Apache tomcat (8.0.36) gzip不工作，我添加了以下代码

compression="on"
compressableMimeType="text/html,text/xml,text/plain,text/css,text/javascript,application/javascript,application/json"

<filter>
    <filter-name>GzipFilter</filter-name>
    <filter-class>org.apache.catalina.filters.GzipFilter</filter-class>
    <init-param>
        <param-name>compression</param-name>
        <param-value>on</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>GzipFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>