개발자(開發者) a developer

log4j.rootLogger=INFO, stdout1, stdout2

log4j.logger.jsp1=INFO, stdout1
log4j.additivity.jsp1=false

log4j.logger.jsp2=INFO, stdout2
log4j.additivity.jsp2=false

log4j.appender.stdout1=org.apache.log4j.ConsoleAppender
log4j.appender.stdout1.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout1.layout.ConversionPattern=jsp1 appender log %d %-5p [%t] %-17c{2} (%13F:%L) %3x - %m%n

log4j.appender.stdout2=org.apache.log4j.ConsoleAppender
log4j.appender.stdout2.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout2.layout.ConversionPattern=jsp2 appender log %d %-5p [%t] %-17c{2} (%13F:%L) %3x - %m%n

<%@ page contentType="text/html;charset=MS949"
 import="org.apache.log4j.Logger" %>

<%!
 static Logger logger1 = Logger.getLogger("jsp1");
%>

<%
logger1.warn("warn");
%>

jsp1 appender log 2005-11-07 13:05:23,687 WARN  [http-8080-Processor5] jsp1 (test_jsp1_appender_jsp.java:48)     - warn

<%@ page contentType="text/html;charset=MS949"
 import="org.apache.log4j.Logger" %>

<%!
 static Logger logger2 = Logger.getLogger("jsp2");
%>

<%
logger2.warn("warn");
%>

jsp2 appender log 2005-11-07 13:05:58,031 WARN  [http-8080-Processor4] jsp2 (test_jsp2_appender_jsp.java:48)     - warn

import java.util.*;
import java.io.*;

import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.poifs.filesystem.*;
import org.apache.poi.poifs.filesystem.POIFSFileSystem.*;
import org.apache.poi.poifs.eventfilesystem.*;

public class InsertImage {
    public static void main(String[] args) throws IOException {
        POIFSFileSystem fs      = new POIFSFileSystem(new FileInputStream("/xxx/test.xls")); // 원본엑셀파일
        HSSFWorkbook    wb      = new HSSFWorkbook(fs);
        HSSFSheet       sheet   = wb.getSheetAt(0);

        drawSheet5( sheet, wb );

        // Write the file out.
        FileOutputStream fileOut = new FileOutputStream("/xxx/img_work.xls"); // 이미지 삽입된 엑셀파일
        wb.write(fileOut);
        fileOut.close();
    }

    private static void drawSheet5( HSSFSheet sheet, HSSFWorkbook wb ) throws IOException {
        // Create the drawing patriarch.  This is the top level container for
        // all shapes. This will clear out any existing shapes for that sheet.
        HSSFPatriarch patriarch = sheet.createDrawingPatriarch();

        HSSFClientAnchor anchor;
        anchor = new HSSFClientAnchor(0,0,0,255,(short)1,4,(short)2,4); // 이미지 크기조절은 여기서..
        anchor.setAnchorType( 2 );
        patriarch.createPicture(anchor, loadPicture( "/xxx/okjsp.jpg", wb )); // 삽입 할 이미지
    }

    private static int loadPicture( String path, HSSFWorkbook wb ) throws IOException {
        int pictureIndex;
        FileInputStream fis = null;
        ByteArrayOutputStream bos = null;

        try {
            fis = new FileInputStream( path);
            bos = new ByteArrayOutputStream( );
            int c;
            while ( (c = fis.read()) != -1) {
                bos.write( c );
            }
            pictureIndex = wb.addPicture( bos.toByteArray(), HSSFWorkbook.PICTURE_TYPE_JPEG  );
        } finally {
            if (fis != null) fis.close();
            if (bos != null) bos.close();
        }
        return pictureIndex;
    }
}

<fileset dir="${server.src}" casesensitive="yes">
  <include name="**/*.java"/>
  <exclude name="**/*Test*"/>
</fileset>

<fileset dir="${server.src}" casesensitive="yes">
  <filename name="**/*.java"/>
  <filename name="**/*Test*" negate="true"/>
</fileset>

<fileset dir="${server.src}" casesensitive="yes">
  <filename name="**/*.java"/>
  <not>
    <filename name="**/*Test*"/>
  </not>
</fileset>

<fileset dir="${server.src}" casesensitive="yes">
  <include name="**/*.java, **/*.properties"/>
</fileset>

<fileset dir="${server.src}" casesensitive="yes">
  <include name="**/*.java"/>
  <include name="**/*.properties"/>
</fileset>

     **/*~
     **/#*#
     **/.#*
     **/%*%
     **/._*
     **/CVS
     **/CVS/**
     **/.cvsignore
     **/SCCS
     **/SCCS/**
     **/vssver.scc
     **/.svn
     **/.svn/**
     **/.DS_Store

<dirset dir="${build.dir}">
  <include name="apps/**/classes"/>
  <exclude name="apps/**/*Test*"/>
</dirset>

<patternset id="non.test.sources">
  <include name="**/*.java"/>
  <exclude name="**/*Test*"/>
</patternset>
...
<fileset dir="${server.src}">
  <patternset refid="non.test.sources"/>
</fileset>
...
<fileset dir="${server.src}">
  <patternset refid="non.test.sources">
    <include name="**/*.java"/>
  </patternset>

</fileset>

<path id="base.path">
  <pathelement path="lib/struts.jar;lib/log4j.jar"/>
  <pathelement location="classes"/>
</path>
...
<classpath refid="base.path"/>
...

