Java 에서 쓸 수 있는 Web Resource Compressor 관련 Framework 에 대해 간단히 소개해보고자 한다.
Web Resource Compressor 란 html, javascript, css 파일에 대한 Minifier, Beautifier 등의 기능을 수행하는 것을 말한다.
일종의 Web Resource 최적화 Framework 중 하나이다.
- Introduction
- Minifier
- HTML / XML
- HTML Compressor and MinifierHTML
- Beautifier
- HTML / JavaScript / CSS
- js-beautify
- Project Home: http://jsbeautifier.org/
- Library: beautify.js, beautify-css.js, beautify-html.js (v 1.3.2)
- Release Date: 2013-04-29
- License: MIT License
- 참고
- js-beautify 는 javascript 라이브러리 이기때문에 JAVA 에서 사용하기 위해서는 Rhino 엔진을 사용한다.
- How to use?
- HTML Minifier - HTML Compressor
public void compress(InputStream source, OutputStream target) throws IOException {
HtmlCompressor compressor = new HtmlCompressor();
compressor.setCompressJavaScript(true); // compress inline css
compressor.setCompressCss(true); // compress inline javascript
String compressedHtml = compressor.compress( IOUtil.getString( source, true ) );
target.write( compressedHtml.getBytes() );
}
- XML Minifier - HTML Compressor
public void compress(InputStream source, OutputStream target) throws IOException {
XmlCompressor compressor = new XmlCompressor();
String compressedXml = compressor.compress( IOUtil.getString( source, true ) );
target.write( compressedXml.getBytes() );
}
- JavaScript Minifier - YUI Compressor
public void compress( InputStream source, OutputStream target ) throws EvaluatorException, IOException {
InputStreamReader reader = null;
OutputStreamWriter writer = null;
try {
reader = new InputStreamReader(source);
writer = new OutputStreamWriter(target);
JavaScriptCompressor compressor = new JavaScriptCompressor( reader,new ErrorReporter() {
@Override
public void warning(String message, String sourceName, int line, String lineSource, int lineOffset) {
if (line < 0) {
logger.warn(message);
} else {
String logMessage = line + " : " + lineOffset + " : " + message;
logger.warn(logMessage);
}
}
@Override
public void error(String message, String sourceName, int line, String lineSource, int lineOffset) {
if (line < 0) {
logger.error(message);
} else {
String logMessage = line + " : " + lineOffset + " : " + message;
logger.error(logMessage);
}
}
@Override
public EvaluatorException runtimeError(String message, String sourceName, int line, String lineSource, int lineOffset) {
error(message, sourceName, line, lineSource, lineOffset);
return new EvaluatorException(message);
}
});
// (out, linebreak, munge, verbose, preserveAllSemiColons, disableOptimizations)
compressor.compress( writer, -1, true, false, true, false);
} catch (EvaluatorException e) {
throw e;
} catch (IOException e) {
throw e;
} finally {
if ( reader != null ) { reader.close() };
if ( writer != null ) { writer.close() };
}
}
- CSS Minifier - YUI Compressor
public void compress(InputStream source, OutputStream target) throws IOException {
InputStreamReader reader = null;
OutputStreamWriter writer = null;
try {
reader = new InputStreamReader(source);
writer = new OutputStreamWriter(target);
CssCompressor compressor = new CssCompressor(reader);
compressor.compress(writer, -1);
} catch (IOException e) {
throw e;
} finally {
if ( reader != null ) { reader.close() };
if ( writer != null ) { writer.close() };
}
}
