org.blojsom.filter
Class CompressionFilter

java.lang.Object
  org.blojsom.filter.CompressionFilter

All Implemented Interfaces:

BlojsomConstants, javax.servlet.Filter

public class CompressionFilter

extends java.lang.Object

implements javax.servlet.Filter, BlojsomConstants

CompressionFilter

Copyright 2003 Jayson Falkner (jayson@jspinsider.com) This code is from "Servlets and JavaServer pages; the J2EE Web Tier", http://www.jspbook.com. You may freely use the code both commercially and non-commercially. If you like the code, please pick up a copy of the book and help support the authors, development of more free code, and the JSP/Servlet/J2EE community.

Since:

blojsom 2.10

Version:

$Id: CompressionFilter.java,v 1.13 2006/01/04 16:59:54 czarneckid Exp $

Field Summary

Fields inherited from interface org.blojsom.util.BlojsomConstants

ADMINISTRATORS_IP, BLOG_ADMIN_URL_IP, BLOG_ADMINISTRATION_LOCALE_IP, BLOG_AUTHORIZATION_IP, BLOG_BASE_URL_IP, BLOG_BLACKLIST_FILE_IP, BLOG_COMMENTS_DIRECTORY_IP, BLOG_COMMENTS_ENABLED_IP, BLOG_COUNTRY_DEFAULT, BLOG_COUNTRY_IP, BLOG_DEFAULT_CATEGORY_EXCLUSION_MAPPING_IP, BLOG_DEFAULT_CATEGORY_MAPPING_IP, BLOG_DEFAULT_FETCHER, BLOG_DEFAULT_FILE_EXTENSION_IP, BLOG_DEFAULT_FLAVOR_IP, BLOG_DEFAULT_PROPERTIES, BLOG_DEPTH_IP, BLOG_DESCRIPTION_IP, BLOG_DIRECTORY_FILTER_IP, BLOG_EMAIL_ENABLED_IP, BLOG_ENTRIES_DISPLAY_DEFAULT, BLOG_ENTRIES_DISPLAY_IP, BLOG_ENTRY_META_DATA_EXTENSION_IP, BLOG_FILE_ENCODING_IP, BLOG_FILE_EXTENSIONS_IP, BLOG_HOME_IP, BLOG_LANGUAGE_DEFAULT, BLOG_LANGUAGE_IP, BLOG_NAME_IP, BLOG_OWNER, BLOG_OWNER_EMAIL, BLOG_PERMISSIONS_IP, BLOG_PINGBACKS_DIRECTORY_IP, BLOG_PINGBACKS_ENABLED_IP, BLOG_PROPERTIES_EXTENSIONS_IP, BLOG_TRACKBACK_DIRECTORY_IP, BLOG_TRACKBACKS_ENABLED_IP, BLOG_URL_IP, BLOJSOM_ALL_CATEGORIES, BLOJSOM_AUTHORIZATION_PROVIDER_IP, BLOJSOM_BLOG, BLOJSOM_BLOG_HOME_IP, BLOJSOM_BROADCASTER_IP, BLOJSOM_CATEGORIES, BLOJSOM_COMMENTS_ENABLED, BLOJSOM_CONFIGURATION_BASE_DIRECTORY_IP, BLOJSOM_CONFIGURATION_IP, BLOJSOM_DATE, BLOJSOM_DATE_ISO8601, BLOJSOM_DATE_OBJECT, BLOJSOM_DATE_UTC, BLOJSOM_DEFAULT_BROADCASTER, BLOJSOM_DEFAULT_CONFIGURATION_BASE_DIRECTORY, BLOJSOM_DEFAULT_RESOURCE_DIRECTORY, BLOJSOM_DEFAULT_RESOURCE_MANAGER, BLOJSOM_DEFAULT_TEMPLATES_DIRECTORY, BLOJSOM_DEFAULT_USER_IP, BLOJSOM_EMAIL_ENABLED, BLOJSOM_ENTRIES, BLOJSOM_FETCHER_IP, BLOJSOM_FLAVOR_CONFIGURATION_IP, BLOJSOM_INSTALLATION_DIRECTORY_IP, BLOJSOM_INSTALLED_LOCALES_IP, BLOJSOM_LAST_MODIFIED, BLOJSOM_LISTENER_CONFIGURATION_IP, BLOJSOM_PERMALINK, BLOJSOM_PERMALINK_NEXT_ENTRY, BLOJSOM_PERMALINK_PREVIOUS_ENTRY, BLOJSOM_PLUGIN_CHAIN, BLOJSOM_PLUGIN_CONFIGURATION_IP, BLOJSOM_PLUGINS, BLOJSOM_REQUESTED_CATEGORY, BLOJSOM_REQUESTED_FLAVOR, BLOJSOM_RESOURCE_DIRECTORY_IP, BLOJSOM_RESOURCE_MANAGER_BUNDLES_IP, BLOJSOM_RESOURCE_MANAGER_CONTEXT_KEY, BLOJSOM_RESOURCE_MANAGER_IP, BLOJSOM_SITE_URL, BLOJSOM_TEMPLATES_DIRECTORY_IP, BLOJSOM_USER, BLOJSOM_USERS_IP, BLOJSOM_VERSION, BLOJSOM_VERSION_NUMBER, CACHE_CONTROL_HTTP_HEADER, CATEGORY_PARAM, COMMENT_EXTENSION, DEFAULT_AUTHORIZATION_PROVIDER, DEFAULT_COMMENTS_DIRECTORY, DEFAULT_DIGEST_ALGORITHM, DEFAULT_DISPATCHER_CONFIGURATION_FILE, DEFAULT_ENTRY_EXTENSION, DEFAULT_FLAVOR_CONFIGURATION_FILE, DEFAULT_FLAVOR_HTML, DEFAULT_METADATA_EXTENSION, DEFAULT_PERMISSIONS_CONFIGURATION_FILE, DEFAULT_PINGBACKS_DIRECTORY, DEFAULT_PLUGIN_CONFIGURATION_FILE, DEFAULT_PROPERTIES_EXTENSIONS, DEFAULT_TRACKBACK_DIRECTORY, DESCRIPTION_KEY, DIGEST_ALGORITHM, FLAVOR_PARAM, HTTP_ETAG, HTTP_LASTMODIFIED, INFINITE_BLOG_DEPTH, ISO_8601_DATE_FORMAT, LINE_SEPARATOR, LINEAR_NAVIGATION_ENABLED_IP, MAX_HASHABLE_LENGTH, NAME_KEY, NO_CACHE_HTTP_HEADER_VALUE, OVERRIDE_LASTMODIFIED_PARAM, PAGE_PARAM, PAGE_PARAM_ARCHIVE, PERMALINK_PARAM, PINGBACK_EXTENSION, PLUGINS_PARAM, PRAGMA_HTTP_HEADER, PREFERRED_SYNDICATION_FLAVOR, RECURSIVE_CATEGORIES, REDIRECT_TO_PARAM, RFC_822_DATE_FORMAT, SHORT_ISO_8601_DATE_FORMAT, TRACKBACK_EXTENSION, USE_ENCRYPTED_PASSWORDS, UTC_DATE_FORMAT, UTF8, WHITESPACE, XMLRPC_ENABLED_IP