파일 하나 복사

<copy file="myfile.txt" tofile="mycopy.txt"/>

파일 하나를 디렉토리에 복사

<copy file="myfile.txt" todir="../some/other/dir"/>

디렉토리를 다른 디렉토리로 복사 

<copy todir="../new/dir">
    <fileset dir="src_dir"/>
</copy>

파일 집합을 디렉토리에 복사

<copy todir="../dest/dir">
    <fileset dir="src_dir">
      <exclude name="**/*.java"/>
    </fileset>
</copy>

<copy todir="../dest/dir">
    <fileset dir="src_dir" excludes="**/*.java"/>
</copy>

파일 집합을 디렉토리에 복사하며 파일명 끝에 .bak을 추가하여 복사

<copy todir="../backup/dir">
    <fileset dir="src_dir"/>
    <globmapper from="*" to="*.bak"/>
</copy>

파일집합을 디렉토리에 복사하며 파일집합중 TITLE 이란 STRING을 Foo Bar로 대체하며 복사

<copy todir="../backup/dir">
    <fileset dir="src_dir"/>
    <filterset>
      <filter token="TITLE" value="Foo Bar"/>
    </filterset>
</copy>

하나의 파일을 삭제
<delete file="/lib/ant.jar"/>

하나의 디렉토리를 삭제 (이하 디렉토리 및 파일 모두 삭제됨)
<delete dir="lib"/>

현재 디렉토리로 부터 모든 파일중 .bak 파일은 모두 삭제
<delete>
    <fileset dir="." includes="**/*.bak"/>
</delete>

하나의 디렉토리를 삭제하며 빈 디렉토리라도 모두 삭제 (build 자신의 디렉토리도 삭제)
<delete includeEmptyDirs="true">
    <fileset dir="build"/>
</delete>

build 이하 모든 파일을 삭제하며 빈 디렉토리라도 모두 삭제 (build 자신의 디렉토리는 삭제되지 않음)
<delete includeemptydirs="true">
    <fileset dir="build" includes="**/*"/>
</delete>

"${dist}" 디렉토리를 생성한다

<mkdir dir="${dist}"/>

"${dist}/lib" 디렉토리를 생성한다

<mkdir dir="${dist}/lib"/>

하나의 파일을 이동시킵니다 (rename과 동일)
<move file="file.orig" tofile="file.moved"/>

하나의 파일을 디렉토리로 이동시킵니다
<move file="file.orig" todir="dir/to/move/to"/>

디렉토리를 새로운 디렉토리로 이동시킵니다
<move todir="new/dir/to/move/to">
    <fileset dir="src/dir"/>
</move>

위의 task와 동일하며 ant 1.6.3부터 지원합니다
<move file="src/dir" tofile="new/dir/to/move/to"/>

파일집합을 새로운 디렉토리로 이동시킵니다
<move todir="some/new/dir">
    <fileset dir="my/src/dir">
      <include name="**/*.jar"/>
      <exclude name="**/ant.jar"/>
    </fileset>
</move>

.bak을 제외한 모든 파일에 .bak을 추가시키며 이동시킵니다
<move todir="my/src/dir" includeemptydirs="false">
    <fileset dir="my/src/dir">
      <exclude name="**/*.bak"/>
    </fileset>
    <mapper type="glob" from="*" to="*.bak"/>
</move>

<path id="compile.classpath">

    <pathelement location="${catalina.home}/common/classes"/>
    <fileset dir="${web.home}/WEB-INF/lib">
      <include name="*.jar"/>
    </fileset>
</path>

가장 일반직인 컴파일 태그 compile.classpath 는 앞의 path 태그에서 정의됨

<javac srcdir="${src}"

          destdir="${build}">

     <classpath refid="compile.classpath"/>

</javac>

include, exclude, debug등을 포함한 컴파일 태그

<javac srcdir="${src}"
          destdir="${build}"
          includes="mypackage/p1/**,mypackage/p2/**"
          excludes="mypackage/p1/testpackage/**"
          classpath="xyz.jar"
          debug="on"
/>

srcdir 대신 <scr> 태그를 이용한 컴파일 태그

<javac destdir="${build}"
         classpath="xyz.jar"
         debug="on">
    <src path="${src}"/>
    <src path="${src2}"/>
    <include name="mypackage/p1/**"/>
    <include name="mypackage/p2/**"/>
    <exclude name="mypackage/p1/testpackage/**"/>
</javac>

