For the latest stable version, please use Spring Security 6.5.3!spring-doc.cn

UserDetailsService

UserDetailsService is used by DaoAuthenticationProvider for retrieving a username, a password, and other attributes for authenticating with a username and password. Spring Security provides in-memory and JDBC implementations of UserDetailsService.spring-doc.cn

You can define custom authentication by exposing a custom UserDetailsService as a bean. For example, the following listing customizes authentication, assuming that CustomUserDetailsService implements UserDetailsService:spring-doc.cn

This is only used if the AuthenticationManagerBuilder has not been populated and no AuthenticationProviderBean is defined.spring-doc.cn

Custom UserDetailsService Bean

@Bean
CustomUserDetailsService customUserDetailsService() {
	return new CustomUserDetailsService();
}

<b:bean class="example.CustomUserDetailsService"/>

@Bean
fun customUserDetailsService() = CustomUserDetailsService()