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Authorization using spring security

 
Greenhorn
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I am new to spring security.

after reading I understood that spring has many providers to do the authentication. but in my case following is the scenario.

for authentication I have to use LDAP. I am ok with it and understood how to do it in spring.

but for authorization the data is stored in database. I mean to say that all the roles and access information is stored in database. what approach should I take for this thing to implement in spring. please give me some inputs.
 
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This is the common scenario, for most of the cases, i.e. Authentication is from LDAP and authorization from Database. Here, LdapAuthenticationProvider is the Authentication Provider, it takes two classes as constructor arguments, one is the Authenticator class, this can be BindAuthenticator or any other which authenticates from LDAP. The other is the Authorities Populator class, here you can implement the LdapAuthoritiesPopulator interface and return your roles (from database).
 
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