How do you automate Javascript minification for your Java web applications?

We are using Ant task to minify js files with YUICompressor during production build and put result into a separated folder. Then we upload those files to a web server.

Here is an example:

<target name="js.minify" depends="js.preprocess">
    <apply executable="java" parallel="false">
        <fileset dir="." includes="foo.js, bar.js"/>
        <arg line="-jar"/>
        <arg path="yuicompressor.jar"/>
        <srcfile/>
        <arg line="-o"/>
        <mapper type="glob" from="*.js" to="*-min.js"/>
        <targetfile/>
    </apply>
</target>

Round-up post

If you post something new in this thread, edit this post to link to yours.

• Ant apply task (using YUI Compressor)
• Custom YUI Compressor Ant task
• Maven YUI Compressor plugin
• Granule (for JSP, JSF, Grails, Ant)
• Ant macros for Google Closure compiler
• wro4j (Maven, servlet filters, plain Java, etc)
• ant-yui-compressor (ant task for compressing JS+CSS)
• JAWR
• Minify Maven Plugin
• humpty
• Ant exec task using Terser