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Java SE/JDOM Example 01

JDOM Example 01

Soul-Learner 2009. 5. 22. 16:43

JDOM 을 이용하여 읽어올 XML 파일(catalog.xml)

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JDOM Library (http://www.jdom.org)
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<?xml version="1.0" encoding="ISO-8859-1"?>

<catalog>

  <category>
    Small chamber ensembles - 2-4 Players by New York Women Composers
  </category>

  <cataloging_info>
    <abstract>Compositions by the members of New York Women Composers</abstract>
    <keyword>music publishing</keyword>
    <keyword>scores</keyword>
    <keyword>women composers</keyword>
    <keyword>New York</keyword>
  </cataloging_info>

  <last_updated>July 28, 1999</last_updated>
  <copyright>1999 New York Women Composers</copyright>
  <maintainer email="elharo@metalab.unc.edu"
              url="http://www.macfaq.com/personal.html">
    <name>
      <first_name>Elliotte</first_name>
      <middle_name>Rusty</middle_name>
      <last_name>Harold</last_name>
    </name>
  </maintainer>

  <composer id="c1">
    <name>
      <first_name>Julie</first_name>
      <middle_name><![CDATA[CDATA String]]></middle_name>
      <last_name>Mandel</last_name>
    </name>
  </composer>

  <composer id="c2">
    <name>
      <first_name>Margaret</first_name>
      <middle_name>De</middle_name>
      <last_name>Wys</last_name>
    </name>
  </composer> 
   
  <composer id="c3">
    <name>
      <first_name>Beth</first_name>
      <middle_name></middle_name>
      <last_name>Anderson</last_name>
    </name>
  </composer>
   
  <composer id="c4">
    <name>
      <first_name>Linda</first_name>
      <middle_name></middle_name>
      <last_name>Bouchard</last_name>
    </name>
  </composer>
   
  <composition composer="c1">
    <title>Trio for Flute, Viola and Harp</title>
    <date><year>(1994)</year></date>
    <length>13'38"</length>
    <instruments>fl, hp, vla</instruments>
    <description>
      <p>Premiered at Queens College in April, 1996 by Sue Ann Kahn,
      Christine Ims, and Susan Jolles. In 3 movements :</p>
      <ul>
        <li>mvt. 1: 5:01</li>
        <li>mvt. 2: 4:11</li>
        <li>mvt. 3: 4:26</li>
      </ul> 
    </description>
    <publisher>Theodore Presser</publisher>
  </composition>

  <composition composer="c2">
    <title>Charmonium</title>
    <date><year>(1991)</year></date>
    <length>9'</length>
    <instruments>2 vln, vla, vc</instruments>
    <description>
      Commissioned as quartet for the Meridian String Quartet.
      Sonorous, bold. Moderate difficulty. Tape available.
    </description>
    <publisher></publisher>
  </composition>

  <composition composer="c1">
    <title>Invention for Flute and Piano</title>
    <date><year>(1994)</year></date>
    <length></length>
    <instruments>fl, pn</instruments>
    <description>3 movements</description>
    <publisher></publisher>
  </composition>

  <composition composer="c3">
    <title>Little Trio</title>
    <date><year>(1984)</year></date>
    <length>4'</length>
    <instruments>fl, guit, va</instruments>
    <description></description>
    <publisher>ACA</publisher>
  </composition>

  <composition composer="c3">
    <title>Dr. Blood's Mermaid Lullaby</title>
    <date><year>(1980)</year></date>
    <length>3'</length>
    <instruments>fl or ob, or vn, or vc, pn</instruments>
    <description></description>
    <publisher>ACA</publisher>
  </composition>

  <composition composer="c3">
    <title>Trio: Dream in D</title>
    <date><year>(1980)</year></date>
    <length>10'</length>
    <instruments>fl, pn, vc, or vn, pn, vc</instruments>
    <description>
      Rhapsodic. Passionate. Available on CD
      <cite><a href="http://www.amazon.com/exec/obidos/ASIN/B000007NMH/qid%3D913265342/sr%3D1-2/">Two by Three</a></cite>
      from North/South Consonance (1998).
    </description>
    <publisher></publisher>
  </composition>

