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From Lyallex <lyal...@gmail.com>
Subject This is odd, sometimes my requests 'miss' the Struts2 filter
Date Thu, 10 Jul 2008 10:11:40 GMT
Hello

Tomcat version  5.5.26
Struts2 version 2.0.11.1

I'm trying to understand why, given the following in web.xml requests
sometimes 'miss out' the Struts2 filter

<filter>
  <filter-name>struts2</filter-name>
  <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>

<filter-mapping>
  <filter-name>struts2</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>


It appears to really only be an issue with web.xml declarative security

Reading around the various archives it appears that this is a know issue
when trying to use Struts2 Actions as the target but I'm not trying to do that
I just use a standard jsp.

<odd>

The really odd thing is that the login process works perfectly
sometimes and sometimes it fails with the (apparently well known) message

The Struts dispatcher cannot be found.
This is usually caused by using Struts tags without the associated filter ...

</odd>

Here's the login config

<login-config>
  <auth-method>FORM</auth-method>
  <realm-name>Form based authentication</realm-name>
  <form-login-config>
<form-login-page>/login.jsp</form-login-page>
<form-error-page>/login.jsp</form-error-page>
  </form-login-config>
</login-config>

Someone, somwhere on my journey through the archives suggested this fix.

<filter-mapping>
  <filter-name>struts2</filter-name>
  <url-pattern>/*</url-pattern>
  <dispatcher>REQUEST</dispatcher>
  <dispatcher>FORWARD</dispatcher>
</filter-mapping>

It does appear to solve the problem I was just wondering why ?

Is there a definitive resolution to this problem out there somewhere ?

TIA

lyallex

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