Authentification manager + database - spring-security

Question

I am trying to set up an authentication system on my spring boot application using spring boot security but I am having trouble getting it to work with my database.
If I try to log in with the credentials of a user created in my InMemoryUserDetailsManager, my AuthenticationManager works completely (it throws an error if the credentials are wrong).
However, if I try with the credentials of a user in my database, it doesn't work because it seems to not be logged in with my AuthenticationManager.
I'm new to spring boot and spring security, sorry if my problem is a bit stupid.
Here is my code that might help you understand my problem:
#Bean
public InMemoryUserDetailsManager inMemoryUserDetailsManager(){
return new InMemoryUserDetailsManager(
User.withUsername("user1").password(passwordEncoder.encode("1234")).authorities("USER").build(),
User.withUsername("user2").password(passwordEncoder.encode("1234")).authorities("USER").build(),
User.withUsername("admin").password(passwordEncoder.encode("1234")).authorities("USER","ADMIN").build()
);
}
#Bean
public AuthenticationManager authenticationManager(UserDetailsService userDetailsService){
DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
authProvider.setPasswordEncoder(passwordEncoder);
authProvider.setUserDetailsService(userDetailsService);
return new ProviderManager(authProvider);
}
#Bean
public SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
return httpSecurity
.csrf(csrf ->csrf.disable())
.authorizeHttpRequests(auth->auth.requestMatchers("/auth/**").permitAll())
.authorizeHttpRequests(auth ->
auth.anyRequest().authenticated()
)
.sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
.oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt)
.httpBasic(Customizer.withDefaults())
.build();
}
#PostMapping("/login")
public Map<String,String> Login(#RequestBody User user){
Authentication authentication = authenticationManager.authenticate(
new UsernamePasswordAuthenticationToken(user.getEmail(), user.getPassword())
);
My database is correctly configured and contains a user

Answer 1

For someone that could be in the same situation as me, u must add this in your code :
#Bean
public UserDetailsService userDetailsService(){
return email->userRepository.findByEmail(email).orElseThrow(()->new UsernameNotFoundException("User not found"));
}
Moreover, u must change your authenticationManager like this :
#Bean
public AuthenticationManager authenticationManager(){
DaoAuthenticationProvider authProvider = new DaoAuthenticationProvider();
authProvider.setPasswordEncoder(passwordEncoder);
authProvider.setUserDetailsService(userDetailsService());
return new ProviderManager(authProvider);
}