Authentication in Spring Web Security issue - spring

Question

I am going to set up background Spring Authentication by a custom class that implemented UserDetailsService. As said in the documentation method loadUserByUsername calls each time when user try to login, but it don't in the case below.
#Component
public class AuthenticationUserDetailsService implements UserDetailsService {
#Autowired
private PersonRepository personRepository;
#Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
Optional<Person> personByUserName = personRepository.findPersonByUserName(username);
Person person = personByUserName.
orElseThrow(() -> new UsernameNotFoundException("User with username has not found"));
return new User(username, person.getPassword(), Collections.emptyList());
}
}
I try to use several alternatives to set up configure(HttpSecurity http) method in WebSecurityConfig class.
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable();
http
.authorizeRequests()
.anyRequest().authenticated()
.and()
.formLogin()
.loginProcessingUrl("api/person/login")
.usernameParameter("username")
.passwordParameter("password");
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable();
http
.httpBasic()
.and()
.authorizeRequests()
.antMatchers("/index.html", "/", "/home", "/api/person/login").permitAll()
.anyRequest().authenticated();
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable();
http.
authorizeRequests().
anyRequest().authenticated()
.and().
formLogin().
loginProcessingUrl("/login").
usernameParameter("username").
passwordParameter("password");
}
Registration DaoAuthenticationProvider:
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(getAuthenticationProvider());
}
#Bean
public DaoAuthenticationProvider getAuthenticationProvider() {
DaoAuthenticationProvider daoAuthenticationProvider = new DaoAuthenticationProvider();
daoAuthenticationProvider.setUserDetailsService(authenticationUserDetailsService);
daoAuthenticationProvider.setPasswordEncoder(passwordEncoder);
return daoAuthenticationProvider;
}
Could anyone explain, where is error, and why loadUserByUsername method doesn't call at all?
The Angular 8 UI part uses to login.
public loginPerson(person: Person): Observable<Person> {
let url = "http://localhost:8080/login";
return this.httpClient.post<Person>(url, {userName: person.username, password: person.password});
}