Retrieve User information in Spring Security

To retrieve user information in Spring Security, you can follow these steps:

1. Define a UserDetailsService interface to load user-specific data.
2. Implement the UserDetailsService interface to provide a custom user details service.
3. Configure the custom user details service in the security configuration class.
4. Use the UserDetails object to access user information in the application.

These steps will allow you to retrieve user information in Spring Security by defining and implementing a custom user details service and configuring it in the security configuration class.