Constructor Summary

CompressionFilter()

Method Summary

void	destroy() Called when the filter is taken out of service
void	doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse res, javax.servlet.FilterChain chain) Filter a request looking for the "accept-encoding" HTTP header and if available, send compressed content.
void	init(javax.servlet.FilterConfig filterConfig) Initialize the CompressionFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

CompressionFilter

public CompressionFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig filterConfig)
          throws javax.servlet.ServletException

Initialize the CompressionFilter

Specified by:

init in interface javax.servlet.Filter

Parameters:

filterConfig - FilterConfig object

Throws:

javax.servlet.ServletException - If there is an error initializing the filter

doFilter

public void doFilter(javax.servlet.ServletRequest req,
                     javax.servlet.ServletResponse res,
                     javax.servlet.FilterChain chain)
              throws java.io.IOException,
                     javax.servlet.ServletException

Filter a request looking for the "accept-encoding" HTTP header and if available, send compressed content.

Specified by:

doFilter in interface javax.servlet.Filter

Parameters:

req - Request

res - Response

chain - Filter chain

Throws:

java.io.IOException - If there is an error writing the response

javax.servlet.ServletException - If there is an error processing the request

destroy

public void destroy()

Called when the filter is taken out of service

Specified by:

destroy in interface javax.servlet.Filter