org.gwtwidgets.server.filters
Class ResponseHeaderFilter

java.lang.Object
  org.gwtwidgets.server.filters.ResponseHeaderFilter

All Implemented Interfaces:

javax.servlet.Filter

public class ResponseHeaderFilter
extends java.lang.Object
implements javax.servlet.Filter

Servlet Filter that applies any HTTP header to a matched URL. Init parameters are HTTP header-value pairs. Will silently fail when the ServletResponse does not cast to a HttpServletResponse. A special init-parameter is 'ResponseHeaderFilter.UrlPattern': it is not set as an HTTP header but is rather a regular expression which can be used to further refine URLs on which the filter should match. Headers containing an empty value are removed from the response, even if they already exist there. Inspired by a very worthreading article from Jayson Falkner.

Author:

George Georgovassilis, g.georgovassilis[at]gmail.com

Field Summary

static java.lang.String

URL_PATTERN

Constructor Summary

ResponseHeaderFilter()

Method Summary

void	destroy()
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)
void	init(javax.servlet.FilterConfig conf)

Methods inherited from class java.lang.Object

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

Field Detail

URL_PATTERN

public static final java.lang.String URL_PATTERN

See Also:

Constant Field Values

Constructor Detail

ResponseHeaderFilter

public ResponseHeaderFilter()

Method Detail

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter

doFilter

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

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

java.io.IOException

javax.servlet.ServletException

init

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

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException