extending AuthenticationProcessingFilter

[ssurapan]

In my login page user has to enter 3 fields to login to the app

I am thinking of extending AutheticationProcessingFilter , extend the UserNamePasswordToken which has 3 values and extend Provider Manager to accept the new token

Is it the right way to do it?

If we set auto-config=true and use the below as specified in the docs
<beans:bean id="myFilter" class="com.mycompany.MySpecialAuthenticationFilter ">
<custom-filter position="AUTHENTICATION_PROCESSING_FILTER"/>
</beans:bean>

How do I use the properties that were used by the framework in my filter without configuring?

If I give exactly the above specified in the docs, it is not able to instantiate the bean beacuse it is missing properties like defaultTargetURL

Thanks

[Luke Taylor]

You'll find logging in with extra information in the FAQ:

http://static.springframework.org/sp.../site/faq.html

so this is a valid approach, apart from extending ProviderManager - you would implement a custom authentication provider.

Obviously you have to code a valid filter and if you extend AuthenticationProcessingFilter then you have to set the required properties.