我們在使用Tomcat優化配置時，都會開始Tomcat的Gzip壓縮功能，配置如下：

  <Connector port="9080" protocol="HTTP/1.1"         connectionTimeout="20000"         redirectPort="8443" URIEncoding="UTF-8" useBodyEncodingForURI="true"        compression="on"         compressionMinSize="2048"         noCompressionUserAgents="gozilla, traviata"         compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain,image/gif,image/jpg"                 />

即把以下內容加入到 apache-tomcat-6/conf/server.xml 中的connector標簽中

  <!-- Note : To use Gzip compression you could set the following properties :            compression="on"         compressionMinSize="2048"         noCompressionUserAgents="gozilla, traviata"         compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain,image/gif,image/jpg"    --> 

參數說明：

 compression="on" 打開壓縮功能

注意：tomcat7以后，js文件的mimetype類型變為了application/Javascript，具體的tomcat7定義的類型可以在：conf/web.xml文件中找到。

我的Tomcat6所以 還是 text/javascript

Tomcat7 js文件的mimetype類型變為了application/javascript

那么我們如何測試配置的Gzip壓縮功能生效了呢？

import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.methods.GetMethod; /** * @ClassName:     GzipTest.java * @Description:   TODO(用一句話描述該文件做什么)  *  * @author         Administrator * @E-mail         809044093@qq.com  * @version        V1.0   * @Date           2014-3-27 上午09:07:00  */public class GzipTest { /** * @param args */ public static void main(String[] args) throws Exception{   HttpClient http = new HttpClient();   GetMethod get = new GetMethod("http://127.0.0.1:9080/membercms/style/shop/js/base.js");   try{   get.addRequestHeader("accept-encoding", "gzip,deflate");   get.addRequestHeader("user-agent", "Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 5.0; Alexa Toolbar; Maxthon 2.0)");   int er = http.executeMethod(get);   if(er==200){    System.out.println(get.getResponseContentLength());    String html = get.getResponseBodyAsString();    System.out.println(html);    System.out.println(html.getBytes().length);   } }finally{    get.releaseConnection();    } } }