간단한 사용예

<javadoc sourcepath="${src.home}"
               destdir="${dist.home}/docs/api"
               packagenames="*">
       <classpath refid="compile.classpath"/>
</javadoc>

아래 3가지 사용예는 동일한 의미이다

<javadoc

           packagenames="com.dummy.test.*"
           sourcepath="src"
           excludepackagenames="com.dummy.test.doc-files.*"
           defaultexcludes="yes"
           destdir="docs/api"
           author="true"
           version="true"
           use="true"
           windowtitle="Test API">
    <doctitle><![CDATA[<h1>Test</h1>]]></doctitle>
    <bottom><![CDATA[<i>Copyright &#169; 2000 Dummy Corp. All Rights Reserved.</i>]]></bottom>
    <tag name="todo" scope="all" description="To do:"/>
    <group title="Group 1 Packages" packages="com.dummy.test.a*"/>
    <group title="Group 2 Packages" packages="com.dummy.test.b*:com.dummy.test.c*"/>
    <link offline="true" href="http://java.sun.com/products/jdk/1.2/docs/api/" packagelistLoc="C:\tmp"/>
    <link href="http://developer.java.sun.com/developer/products/xml/docs/api/"/>
</javadoc>

<javadoc
           destdir="docs/api"
           author="true"
           version="true"
           use="true"
           windowtitle="Test API">

    <packageset dir="src" defaultexcludes="yes">
      <include name="com/dummy/test/**"/>
      <exclude name="com/dummy/test/doc-files/**"/>
    </packageset>

    <doctitle><![CDATA[<h1>Test</h1>]]></doctitle>
    <bottom><![CDATA[<i>Copyright &#169; 2000 Dummy Corp. All Rights Reserved.</i>]]></bottom>
    <tag name="todo" scope="all" description="To do:"/>
    <group title="Group 1 Packages" packages="com.dummy.test.a*"/>
    <group title="Group 2 Packages" packages="com.dummy.test.b*:com.dummy.test.c*"/>
    <link offline="true" href="http://java.sun.com/products/jdk/1.2/docs/api/" packagelistLoc="C:\tmp"/>
    <link href="http://developer.java.sun.com/developer/products/xml/docs/api/"/>
</javadoc>

<javadoc
           destdir="docs/api"
           author="true"
           version="true"
           use="true"
           windowtitle="Test API">

    <fileset dir="src" defaultexcludes="yes">
      <include name="com/dummy/test/**"/>
      <exclude name="com/dummy/test/doc-files/**"/>
    </fileset>

    <doctitle><![CDATA[<h1>Test</h1>]]></doctitle>
    <bottom><![CDATA[<i>Copyright &#169; 2000 Dummy Corp. All Rights Reserved.</i>]]></bottom>
    <tag name="todo" scope="all" description="To do:"/>
    <group title="Group 1 Packages" packages="com.dummy.test.a*"/>
    <group title="Group 2 Packages" packages="com.dummy.test.b*:com.dummy.test.c*"/>
    <link offline="true" href="http://java.sun.com/products/jdk/1.2/docs/api/" packagelistLoc="C:\tmp"/>
    <link href="http://developer.java.sun.com/developer/products/xml/docs/api/"/>
</javadoc>

thirdparty/libs/jdbc1.jar
thirdparty/libs/jdbc2.jar
build/main/com/myco/myapp/Servlet.class
src/metadata/myapp.xml
src/html/myapp/index.html
src/jsp/myapp/front.jsp
src/graphics/images/gifs/small/logo.gif
src/graphics/images/gifs/large/logo.gif

위의 파일을 WAR로 구성해 보자

<war destfile="myapp.war" webxml="src/metadata/myapp.xml">
  <fileset dir="src/html/myapp"/>
  <fileset dir="src/jsp/myapp"/>
  <lib dir="thirdparty/libs">
    <exclude name="jdbc1.jar"/>
  </lib>
  <classes dir="build/main"/>
  <zipfileset dir="src/graphics/images/gifs"
              prefix="images"/>
</war>

WAR task 후 다음과 같이 구성된다

WEB-INF/web.xml
WEB-INF/lib/jdbc2.jar
WEB-INF/classes/com/myco/myapp/Servlet.class
META-INF/MANIFEST.MF
index.html
front.jsp
images/small/logo.gif
images/large/logo.gif

  ① Lucene java : Lucene의 핵심 부분으로 indexing 과 search 구현 영역입니다

  ② Nutch : web search application을 지원합니다 (이슈!)

