((new String(ch, start,
					length)).trim());
			position = "";
		}
		
		if (position.equals("lasname")) {
			phoneBook.setLastname((new String(ch, start,
					length)).trim());
			position = "";
		}
		
		if (position.equals("Address")) {
			phoneBook.setAddress((new String(ch, start,
					length)).trim());
			position = "";
		}
		
		if (position.equals("home")) {
			phoneBook.setHomephone((new String(ch, start,
					length)).trim());
			position = "";
		}
		
		if (position.equals("work")) {
			phoneBook.setWorkphone((new String(ch, start,
					length)).trim());
			position = "";
		}
		
		if (position.equals("mobile")) {
			phoneBook.setMobilephone((new String(ch, start,
					length)).trim());
			position = "";
		}
	}

}

4. ParsingXML.java

import java.io.File;
import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.Iterator;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.apache.commons.io.FileUtils;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;

import com.tazz.ExampleHandler;
import com.tazz.PhoneBook;

public class PaseingXML {

/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			/*
			URL url = new URL(
					"http://www.anddev.org/images/tut/basic/parsingxml/example.xml");
			System.out.println(IOUtils.toString(url.openStream()));
			*/
			File file = new File("D:\\GalileoForHtml\\workspace\\tazz.com\\SaxParserTest\\phonebook.xml");
			System.out.println(FileUtils.readLines(file, "UTF-8"));
			/* Get a SAXParser from the SAXPArserFactory. */
			SAXParserFactory spf = SAXParserFactory.newInstance();
			SAXParser sp = spf.newSAXParser();

/* Get the XMLReader of the SAXParser we created. */
			XMLReader xr = sp.getXMLReader();
			
			/* Create a new ContentHandler and apply it to the XML-Reader */
			ExampleHandler myExampleHandler = new ExampleHandler();
			xr.setContentHandler(myExampleHandler);

/* Parse the xml-data from our URL. */
			xr.parse(new InputSource(new FileInputStream(file)));
			/* Parsing has finished. */

/* Our ExampleHandler now provides the parsed data to us. */
			ArrayList<PhoneBook> list = myExampleHandler
					.getParsedData();

for (Iterator<PhoneBook> iterator = list.iterator(); iterator.hasNext();) {
				PhoneBook phoneBook = (PhoneBook) iterator.next();
				System.out.println(phoneBook.toString());
			}
		} catch (Exception e) {
			e.printStackTrace();
		}

}

정말 알면 상당히 편하게 파싱할 수 있다. 모르면 DOM파서 그냥 쓰면 된다.

DOM파서보다는 SAX파서가 빠르다는 데 개발자의 취향에 따라 ...

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