<Connector port="80" protocol="HTTP/1.1"  
      connectionTimeout="20000"  
      redirectPort="8443" executor="tomcatThreadPool" URIEncoding="utf-8"  
            compression="on"  
            compressionMinSize="50" noCompressionUserAgents="gozilla, traviata"  
            compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain" /> 

compression="on" 打開壓縮功能 
compressionMinSize="50" 啟用壓縮的輸出內(nèi)容大小，默認(rèn)為2KB 
noCompressionUserAgents="gozilla, traviata" 對(duì)于以下的瀏覽器，不啟用壓縮 
compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain"　哪些資源類型需要壓縮

@Test 
public void testGzip() { 
    HttpClient httpClient = new HttpClient(); 
    GetMethod getMethod = new GetMethod("http://localhost/admin.jsp"); 
    try { 
        getMethod.addRequestHeader("accept-encoding", "gzip,deflate"); 
        getMethod.addRequestHeader("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Alexa Toolbar; Maxthon 2.0)"); 
        int result = httpClient.executeMethod(getMethod); 
        if (result == 200) { 
            System.out.println(getMethod.getResponseContentLength()); 
            String html = getMethod.getResponseBodyAsString(); 
            System.out.println(html); 
            System.out.println(html.getBytes().length); 
        } 
    } catch (HttpException e) { 
        e.printStackTrace(); 
    } catch (IOException e) { 
        e.printStackTrace(); 
    } finally { 
        getMethod.releaseConnection(); 
    } 
}