                 mp3, pdf, ms 등 다양한 문서를 검색할수 있도록 제공해 주지만

                 아직까지는 0.6 버젼이네요

  ③ Lucene4c :  Lucene의 C 기반의 검색엔진입니다 아직까진 Incubator에 있군요

C:\Documents and Settings\Administrator>cd c:\

C:\>cd lu*

C:\lucene-1.4.3>set classpath=C:\lucene-1.4.3\lucene-1.4.3.jar;C:\lucene-1.4.3\lucene-demos-1.4.3.jar

C:\lucene-1.4.3>set
ALLUSERSPROFILE=C:\Documents and Settings\All Users
ANT_HOME=C:\java\Jeus42\lib\etc\ant
APPDATA=C:\Documents and Settings\Administrator\Application Data
CLASSPATH=C:\lucene-1.4.3\lucene-1.4.3.jar;C:\lucene-1.4.3\lucene-demos-1.4.3.jar

...

C:\lucene-1.4.3>
C:\lucene-1.4.3>java org.apache.lucene.demo.IndexFiles C:\lucene-1.4.3\docs
adding C:\lucene-1.4.3\docs\api\allclasses-frame.html
adding C:\lucene-1.4.3\docs\api\allclasses-noframe.html
adding C:\lucene-1.4.3\docs\api\constant-values.html
adding C:\lucene-1.4.3\docs\api\deprecated-list.html
adding C:\lucene-1.4.3\docs\api\help-doc.html
adding C:\lucene-1.4.3\docs\api\index-all.html
adding C:\lucene-1.4.3\docs\api\index.html
adding C:\lucene-1.4.3\docs\api\org\apache\lucene\analysis\Analyzer.html
...
18500 total milliseconds
C:\lucene-1.4.3>

C:\lucene-1.4.3>
C:\lucene-1.4.3>java org.apache.lucene.demo.SearchFiles
Query: lucene
Searching for: lucene
324 total matching documents
0. C:\lucene-1.4.3\docs\api\allclasses-frame.html
1. C:\lucene-1.4.3\docs\api\allclasses-noframe.html
2. C:\lucene-1.4.3\docs\api\index-all.html
3. C:\lucene-1.4.3\docs\api\overview-frame.html
4. C:\lucene-1.4.3\docs\api\overview-tree.html
5. C:\lucene-1.4.3\docs\api\org\apache\lucene\queryParser\MultiFieldQueryParser.html
6. C:\lucene-1.4.3\docs\lucene-sandbox\index.html
7. C:\lucene-1.4.3\docs\resources.html
8. C:\lucene-1.4.3\docs\api\org\apache\lucene\search\class-use\Query.html
9. C:\lucene-1.4.3\docs\api\org\apache\lucene\index\class-use\Term.html
more (y/n) ?

SimpleAnalyzer

  non-letters 를 기준으로 문자를 파싱합니다
  non-letters는 java.lang.Character.isLetter()에 의해 정의된 것을 사용합니다
  이 Analyzer는 대부분의 유럽권 언어에 적당하며 아시아권 언어에는 terrible 이라고 되어 있군요 -_-;
  대소문자 구분 안합니다

StopAnalyzer

  기본적으로 SimpleAnalyzer와 같으나 StopFilter를 두어 StopWord를 제거한 후 분석합니다
  StopWord란 일반적으로 검색시 유용하지 않는 단어들을 말합니다
  (a,an,and,are,as,at,be,but,by,for,if,in,into,is,it,no,not,of,on,or,s,such,t,that,the,their,then,there,these,they,this,to,was,will,with) 역시나 대소문자 구분 안합니다

StandardAnalyzer 

  대부분 유렵권 언어들에 최적화 되어있는 Analyzer 입니다
  StopFilter를 사용하며 대소문자 구분 안합니다

WhitespaceAnalyzer 

  whitespace, 즉 공백문자를 가지고 text를 나누는 방식입니다
  가장 기본적이면서도 무식한 방식입니다
  불행히도 한글검색은 이 WhitespaceAnalyzer 만 가능하며 대소문자 구분 합니다

  (왜 이것만 대소문자 구분 하냥 -_-)

이밖에도 GermanAnalyzer, PerFieldAnalyzerWrapper, RussianAnalyzer등이 있으며
이름에서도 알수있듯이 그다지 한글과 친하지 않은듯 합니다 -.-;;

IndexWriter writer = new IndexWriter("index", new StandardAnalyzer(), true);

writer.addDocument(FileDocument.Document(file));

writer.optimize();

writer.close();

class IndexFiles {

  public static void main(String[] args) throws IOException {

    String usage = "java " + IndexFiles.class + " <root_directory>";
   
    // 파라미터(소스디렉토리)를 입력하지 않았다면 사용법을 출력해 줍니다
    if (args.length == 0) {
      System.err.println("Usage: " + usage);
      System.exit(1);
    }

