Apr 27

EncodedPage.java Servlet that shows the bandwidth benefits of gzipping pages to browsers that can handle gzip. Uses the ServletUtilities class to simplify the DOCTYPE and HEAD output. #Programming Code Examples #Java/J2EE/J2ME #Servlet 

EncodedPage.java  Servlet that shows the bandwidth benefits of gzipping pages to browsers that can handle gzip. Uses the ServletUtilities  class to simplify the DOCTYPE and HEAD output. 

package cwp;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.zip.*;

/** Example showing benefits of gzipping pages to browsers
 *  that can handle gzip.
 *  

 *  Taken from Core Web Programming Java 2 Edition
 *  from Prentice Hall and Sun Microsystems Press,
 *  .
 *  May be freely used or adapted.
 */

public class EncodedPage extends HttpServlet {
  public void doGet(HttpServletRequest request,
                    HttpServletResponse response)
      throws ServletException, IOException {
    response.setContentType("text/html");
    String encodings = request.getHeader("Accept-Encoding");
    String encodeFlag = request.getParameter("encoding");
    PrintWriter out;
    String title;
    if ((encodings != null) &&
        (encodings.indexOf("gzip") != -1) &&
        !"none".equals(encodeFlag)) {
      title = "Page Encoded with GZip";
      OutputStream out1 = response.getOutputStream();
      out = new PrintWriter(new GZIPOutputStream(out1), false);
      response.setHeader("Content-Encoding", "gzip");
    } else {
      title = "Unencoded Page";
      out = response.getWriter();
    }
    out.println(ServletUtilities.headWithTitle(title) +
                "n" +
                "
" + title + "
n");
    String line = "Blah, blah, blah, blah, blah. " +
                  "Yadda, yadda, yadda, yadda.";
    for(int i=0; i<10000; i++) {
      out.println(line);
    }
    out.println("");
    out.close();
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10249
Categories:Programming Code Examples, Java/J2EE/J2ME, Servlet
Tags:Java/J2EE/J2MEServlet
Post Data:2017-01-02 16:04:28

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