GZipTest

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package com.helloweenvsfei.test;import java.net.URL;import java.net.URLConnection;import java.text.NumberFormat;public class GZipTest {public static void test(String url) throws Exception {/** 支持 GZIP 的连接 */URLConnection connGzip = new URL(url).openConnection();connGzip.setRequestProperty("Accept-Encoding", "gzip");int lengthGzip = connGzip.getContentLength();/** 不支持 GZIP 的连接 */URLConnection connCommon = new URL(url).openConnection();int lengthCommon = connCommon.getContentLength();double rate = new Double(lengthGzip) / lengthCommon;System.out.println("网址: " + url);System.out.println("压缩后: " + lengthGzip + " byte, \t压缩前: "+ lengthCommon + " byte, \t比率: "+ NumberFormat.getPercentInstance().format(rate));System.out.println();}public static void main(String[] args) throws Exception {test("http://localhost:8080/filter/dojo/dojo.js");test("http://localhost:8080/filter/image.jsp");test("http://localhost:8080/filter/winter.jpg");}}

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