how @bean and @Autowired actually works?

chandrakant :

My configuration:

   @Autowired
    private PasswordEncoder passwordEncoder;

    @Bean
    public PasswordEncoder passwordEncoderBean() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    // @Autowired
    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth
                .userDetailsService(jwtUserDetailsService)
                .passwordEncoder(passwordEncoder);
    }

this code works fine. But if I remove @Autowired from passwordEncoder, then I must add @Autowired on the configure method. But this rules not apply on authenticationManagerBean() method. Can anyone explain ?

Markovitz :

Look at this URL https://spring.io/guides/topicals/spring-security-architecture/ It seems that you Autowire AuthenticationManagerBuilder auth as a @Bean here.

Configure(AuthenticationManagerBuilder auth) so it will work in this case and passwordEncoder is also Autowired.

how @bean and @Autowired actually works?

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