java 代码：

package net.sf.ehcache.constructs.web.filter;

import java.util.Enumeration;import javax.servlet.FilterChain;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.lang.StringUtils;import net.sf.ehcache.CacheException;import net.sf.ehcache.constructs.blocking.LockTimeoutException;import net.sf.ehcache.constructs.web.AlreadyCommittedException;import net.sf.ehcache.constructs.web.AlreadyGzippedException;public class PageEhCacheFilter extends SimplePageCachingFilter{   private final static Logger log = Logger.getLogger(PageEhCacheFilter.class);        private final static String FILTER_URL_PATTERNS = "patterns";    private static String[] cacheURLs;        private void init() throws CacheException {         String patterns = filterConfig.getInitParameter(FILTER_URL_PATTERNS);        cacheURLs = StringUtils.split(patterns, ",");    }        protected void doFilter(final HttpServletRequest request,final HttpServletResponse response,            final FilterChain chain)            throws AlreadyGzippedException,AlreadyCommittedException,            FilterNonReentrantException, LockTimeoutException, Exception {         if (cacheURLs == null) {             init();        }               String url = request.getRequestURI();        boolean flag = false;        if (cacheURLs != null && cacheURLs.length > 0) {             for(String cacheURL : cacheURLs) {                 if (url.contains(cacheURL.trim())) {                     flag = true;                    break;                }            }        }        if(!flag)        {             //压缩所有ｊｓ与ｃｓｓ文件及所有静态页            if(url != null && (url.endsWith(".js") || url.endsWith(".css") || url.endsWith(".html") || url.endsWith(".htm")))            {                 flag = true;            }        }        // 若是包含我们要缓存的url 就缓存该页面，不然履行正常的页面转向        if (flag) {             String query = request.getQueryString();//初始化要缓存的            if (query != null){                 query = "?" + query;                log.info("请求被存放缓存：" + url + query);            }else{                 log.info("请求被存放缓存：" + url);            }            super.doFilter(request,response, chain);        } else {             chain.doFilter(request, response);        }    }        private boolean headerContains(final HttpServletRequest request, final String header, final String value) {         logRequestHeaders(request);        final Enumeration accepted = request.getHeaders(header);        while (accepted.hasMoreElements()) {             final String headerValue = (String) accepted.nextElement();            if (headerValue.indexOf(value) != -1) {                 return true;            }        }        return false;    }        /**     * see net.sf.ehcache.constructs.web.filter.Filter＃acceptsGzipEncoding（javax.servlet.http.HttpServletRequest）     * <b>function:</b> 兼容ie6/7 gzip紧缩     */    protected boolean acceptsGzipEncoding(HttpServletRequest request) {         boolean ie6 = headerContains(request, "User-Agent", "MSIE 6.0");        boolean ie7 = headerContains(request, "User-Agent", "MSIE 7.0");        return acceptsEncoding(request, "gzip") || ie6 || ie7;    }}

web.xml配置：

<filter>

    <filter-name>PageEhCacheFilter</filter-name>    <filter-class>net.sf.ehcache.constructs.web.filter.PageEhCacheFilter</filter-class>    <init-param>        <param-name>patterns</param-name>        <!-- 设置要缓存的url -->        <param-value>/index.jsp,/index_top.jsp,/index_foot.jsp</param-value>    </init-param></filter><filter-mapping>    <filter-name>PageEhCacheFilter</filter-name>    <url-pattern>/*</url-pattern></filter-mapping>

ehcache.xml 配置：

<cache name="SimplePageCachingFilter"

           maxElementsInMemory="100"           maxElementsOnDisk="10000"           eternal="false"           overflowToDisk="false"           diskSpoolBufferSizeMB="20"            timeToIdleSeconds="10"           timeToLiveSeconds="10"           memoryStoreEvictionPolicy="LFU"            />