YUI Compressor Maven plugin doesn't compress JS files

maven-2 yui-compressor
hanumant picture hanumant · Oct 1, 2010 · Viewed 10.2k times · Source

I am using YUI Compressor to compress the JS files in my web app.

I have configured the plugin as indicated on the plugin's site.

This is the POM plugin conf:

   <plugin>
    <groupId>net.sf.alchim</groupId>
    <artifactId>yuicompressor-maven-plugin</artifactId>
    <version>0.7.1</version>  
    <executions>
      <execution>
     <phase>compile</phase>
        <goals>
         <goal>jslint</goal>
          <goal>compress</goal>
        </goals>
      </execution>
    </executions>        
    <configuration>
    <failOnWarning>true</failOnWarning>
      <nosuffix>true</nosuffix>
      <force>true</force>
      <aggregations>
       <aggregation>
          <!-- remove files after aggregation (default: false) -->
          <removeIncluded>false</removeIncluded>
          <!-- insert new line after each concatenation (default: false) -->
          <insertNewLine>false</insertNewLine>
          <output>${project.basedir}/${webcontent.dir}/js/compressedAll.js</output>
          <!-- files to include, path relative to output's directory or absolute path-->
          <!--inputDir>base directory for non absolute includes, default to parent dir of output</inputDir-->
          <includes>                
            <include>**/autocomplete.js</include>
            <include>**/calendar.js</include>
            <include>**/dialogs.js</include>
            <include>**/download.js</include>
            <include>**/folding.js</include>
            <include>**/jquery-1.4.2.min.js</include>
            <include>**/jquery.bgiframe.min.js</include>
            <include>**/jquery.loadmask.js</include>
            <include>**/jquery.printelement-1.1.js</include>
            <include>**/jquery.tablesorter.mod.js</include>
            <include>**/jquery.tablesorter.pager.js</include>
            <include>**/jquery.dialogs.plugin.js</include>
            <include>**/jquery.ui.autocomplete.js</include>                
            <include>**/jquery.validate.js</include>  
            <include>**/jquery-ui-1.8.custom.min.js</include>
            <include>**/languageDropdown.js</include>
            <include>**/messages.js</include>
            <include>**/print.js</include>
            <include>**/tables.js</include>
            <include>**/tabs.js</include>
            <include>**/uwTooltip.js</include>
          </includes>
          <!-- files to exclude, path relative to output's directory-->

        </aggregation>
      </aggregations>
    </configuration>
    <dependencies>
         <dependency> 
 <groupId>rhino</groupId>  
  <artifactId>js</artifactId>       
  <scope>compile</scope>  
  <version>1.6R5</version> 
</dependency>  
<dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-plugin-api</artifactId>
        <version>2.0.7</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-project</artifactId>
        <version>2.0.7</version>
        <scope>provided</scope>
    </dependency><dependency>
        <groupId>net.sf.retrotranslator</groupId>
        <artifactId>retrotranslator-runtime</artifactId>
        <version>1.2.9</version>
        <scope>runtime</scope>
    </dependency>

    </dependencies>
  </plugin>

And here is the log at compress time:

These will use the artifact files already in the core ClassRealm instead, to allow them to be included in PluginDescriptor.getArtifacts().


