org.alltimeflashdreamer.filelister
Class FileListerDownloadServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.alltimeflashdreamer.filelister.AbstractFileListerServlet
              org.alltimeflashdreamer.filelister.FileListerDownloadServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class FileListerDownloadServlet

extends AbstractFileListerServlet

Title: FileListerDownloadServlet

Description: This servlet controls the download-zip-file process, including the generation and the streaming of the zip file and the producing of text output for the client while waiting until the file is created.

Organization: All Time Flash Dreamer

Version:

0.5.1

Author:

Copyright (c) 2002-2004 by Florian Steinsiepe

See Also:

Serialized Form

Field Summary

Fields inherited from class org.alltimeflashdreamer.filelister.AbstractFileListerServlet

CONFIGCLASSNAME

Constructor Summary

FileListerDownloadServlet()

Method Summary

void	doPost(HttpServletRequest request, HttpServletResponse response) Reads the download parameter values from the URL (which are just indexes within the FileLister list) and packs the wished/clicked files into a zip which is then sent to the client, together with the right MIME encoding.

Methods inherited from class org.alltimeflashdreamer.filelister.AbstractFileListerServlet

doGet, showErrorSite

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FileListerDownloadServlet

public FileListerDownloadServlet()

Method Detail

doPost

public void doPost(HttpServletRequest request,
                   HttpServletResponse response)
            throws IOException

Reads the download parameter values from the URL (which are just indexes within the FileLister list) and packs the wished/clicked files into a zip which is then sent to the client, together with the right MIME encoding. Because the generation of such a zip fail may take quite a while, it's done by the ZipBuilderThread class which is required on a periodic base (the intermediarily shown download site has a meta-refresh tag which always recalls this servlet). As long as the thread hasn't finished, the download site is shown again, and in the end, the zip file is streamed to the client.

Specified by:

doPost in class AbstractFileListerServlet

Parameters:

request - the request object to read URL stuff from

response - the response object to send stuff to

Throws:

IOException - as defined in the superclass