JEE-Cache-Filter

在专项优化web性能过程中写的Cache Filter,服务端是Tomcat7。最优缓存策略制定参见我的文章：web性能优化(二) 合理利用浏览器缓存

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####使用参考

• DisableETagFilter
  web.xml filter配置

<filter>
		<filter-name>disableETagFilter</filter-name>
		<filter-class>com.huawei.universe.ckm.web.filter.DisableETagFilter</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>disableETagFilter</filter-name>
		<servlet-name>default</servlet-name>
	</filter-mapping>

• CacheFilter
  web.xml filter配置

<filter-name>cacheFilter</filter-name>
		<filter-class>com.huawei.universe.ckm.web.filter.CacheFilter</filter-class>
		<init-param>
			<param-name>expiration</param-name>
			<param-value>31536000</param-value>
		</init-param>
		<!--<init-param>
			<param-name>vary</param-name>
			<param-value>Accept-Encoding</param-value>
		</init-param>
		<init-param>
			<param-name>private</param-name>
			<param-value>true</param-value>
		</init-param>-->
	</filter>
	<filter-mapping>
		<filter-name>cacheFilter</filter-name>
		<url-pattern>*.jpeg</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>cacheFilter</filter-name>
		<url-pattern>*.png</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>cacheFilter</filter-name>
		<url-pattern>*.css</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>cacheFilter</filter-name>
		<url-pattern>*.js</url-pattern>
	</filter-mapping>