    Date start = new Date();
    try {
   
      // 선택한 Analyzer를 이용하여 IndexWriter를 생성합니다
      IndexWriter writer = new IndexWriter("index", new StandardAnalyzer(), true);
     
      // 소스디렉토리를 디비가며 문서를 파싱하여 인덱스에 추가하는 재귀함수
      indexDocs(writer, new File(args[0]));

      // 인덱싱한 여러 segment들을 검색에 알맞도록 하나로 합치는 작업
      writer.optimize();
     
      // 반드시 close()
      writer.close();

      Date end = new Date();

      // 인덱싱 처리시간 출력
      System.out.print(end.getTime() - start.getTime());
      System.out.println(" total milliseconds");

    } catch (IOException e) {
      System.out.println(" caught a " + e.getClass() +
       "\n with message: " + e.getMessage());
    }
  }

  // 소스 파일들을 읽어가며 파싱하여 인덱스에 추가하는 재귀함수
  public static void indexDocs(IndexWriter writer, File file)
    throws IOException {

    if (file.canRead()) {
      if (file.isDirectory()) {
        String[] files = file.list();

        if (files != null) {
          for (int i = 0; i < files.length; i++) {
            // 자기자신을 호출
            indexDocs(writer, new File(file, files[i]));
          }
        }
      } else {
        System.out.println("adding " + file);
        try {
          // 문서를 인덱스에 추가

          // FileDocument는 해당 file의 정보를 파싱해줌
          writer.addDocument(FileDocument.Document(file));
        }
       
        // 윈도에서 temporary filese등이 access denied로  exception이 발생할 수 있음
        catch (FileNotFoundException fnfe) {
          ;
        }
      }
    }
  }
}

Searcher searcher = new IndexSearcher("index");

Query query = QueryParser.parse(line, "contents", analyzer);

Hits hits = searcher.search(query);

searcher.close();

class SearchFiles {

  public static void main(String[] args) {
    try {

      // index 폴더를 파라미터로 넘겨 IndexSearcher를 생성합니다
      Searcher searcher = new IndexSearcher("index");
     
      // 생성된 index와 동일한 Analyzer를 생성하여 넘겨줍니다
      Analyzer analyzer = new StandardAnalyzer();

      // 검색어를 입력받기 위한 reader 입니다
      BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

      while (true) {
        System.out.print("Query: ");
        String line = in.readLine();
       
        if (line.length() == -1)
          break;

        // 입력받은 질의를 파싱합니다
        Query query = QueryParser.parse(line, "contents", analyzer);
        System.out.println("Searching for: " + query.toString("contents"));

        // 팡싱된 질의로 검색을 합니다       
        Hits hits = searcher.search(query);
        System.out.println(hits.length() + " total matching documents");
       
        // 검색 결과 목록을 10개씩 보여줍니다
        final int HITS_PER_PAGE = 10;
        for (int start = 0; start < hits.length(); start += HITS_PER_PAGE) {
          int end = Math.min(hits.length(), start + HITS_PER_PAGE);
          for (int i = start; i < end; i++) {

            // 검색 결과로 부터 문서를 가져옵니다
            Document doc = hits.doc(i);

            // 문서정보를 출력합니다

            String path = doc.get("path");
            if (path != null) {
                  System.out.println(i + ". " + path);
            } else {
                  String url = doc.get("url");
              if (url != null) {
                System.out.println(i + ". " + url);
                System.out.println("   - " + doc.get("title"));
              } else {
                System.out.println(i + ". " + "No path nor URL for this document");
              }
            }
          }

          if (hits.length() > end) {
            System.out.print("more (y/n) ? ");
            line = in.readLine();
            if (line.length() == 0 || line.charAt(0) == 'n')
              break;
          }
        }
      }
     
      searcher.close();
       
    } catch (Exception e) {
      System.out.println(" caught a " + e.getClass() +
         "\n with message: " + e.getMessage());
    }
  }
}

public class ToStringTest {

    public static void main(String args[]) {

        TestClass test = new TestClass();
        System.out.println(test.toString());
    }

}

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

public class TestClass {

    private String boardId;
    private int boardNo;

    public TestClass() {}

    public String toString() {
        return ToStringBuilder.reflectionToString(this);

    }

}

public String toString() {
    return ToStringBuilder.reflectionToString(this);

}

public String toString() {

    return ToStringBuilder.reflectionToString(this);

}

출력 결과

TestClass@1cd2e5f[boardId=<null>,boardNo=0]

public String toString() {

    return ToStringBuilder.reflectionToString(this, ToStringStyle.DEFAULT_STYLE);

}

출력 결과

TestClass@1cd2e5f[boardId=<null>,boardNo=0]

public String toString() {

    return ToStringBuilder.reflectionToString(this, ToStringStyle.MULTI_LINE_STYLE);

