[java] Spring Security with roles and permissions

To implement that, it seems that you have to:

  1. Create your model (user, role, permissions) and a way to retrieve permissions for a given user;
  2. Define your own org.springframework.security.authentication.ProviderManager and configure it (set its providers) to a custom org.springframework.security.authentication.AuthenticationProvider. This last one should return on its authenticate method a Authentication, which should be setted with the org.springframework.security.core.GrantedAuthority, in your case, all the permissions for the given user.

The trick in that article is to have roles assigned to users, but, to set the permissions for those roles in the Authentication.authorities object.

For that I advise you to read the API, and see if you can extend some basic ProviderManager and AuthenticationProvider instead of implementing everything. I've done that with org.springframework.security.ldap.authentication.LdapAuthenticationProvider setting a custom LdapAuthoritiesPopulator, that would retrieve the correct roles for the user.

Hope this time I got what you are looking for. Good luck.