如何在spring security中为来自两个不同表的不同用户配置身份验证？

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService1;

    @Autowired
    private UserDetailsService userDetailsService2;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService1).passwordEncoder(passwordEncoder());
        auth.userDetailsService(userDetailsService2).passwordEncoder(passwordEncoder());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/admin/**").hasRole("ADMIN")
            .antMatchers("/user/**").hasRole("USER")
            .anyRequest().authenticated()
            .and()
            .formLogin()
            .and()
            .logout()
            .and()
            .csrf().disable();
    }

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