}

출력 결과

TestClass@1cd2e5f[
  boardId=<null>
  boardNo=0
]

public String toString() {

    return ToStringBuilder.reflectionToString(this, ToStringStyle.NO_FIELD_NAMES_STYLE);

}

출력 결과

TestClass@1cd2e5f[<null>,0]

public String toString() {

    return ToStringBuilder.reflectionToString(this, ToStringStyle.SIMPLE_STYLE);

}

출력 결과

<null>,0

public String toString() {

    return new ToStringBuilder(this).append("boardId", boardId).append("boardNo", boardNo).toString();

}

-. addObjectCreate(element 경로, 자바빈크래스) : 어떤 element 경로를 자바빈클래스로 매칭?

-. addSetProperties(element 속성명, 자바빈프로퍼티명) : 어떤 element 속성을 자바빈 변수에 설정?

-. addBeanPropertySetter(element 경로, 자바빈프로퍼티명) : 어떤 element 경로를 자바빈 변수에 설정?

-. addSetNext(element 경로, 자바빈함수) : 어떤 element 경로를 자바빈 함수에?

<a>                 -- Matches pattern "a"
    <b>             -- Matches pattern "a/b"
        <c/>        -- Matches pattern "a/b/c"
        <c/>        -- Matches pattern "a/b/c"
    </b>
    <b>             -- Matches pattern "a/b"
        <c/>        -- Matches pattern "a/b/c"
        <c/>        -- Matches pattern "a/b/c"
        <c/>        -- Matches pattern "a/b/c"
    </b>
</a>

...

digester.addObjectCreate("a/b", B.class);

digester.addBeanPropertySetter("a/b/c", "c");

...

<?xml version="1.0" encoding="EUC-KR"?>

<connection-sources>
   <description>This script is a connection description</description>

   <JDBCConnectionPool name="mysql">
      <description>Mysql Connection Source</description>
      <defaultAutoCommit>true</defaultAutoCommit>
      <defaultReadOnly>false</defaultReadOnly>
      <driverClassName>org.gjt.mm.mysql.Driver</driverClassName>
      <maxActive>10</maxActive>
      <maxIdle>10</maxIdle>
      <maxWait>10000</maxWait>
      <username>unicorn</username>
      <password>iloveyou</password>
      <url>jdbc:mysql://localhost/unicorn</url>
   </JDBCConnectionPool>

   <JDBCConnectionPool name="oracle">
      <description>Oracle Connection Source</description>
      <defaultAutoCommit>true</defaultAutoCommit>
      <defaultReadOnly>false</defaultReadOnly>
      <driverClassName>oracle.jdbc.driver.OracleDriver</driverClassName>
      <maxActive>10</maxActive>
      <maxIdle>10</maxIdle>
      <maxWait>10000</maxWait>
      <username>unicorn</username>
      <password>iloveyoutoo</password>
      <url>jdbc:oracle:thin:@localhost:1521:unicorn</url>
   </JDBCConnectionPool>

</connection-sources>

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

  <servlet>
     <servlet-name>connectioninitialize</servlet-name>
     <servlet-class>db.ConnectionInitialize</servlet-class>
     <init-param>
        <param-name>config</param-name>
        <param-value>C:\Tomcat 5.0\webapps\ROOT\WEB-INF\classes\config.xml</param-value>
     </init-param>
     <load-on-startup>1</load-on-startup>
  </servlet>
   
</web-app>

package db.jdbc;

import java.util.HashMap;

public class ConnectionSources {

	private String description;
	private HashMap source = new HashMap();
	
	public void setDescription(String description) {
		this.description = description;
	}
	
	public void addSource(JDBCConnectionPool source) {
		this.source.put(source.getName(), source);
	}
	
	public String getDescription() {
		return this.description;
	}
	
	public JDBCConnectionPool getSource(String name) {
		return (JDBCConnectionPool)this.source.get(name);
	}
}

package db.jdbc;

public class JDBCConnectionPool {

	private String name;
	private String description;
	private boolean defaultAutoCommit;
	private boolean defaultReadOnly;
	private String driverClassName;
	private int maxActive;
	private int maxIdle;
	private int maxWait;
	private String username;
	private String password;
	private String url;
	
