Java web 使用页面压缩

借助类，相关依赖：

<!-- https://mvnrepository.com/artifact/net.sourceforge.pjl-comp-filter/pjl-comp-filter -->
<dependency>
    <groupId>net.sourceforge.pjl-comp-filter</groupId>
    <artifactId>pjl-comp-filter</artifactId>
    <version>1.7</version>
</dependency>

在web.xml添加filter：

<filter>
  <filter-name>CompressingFilter</filter-name>
  <filter-class>com.planetj.servlet.filter.compression.CompressingFilter</filter-class>
</filter>
<filter-mapping>
  <filter-name>CompressingFilter</filter-name>
  <url-pattern>/*</url-pattern><!--对所有页面压缩-->
</filter-mapping>

更详细的例子：

<filter>
        <filter-name>CompressingFilter</filter-name>
        <filter-class>com.planetj.servlet.filter.compression.CompressingFilter</filter-class>
        <init-param>
            <param-name>compressionThreshold</param-name><!-- 资源大小超过100byte的就被压缩 -->
            <param-value>100</param-value>
        </init-param>
        <init-param>
            <param-name>includeContentTypes</param-name><!-- 启动GZIP压缩的MIME类型 -->
            <param-value>text/html,text/xml,text/javascript,text/css,text/plain</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>CompressingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>