net.sourceforge.log4ajax.web.filter
Class Log4AjaxFilter

java.lang.Object
  |
  +--net.sourceforge.log4ajax.web.filter.Log4AjaxFilter

All Implemented Interfaces:

javax.servlet.Filter

public class Log4AjaxFilter

extends java.lang.Object

implements javax.servlet.Filter

Log messages from client side AJAX applications using the underlying logging mechanism. Simplistic assumptions are made as to the format of the incoming messages and therefore the parsing code is extremly trivial.

Author:

Eric Spiegelberg

See Also:

Log4Ajax

Constructor Summary

Log4AjaxFilter()

Method Summary

void	destroy() Empty implementation.
void	doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse resp, javax.servlet.FilterChain chain) Read the incoming request and log the message at the appropriate level.
void	init(javax.servlet.FilterConfig fc) The usual basic implementation.

Methods inherited from class java.lang.Object

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

Constructor Detail

Log4AjaxFilter

public Log4AjaxFilter()

Method Detail

doFilter

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

Read the incoming request and log the message at the appropriate level. This example shows grabbing the userId from the HttpSession and capturing it in the log. Other application specific information could be captured as well.

Specified by:

doFilter in interface javax.servlet.Filter

java.io.IOException

javax.servlet.ServletException

See Also:

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

init

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

The usual basic implementation.

Specified by:

init in interface javax.servlet.Filter

javax.servlet.ServletException

See Also:

Filter.init(javax.servlet.FilterConfig)

destroy

public void destroy()

Empty implementation.

Specified by:

destroy in interface javax.servlet.Filter

See Also:

Filter.destroy()