       //for debug
	public void print() {
		String toString = "name : "+name+"\n"+
			"description : "+description+"\n"+
			"defaultAutoCommit : "+defaultAutoCommit+"\n"+	
			"defaultReadOnly : "+defaultReadOnly+"\n"+	
			"driverClassName : "+driverClassName+"\n"+	
			"maxActive : "+maxActive+"\n"+	
			"maxIdle : "+maxIdle+"\n"+	
			"maxWait : "+maxWait+"\n"+	
			"username : "+username+"\n"+	
			"password : "+password+"\n"+	
			"url : "+url;
		System.out.println(toString);
	}
	
	public void setName(String name) {
		this.name = name;
	}
	
	public void setDescription(String description) {
		this.description = description;
	}
	
	public void setDefaultAutoCommit(boolean defaultAutoCommit) {
		this.defaultAutoCommit = defaultAutoCommit;
	}

	public void setDefaultReadOnly(boolean defaultReadOnly) {
		this.defaultReadOnly = defaultReadOnly;
	}
	
	public void setDriverClassName(String driverClassName) {
		this.driverClassName = driverClassName;
	}
	
	public void setMaxActive(int maxActive) {
		this.maxActive = maxActive;
	}
	
	public void setMaxIdle(int maxIdle) {
		this.maxIdle = maxIdle;
	}
	
	public void setMaxWait(int maxWait) {
		this.maxWait = maxWait;
	}
	
	public void setUsername(String username) {
		this.username = username;
	}
	
	public void setPassword(String password) {
		this.password = password;
	}
	
	public void setUrl(String url) {
		this.url = url;
	}
	
	public String getName() {
		return this.name;
	}
	
	public String getDescription() {
		return this.description;
	}
	
	public boolean getDefaultAutoCommit() {
		return this.defaultAutoCommit;
	}
	
	public boolean getDefaultReadOnly() {
		return this.defaultReadOnly;
	}
	
	public String getDriverClassName() {
		return this.driverClassName;
	}
	
	public int getMaxActive() {
		return this.maxActive;
	}
	
	public int getMaxIdle() {
		return this.maxIdle;
	}
	
	public int getMaxWait() {
		return this.maxWait;
	}
	
	public String getUsername() {
		return this.username;
	}
	
	public String getPassword() {
		return this.password;
	}
	
	public String getUrl() {
		return this.url;
	}
}

package db;

import java.sql.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

import org.apache.commons.pool.ObjectPool;
import org.apache.commons.pool.impl.GenericObjectPool;
import org.apache.commons.dbcp.ConnectionFactory;
import org.apache.commons.dbcp.PoolingDriver;
import org.apache.commons.dbcp.PoolableConnectionFactory;
import org.apache.commons.dbcp.DriverManagerConnectionFactory;

import org.apache.commons.digester.Digester;
import java.io.*;
import org.xml.sax.SAXException;

import db.jdbc.ConnectionSources;
import db.jdbc.JDBCConnectionPool;

public class ConnectionInitialize extends HttpServlet {

	public void init() throws ServletException {

		String config = null;
		// web.xml의 배치스크립트의 파라미터이름을 가져온다
		Enumeration names = getServletConfig().getInitParameterNames();
		do {
			if(!names.hasMoreElements())
			break;
			String name = (String)names.nextElement();
			String value = getServletConfig().getInitParameter(name).trim();

			System.out.println(name+" : "+value);

			// config에 정의된 XML 파일을 가져온다
			if (name.startsWith("config"))
 				config = value;
		} while(true);

		//Digester를 생성하고
		Digester digester = new Digester();
		//XML 유효성을 검증할것인가?
		digester.setValidating(false);

		//connection-sources 요소를 ConnectionSources.class 객체에 저장하겠다
		digester.addObjectCreate("connection-sources",
		                          ConnectionSources.class);

		//connection-sources/description 요소를
		//ConnectionSources.class의 description 변수에 저장하겠다
		digester.addBeanPropertySetter("connection-sources/description",
						"description");

		//connection-sources/JDBCConnectionPool 요소를 JDBCConnectionPool.class 객체에저장하겠다
		digester.addObjectCreate("connection-sources/JDBCConnectionPool",
		                         db.jdbc.JDBCConnectionPool.class);

		//connection-sources/JDBCConnectionPool 요소의 name 속성을
		//JDBCConnectionPool.class의 name 변수에 저장하겠다
		digester.addSetProperties("connection-sources/JDBCConnectionPool", "name", "name");

		//connection-sources/JDBCConnectionPool/description 을
		//JDBCConnectionPool.class 객에의 description 변수에 저장하겠다
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/description",
                                       "description");

		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/defaultAutoCommit",
                                       "defaultAutoCommit");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/defaultReadOnly",
                                       "defaultReadOnly");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/driverClassName",
                                       "driverClassName");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/maxActive",
                                       "maxActive");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/maxIdle",
                                       "maxIdle");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/maxWait",
                                       "maxWait");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/username",
                                       "username");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/password",
                                       "password");
		digester.addBeanPropertySetter("connection-sources/JDBCConnectionPool/url", "url");

		//connection-sources/JDBCConnectionPool을
		//ConnectionResources.class의 addSource를 이용하여 반복적으로 추가하겠다
		digester.addSetNext("connection-sources/JDBCConnectionPool", "addSource");

		try {
			File file = new File(config);
			//digester 파싱 및 결과 리턴
			ConnectionSources connectionSources =
                                                             (ConnectionSources)digester.parse(file);

