Get instance of AuthenticationManager Manually

Question

I\'m trying to implement the below, but my authenticationManager instance throws the below exception and is not autowired. How do I get an instance of it from Spring manual

Answer 1

First, provide an explicit bean name for your AuthenticationManager

<authentication-manager alias="authenticationManager">
   ...
</authentication-manager>

Second, use qualifier when auto-wiring:

@Autowired
@Qualifier("authenticationManager")
protected AuthenticationManager authenticationManager;