Multi-Authentication Spring Application

I'm in need of a Spring application that offers a multi-authentication system to allow users to log in using Oauth2, DB username/password, and LDAP, all integrated into a single application.

Ideal Skills:
- Proficiency in Java and Spring Framework
- Experience with Oauth2, LDAP, and database management
- Strong understanding of security practices and multi-authentication configurations

I would require the following features:
- Seamless integration of Oauth2, DB username/password, and LDAP for user authentication