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JBoss 7.1.1.Final 上で Primefaces 4.0 を実行しています。JavaScript と CSS ファイルを圧縮して結合するために、Google Webutilities ( https://code.google.com/p/webutilities/ ) を使用しています。ページで PageSpeed インサイトを実行すると、すべてのカスタム css および js ファイルが圧縮されているように見え、ページに問題が出力されません。しかし、すべての Primefaces リソースがすべてのフィルターをスキップしているようです。これが私のwebutilities構成です：

<!-- UTF-8 Encoding filter -->
<filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>com.googlecode.webutilities.filters.CharacterEncodingFilter</filter-class>
    <!-- init params  -->
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>force</param-name>
        <param-value>true</param-value> <!-- true if you wanted to force encoding  -->
    </init-param>
    <init-param>
        <param-name>ignoreURLPattern</param-name>
        <param-value>.*\.(png|gif|jpg|tiff|bmp|mpg|jpeg)</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>*</url-pattern>
</filter-mapping>

<!-- Response cache filter -->
<filter>
    <filter-name>responseCacheFilter</filter-name>
    <filter-class>com.googlecode.webutilities.filters.ResponseCacheFilter</filter-class>
    <init-param>
        <param-name>acceptMIMEPattern</param-name>
        <param-value>text/javascript,application/javascript,text/css</param-value>
    </init-param>
    <init-param>
        <param-name>acceptURLPattern</param-name>
        <param-value>.*\.(js|json|css).*</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>responseCacheFilter</filter-name>
    <url-pattern>*.js</url-pattern>
    <url-pattern>*.json</url-pattern>
    <url-pattern>*.css</url-pattern>
</filter-mapping>

<!-- Compression filter -->
<filter>
    <filter-name>compressionFilter</filter-name>
    <filter-class>com.googlecode.webutilities.filters.CompressionFilter</filter-class>
    <init-param>
        <param-name>compressionThreshold</param-name>
        <param-value>512</param-value> <!--  anything above 512bytes  -->
    </init-param>
    <init-param>
        <param-name>ignoreURLPattern</param-name>
        <param-value>.*\.(png|gif|jpg|tiff|bmp|mpg|jpeg).*</param-value>
    </init-param>
    <init-param>
        <param-name>ignoreMimes</param-name>
        <param-value>images/*,video/*, multipart/x-gzip</param-value> <!-- ignore -->
    </init-param>
    <init-param>
        <param-name>ignoreUserAgentsPattern</param-name>
        <param-value>.*MSIE.*</param-value> <!-- regex -->
    </init-param>
</filter>
<filter-mapping>
    <filter-name>compressionFilter</filter-name>
    <url-pattern>*</url-pattern>
</filter-mapping>

<!-- Minify css, js and json filter -->
<filter>
    <filter-name>yuiMinFilter</filter-name>
    <filter-class>com.googlecode.webutilities.filters.YUIMinFilter</filter-class>
    <init-param>
        <param-name>lineBreak</param-name>
        <param-value>8000</param-value>
    </init-param>
    <init-param>
        <param-name>acceptMIMEPattern</param-name>
        <param-value>text/javascript,application/javascript,text/css</param-value>
    </init-param>
    <init-param>
        <param-name>acceptURLPattern</param-name>
        <param-value>.*\.(js|json|css).*</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>yuiMinFilter</filter-name>
    <url-pattern>*.js</url-pattern>
    <url-pattern>*.json</url-pattern>
    <url-pattern>*.css</url-pattern>
</filter-mapping>

また、次のパラメーターを web.xml に設定しようとしました。

<context-param>
    <param-name>org.primefaces.extensions.DELIVER_UNCOMPRESSED_RESOURCES</param-name>
    <param-value>false</param-value>
</context-param>
<context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Production</param-value>
</context-param>

それでも、 PageSpeed の出力から、ページのパフォーマンスを向上させる次の方法が得られます。

**Enable compression for the following resources to reduce their transfer size by 567.5KiB (75% reduction).**
Compressing http://localhost:8888/.../primefaces.js.xhtml?... could save 213.8KiB (79% reduction).
Compressing http://localhost:8888/.../jquery-plugins.js.xhtml?... could save 156.1KiB (72% reduction).
Compressing http://localhost:8888/.../jsf.js.xhtml?... could save 84.3KiB (78% reduction).
Compressing http://localhost:8888/.../jquery.js.xhtml?... could save 67.1KiB (65% reduction).
Compressing http://localhost:8888/.../primefaces.css.xhtml?... could save 42.3KiB (81% reduction).
Compressing http://localhost:8888/.../watermark.js.xhtml?... could save 3.3KiB (63% reduction).
Compressing http://localhost:8888/.../hotkey.js.xhtml?... could save 660B (45% reduction).

**Minify JavaScript for the following resources to reduce their size by 84.4KiB (20% reduction).**
Minifying http://localhost:8888/.../jsf.js.xhtml?... could save 78.4KiB (72% reduction). See optimized content
Minifying http://localhost:8888/.../jquery-plugins.js.xhtml?... could save 3.6KiB (2% reduction). See optimized content
Minifying http://localhost:8888/.../jquery.js.xhtml?... could save 551B (1% reduction). See optimized content

**Minify CSS for the following resources to reduce their size by 4.1KiB (8% reduction).**
Minifying http://localhost:8888/.../primefaces.css.xhtml?... could save 2.7KiB (6% reduction). See optimized content
Minifying http://localhost:8888/.../theme.css.xhtml?... could save 1.4KiB (24% reduction) after compression. See optimized content

**605.3KiB of JavaScript is parsed during initial page load. Defer parsing JavaScript to reduce blocking of page rendering.**
http://localhost:8888/.../primefaces.js.xhtml?... (219.5KiB)
http://localhost:8888/.../jquery-plugins.js.xhtml?... (191.8KiB)
http://localhost:8888/.../jquery.js.xhtml?... (95.3KiB)
http://localhost:8888/.../tooltip.js.xhtml?... (34.5KiB)
http://localhost:8888/.../jsf.js.xhtml?... (25.4KiB)
http://localhost:8888/.../primefaces-extensions.js.xhtml?... (19.7KiB)
http://localhost:8888/page/my/toolbox/ (13.2KiB of inline JavaScript)
http://localhost:8888/.../watermark.js.xhtml?... (4.7KiB)
http://localhost:8888/.../hotkey.js.xhtml?... (1.2KiB)

私にとっては、Primefaces + Primefaces 拡張リソースのオーバーヘッドが大きいように思えます。これらのリソースを WebUtilities フィルターに通すか、少なくともこれらのファイルの圧縮を有効にする方法はありますか? 手伝ってくれてありがとう！

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