测试gzip性能

<%@ page import="java.util.*, java.net.*, java.io.*" %>
<%
  String url = request.getParameter("url");
    long s,e;
  if (url != null) {
    URL noCompress = new URL(url);
    HttpURLConnection huc =
      (HttpURLConnection)noCompress.openConnection();
    huc.setRequestProperty("user-agent","Mozilla(MSIE)");
    s=Calendar.getInstance().getTimeInMillis();
    huc.connect();
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    InputStream is = huc.getInputStream();
    while(is.read() != -1) {
      baos.write((byte)is.read());
    }
    byte[] b1 = baos.toByteArray();
    e=Calendar.getInstance().getTimeInMillis();
    out.println(b1.length+"  time="+(e-s));

    URL compress = new URL(url);
    HttpURLConnection hucCompress =
      (HttpURLConnection)noCompress.openConnection();
    hucCompress.setRequestProperty("accept-encoding","gzip");
    hucCompress.setRequestProperty("user-agent","Mozilla(MSIE)");
    s=Calendar.getInstance().getTimeInMillis();
    hucCompress.connect();
    ByteArrayOutputStream baosCompress =
      new ByteArrayOutputStream();
    InputStream isCompress = hucCompress.getInputStream();
    while(isCompress.read() != -1) {
      baosCompress.write((byte)isCompress.read());
    }
    byte[] b2 = baosCompress.toByteArray();
    //request.setAttribute("t1", new Integer(b1.length));
    //request.setAttribute("t2", new Integer(b2.length));    
    out.println("<br>");
    e=Calendar.getInstance().getTimeInMillis();
    out.println(b2.length+" time="+(e-s));
  }
%>