WebSecurityConfigurerAdapter 없이 설정 방법

- WebSecurityConfigurerAdapter deprecated
https://spring.io/blog/2022/02/21/spring-security-without-the-websecurityconfigureradapter

https://www.appsdeveloperblog.com/migrating-from-deprecated-websecurityconfigureradapter/

https://stackoverflow.com/questions/71281032/spring-security-exposing-authenticationmanager-without-websecurityconfigureradap

@Bean(BeanIds.AUTHENTICATION_MANAGER)
public AuthenticationManager authenticationManager(AuthenticationConfiguration authenticationConfiguration) throws Exception {
    return authenticationConfiguration.getAuthenticationManager();
}


@Bean
public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
	// AuthenticationProvider
	http.authenticationProvider(authenticationProvider);

    // AuthenticationManager
    AuthenticationManager authManager = authenticationManager(http.getSharedObject(AuthenticationConfiguration.class));

	UsernamePasswordAuthenticationFilter authFilter = new UsernamePasswordAuthenticationFilter(authManager);

	http.addFilterAt(authFilter, UsernamePasswordAuthenticationFilter.class);
}