Servlet filter on j_security_check

[Martin Dubuc]

 I am using form based authentication in my  application. I would like to know 
if it is possible to install a  Servlet filter on j_security_check.
  
  I have tried to install one, but it never gets invoked. Here is my filter 
definition in application web.xml:
  
      <filter>
          <filter-name>LoginFilter</filter-name>
          <filter-class>LoginFilter</filter-class>
          <description>Performs pre-login and post-login operation</description>
      </filter>
  
      <filter-mapping>
          <filter-name>LoginFilter</filter-name>
          <url-pattern>/j_security_check</url-pattern>
      </filter-mapping>
  
  I have some logs in the doFilter function. It seems like doFilter never  gets 
called. However, if I set the url-pattern property to /*, doFilter  gets called 
while rendering pages, but doesn't seem to be invoked from  j_security_check.
  
  Comments? Suggestions?
  
  Martin
  

                
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