com.eaio.servlet

Class RedirFilter

java.lang.Object

com.eaio.servlet.RedirFilter

All Implemented Interfaces:

javax.servlet.Filter

public class RedirFilter
extends Object
implements javax.servlet.Filter

Redirects all requests with a host header containing a port number except certain requests to a URL without a port but the same host and path.

Prevents search engines indexing sites at ports other than 80.

Needs an allowedURIs (note case) init parameter which is a regular expression pattern of allowed paths.

Version:

$Id: RedirFilter.java 5084 2012-08-09 19:11:04Z johann $

Author:

Johann Burkard

See Also:

Pattern.compile(String), FilterConfig.getInitParameter(String), init(String, String)

Constructor Summary

Constructors

Constructor and Description
RedirFilter()

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse res, javax.servlet.FilterChain chain)
void	init(javax.servlet.FilterConfig config)
void	init(String uriPattern, String hostname) For testing purposes.

Methods inherited from class java.lang.Object

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

Constructor Detail

RedirFilter

public RedirFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig config)

Specified by:

init in interface javax.servlet.Filter

See Also:

Filter.init(javax.servlet.FilterConfig)

init

public void init(String uriPattern,
        String hostname)

For testing purposes.

Parameters:

uriPattern - the exclusion pattern.

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter

See Also:

Filter.destroy()

doFilter

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

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

See Also:

Filter.doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)