			System.out.println(connectionSources.getDescription());
			JDBCConnectionPool mysql = connectionSources.getSource("mysql");
			mysql.print(); //디버깅
			JDBCConnectionPool oracle = connectionSources.getSource("oracle");
			oracle.print(); //디버깅

			//이부분 이하는 Commons-dbcp 부분을 참조하기 바란다
			setupDriver(mysql.getName(),
				mysql.getDriverClassName(),
				mysql.getUrl(),
				mysql.getUsername(),
				mysql.getPassword(),
				mysql.getDefaultAutoCommit(),
				mysql.getDefaultReadOnly(),
				mysql.getMaxActive(),
				mysql.getMaxIdle(),
				mysql.getMaxWait());

			setupDriver(oracle.getName(),
				oracle.getDriverClassName(),
				oracle.getUrl(),
				oracle.getUsername(),
				oracle.getPassword(),
				oracle.getDefaultAutoCommit(),
				oracle.getDefaultReadOnly(),
				oracle.getMaxActive(),
				oracle.getMaxIdle(),
				oracle.getMaxWait());

		} catch (FileNotFoundException filenotfoundexception) {
			System.out.println("Config file not found");
			filenotfoundexception.printStackTrace();
		} catch (Exception exception) {
			exception.printStackTrace();
		}
	}

	public void setupDriver(String poolName,
			String driverClassName,
			String url,
			String username,
			String password,
			boolean defaultAutoCommit,
			boolean defaultReadOnly,
			int maxActive,
			int maxIdle,
			long maxWait) throws Exception {
		try {
		    Class.forName(driverClassName);
		} catch (ClassNotFoundException classnotfoundexception) {
			System.out.println(driverClassName+" is not found");
		    classnotfoundexception.printStackTrace();
		    throw classnotfoundexception;
		}
		
		GenericObjectPool connectionPool = new GenericObjectPool(null);
		connectionPool.setMaxActive(maxActive);
		connectionPool.setMaxIdle(maxIdle);
		connectionPool.setMaxWait(maxWait);
		
		ConnectionFactory connectionFactory
			= new DriverManagerConnectionFactory(url, username, password);
		
		PoolableConnectionFactory poolableConnectionFactory
			= new PoolableConnectionFactory(connectionFactory,
		                                   connectionPool,
		                                   null,
		                                   null,
		                                   defaultReadOnly,
		                                   defaultAutoCommit);
		
		Class.forName("org.apache.commons.dbcp.PoolingDriver");
		PoolingDriver driver = (PoolingDriver) DriverManager.getDriver("jdbc:apache:commons:dbcp:");
		
		driver.registerPool(poolName,connectionPool);    
	}
}

package db;

public interface ConnectionContext {
	public java.sql.Connection getConnection();
	public void rollback();
	public void commit();
	public void release();
}

package db;

import java.sql.Connection;
import java.sql.DriverManager;
import javax.sql.DataSource;

public class ConnectionResource implements ConnectionContext {
	private Connection connection = null;
	private boolean transaction = false;

    public ConnectionResource(String poolName) throws Exception {
    	init(false, poolName);	
    }
    
    public ConnectionResource(boolean transaction, String poolName) throws Exception {
    	init(transaction, poolName);
    }
    
    public void init(boolean transaction, String poolName) throws Exception {
    	this.transaction = transaction;
    	connection = DriverManager.getConnection("jdbc:apache:commons:dbcp:"+poolName);
       if (transaction) connection.setAutoCommit(false);
    	if (connection == null) throw new Exception("fail to get connection");
    }
    	
    public Connection getConnection() {		
		return connection;
    }

	public void rollback() {
		if (transaction) {
			if (connection != null) try { connection.rollback(); } catch (Exception e) {}
		}
	}

	public void commit() {
		if (transaction) {
			if (connection != null) try { connection.commit(); } catch (Exception e) {}
		}
	}

	public void release() { {
		if (connection != null) {
			if (transaction) {
				try { connection.setAutoCommit(true); } catch (Exception e) {}
			}
			try { connection.close(); } catch (Exception e) {}
		}
    }
}

<%@ page contentType="text/html;charset=EUC_KR" %>
<%@ page import="java.sql.*,db.*" %>

<%

ConnectionContext mysqlContext = new ConnectionResource("mysql");
// 혹은 ConnectionContext oracleContext = new ConnectionResource("oracle");

Connection connection = null;

try {

    connection = mysqlContext.getConnection();
    out.println(connection);

} catch (Exception exception) {
    exception.printStackTrace();
} finally {
    if (connection != null) try { mysqlContext.release(); } catch (Exception exception) {}
}

%>