  <composition composer="c4">
    <title>Propos II</title>
    <date><year>(1985)</year></date>
    <length>11'</length>
    <instruments>2 tpt</instruments>
    <description>Arrangement from Propos</description>
    <publisher></publisher>
  </composition>

  <composition composer="c4">
    <title>Rictus En Mirroir</title>
    <date><year>(1985)</year></date>
    <length>14'</length>
    <instruments>fl, ob, hpschd, vc</instruments>
    <description></description>
    <publisher></publisher>
  </composition>

</catalog>



JDOM 을 이용하여 XML문서의 특정 요소를 찾아서 출력하는 예제

import java.io.*;

import org.jdom.*;
import org.jdom.filter.ElementFilter;
import org.jdom.input.*;
import org.jdom.output.*;
import java.util.*;

public class JDOMTest {

 public static void main(String[] args) throws Exception {
  SAXBuilder builder = new SAXBuilder();
  Document doc = builder.build("catalog.xml");
  //특정 요소(Element)만 가져올 경우
  Iterator itr = doc.getDescendants(new ElementFilter("composer"));
        while (itr.hasNext()) {
            Content c = (Content) itr.next();
            //System.out.println(c.getValue());
            if(c instanceof Element){
             //System.out.println("요소(Element)발견");
             Element e = (Element)c;
             Attribute at = e.getAttribute("id");
             if(at!=null && at.getValue().equals("c1")){ // id가 c1인 Element를 찾는다
              System.out.println("ID c1 인 요소 발견");
              // 발견된 composer 요소의 자식요소들 중에서 middle_name요소만 선택한다
              Iterator itr2 = e.getDescendants(new ElementFilter("middle_name"));
              // 선택된 "middle_name"을 출력한다
              while(itr2.hasNext()){
               Element e2 = (Element)itr2.next();
               System.out.println(e2.getValue());
              }
             }
            }
        }
        //XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat());
        //outputter.setExpandEmptyElements(true);
        //outputter.output(doc, System.out);
 }
}



다른 웹서버에 저장되어 있는 XML 문서를 읽고 원하는 특정 요소의 값을 출력하는 예제
http://micropilot.tistory.com/attachment/cfile2.uf@113941284A1659CB9A1806.xml
위의 경로에 처리하고자 하는 XML문서가 저장되어 있다고 가정한다(실제로 존재함)

import java.io.*;

import org.jdom.*;
import org.jdom.filter.ElementFilter;
import org.jdom.input.*;
import org.jdom.output.*;
import java.util.*;
import java.net.*;
/* 다른 웹서버에 저장되어 있는 XML문서를 읽어서 특정 요소의 값을 출력하는 예제 */
public class JDOMTest {

 public static void main(String[] args) throws Exception {
  // 네트워크를 연결하는 부분
  URL url = new URL("http://micropilot.tistory.com/attachment/cfile2.uf@113941284A1659CB9A1806.xml");
  URLConnection uc = url.openConnection();
  InputStream is = uc.getInputStream();
  SAXBuilder builder = new SAXBuilder();
  Document doc = builder.build(is);
  // 나머지 소스는 위의 예제와 동일함
  //특정 요소(Element)만 가져올 경우
  Iterator itr = doc.getDescendants(new ElementFilter("composer"));
        while (itr.hasNext()) {
            Content c = (Content) itr.next();
            //System.out.println(c.getValue());
            if(c instanceof Element){
             //System.out.println("요소(Element)발견");
             Element e = (Element)c;
             Attribute at = e.getAttribute("id");
             if(at!=null && at.getValue().equals("c1")){ // id가 c1인 Element를 찾는다
              System.out.println("ID c1 인 요소 발견");
              // 발견된 composer 요소의 자식요소들 중에서 middle_name요소만 선택한다
              Iterator itr2 = e.getDescendants(new ElementFilter("middle_name"));
              // 선택된 "middle_name"을 출력한다
              while(itr2.hasNext()){
               Element e2 = (Element)itr2.next();
               System.out.println(e2.getValue());
              }
             }
            }
        }
        //XMLOutputter outputter = new XMLOutputter(Format.getPrettyFormat());
        //outputter.setExpandEmptyElements(true);
        //outputter.output(doc, System.out);
 }
}


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