Custom authentication in Spring

Question

I have a question. In Struts, I have an Action that deals with user authentication, i.e., I took the user\'s credentials and used a DAO to validate user credentials. I want to m

Answer 1

You can write you own validation mechanism for Spring Security. It have to consists of following parts:

• Auth Filter - reads data from request, then call Auth Provider with credentials token (instance of class Authentication)
• Auth Provider - accepts this auth token (filter can create different tokents, and there can be different auth providers, for each token type), and try to authenticate (calling your service, at your case). After auth you may (or may not) call User Details Service or fill all user data right there
• User Details Service - load signed in user details from somewhere (from jdbc, other service, etc)