GzipFilter 项目中介绍

gzipFilter 其实就位于 eHcache 里面，他是将response中的东东都压缩一下，这个可大大减少了传输时间。 

Java代码

<filter>
        <filter-name>gzipFilter</filter-name>
        <filter-class>
            net.sf.ehcache.constructs.web.filter.GzipFilter
        </filter-class>
    </filter>
<filter-mapping>
        <filter-name>gzipFilter</filter-name>
        <url-pattern>*.css</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>gzipFilter</filter-name>
        <url-pattern>*.png</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>gzipFilter</filter-name>
        <url-pattern>*.gif</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>gzipFilter</filter-name>
        <url-pattern>*.html</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>gzipFilter</filter-name>
        <url-pattern>*.jsp</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>gzipFilter</filter-name>
        <url-pattern>*.js</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>gzipFilter</filter-name>
        <url-pattern>*.json</url-pattern>
    </filter-mapping>