[DEBUG] Configuring mojo 'net.sf.alchim:yuicompressor-maven-plugin:0.7.1:jslint' 
[DEBUG]   (f) failOnWarning = true
[DEBUG]   (f) jswarn = true
[DEBUG]   (f) outputDirectory = C:\test\target\classes
[DEBUG]   (f) project = MavenProject: com.test.test1:test2:19-SNAPSHOT @ C:\test\pom.xml
[DEBUG]   (f) resources = [Resource {targetPath: null, filtering: false, FileSet {directory: C:\test\src,
 PatternSet [includes: {}, excludes: {**/*.class, **/*.java, site/*}]}}]
[DEBUG]   (f) sourceDirectory = C:\test\src\..\js
[DEBUG]   (f) warSourceDirectory = C:\test\src\main\webapp
[DEBUG]   (f) webappDirectory = C:\test\target\test2-19-SNAPSHOT
[DEBUG] -- end configuration --
[INFO] [yuicompressor:jslint {execution: default}]
[INFO] nb warnings: 0, nb errors: 0
[DEBUG] Configuring mojo 'net.sf.alchim:yuicompressor-maven-plugin:0.7.1:compress' -->
[DEBUG]   (f) removeIncluded = false
[DEBUG]   (f) insertNewLine = false
[DEBUG]   (f) output = C:\test\WebContent\js\compressedAll.js
[DEBUG]   (f) includes = [**/autocomplete.js, **/calendar.js, **/dialogs.js, **/download.js, **/folding.js, **/jquery-1.4.2.min.js, **/jquery.bgifram
e.min.js, **/jquery.loadmask.js, **/jquery.printelement-1.1.js, **/jquery.tablesorter.mod.js, **/jquery.tablesorter.pager.js, **/jquery.dialogs.p
lugin.js, **/jquery.ui.autocomplete.js, **/jquery.validate.js, **/jquery-ui-1.8.custom.min.js, **/languageDropdown.js, **/messages.js, **/print.js, *
*/tables.js, **/tabs.js, **/uwTooltip.js]
[DEBUG]   (f) aggregations = [net.sf.alchim.mojo.yuicompressor.Aggregation@65646564]
[DEBUG]   (f) disableOptimizations = false
[DEBUG]   (f) encoding = Cp1252
[DEBUG]   (f) failOnWarning = true
[DEBUG]   (f) force = true
[DEBUG]   (f) gzip = false
[DEBUG]   (f) jswarn = true
[DEBUG]   (f) linebreakpos = 0
[DEBUG]   (f) nomunge = false
[DEBUG]   (f) nosuffix = true
[DEBUG]   (f) outputDirectory = C:\test\target\classes
[DEBUG]   (f) preserveAllSemiColons = false
[DEBUG]   (f) project = MavenProject: com.test.test1:test2:19-SNAPSHOT @ C:\test\pom.xml
[DEBUG]   (f) resources = [Resource {targetPath: null, filtering: false, FileSet {directory: C:\test\src,
 PatternSet [includes: {}, excludes: {**/*.class, **/*.java, site/*}]}}]
[DEBUG]   (f) sourceDirectory = C:\test\src\..\js
[DEBUG]   (f) statistics = true
[DEBUG]   (f) suffix = -min
[DEBUG]   (f) warSourceDirectory = C:\test\src\main\webapp
[DEBUG]   (f) webappDirectory = C:\test\target\test2-19-SNAPSHOT
[DEBUG] -- end configuration --
[INFO] [yuicompressor:compress {execution: default}]
[INFO] generate aggregation : C:\test\WebContent\js\compressedAll.js
[INFO] compressedAll.js (407505b)
[INFO] nb warnings: 0, nb errors: 0
[DEBUG] Configuring mojo 'org.apache.maven.plugins:maven-resources-plugin:2.2:testResources' -->
[DEBUG]   (f) filters = []
[DEBUG]   (f) outputDirectory = C:\test\target\test-classes
[DEBUG]   (f) project = MavenProject: com.test.test1:test2:19-SNAPSHOT @ C:\test\pom.xml
[DEBUG]   (f) resources = [Resource {targetPath: null, filtering: false, FileSet {directory: C:\test\test
, PatternSet [includes: {}, excludes: {**/*.class, **/*.java}]}}]
[DEBUG] -- end configuration --

The problem is, although the files are getting aggregated into one file, it's happening without compression.

The link above uses version 1.1 and the plugin version I am using is 0.7.1. Is this going to make any difference?

Can someone tell what is wrong here?

PS: I have obfuscated some text in the log to follow the compliance rules of my firm, so you may find mismatches in some places.

Answer

David Bernard picture David Bernard · May 1, 2011

From what I read, you don't configure the place from where js file should be checked or compressed (as you don't use the default configuration). You only configure the aggregation.

For quicker response used the issue tracker of yuicompressor-maven-plugin

The solution (copy/paste from project FAQ )

Because :

  • you set <nosuffix>true</nosuffix>

  • your script in under src/main/webapp and maven-war-plugin copy every files from src/main/webapp to target (regardless timestamp,...) and make the war (in the same execution).

Workarounds :

  • move your script dir out from webapp

    <plugin>
  <groupId>@project.groupId@</groupId>
  <artifactId>yuicompressor-maven-plugin</artifactId>
  ...
  <configuration>
    <!-- default ${project.build.sourceDirectory}/../js == src/main/js -->
    <sourceDirectory>src/main/javascript</sourceDirectory>

  • OR exclude "scripts" from the list of files to copy

    <!-- adapted from https://github.com/davidB/yuicompressor-maven-plugin/blob/master/src/it/demo01/pom.xml -->
<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-war-plugin</artifactId>
  <configuration>
    <warSourceExcludes>scripts/**</warSourceExcludes>
  </configuration>
</plugin>

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