Após mudar o codigo para essa versao do spring 3.1, quando tento logar no insomnia devolve esta exception apenas com o codigo novo.

Tarde! Estava com o mesmo problema. Resolvi adicionando uma anotação e instanciando o securityFilter:

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.http.HttpMethod; import org.springframework.security.authentication.AuthenticationManager; import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; import org.springframework.security.config.http.SessionCreationPolicy; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.security.crypto.password.PasswordEncoder; import org.springframework.security.web.SecurityFilterChain; import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration @EnableWebSecurity public class SecurityConfigurations {

@Autowired
private SecurityFilter securityFilter;

@Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
    return http.csrf(csrf -> csrf.disable())
            .sessionManagement(sm -> sm.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
            .authorizeHttpRequests(req -> {
                req.requestMatchers(HttpMethod.POST, "/login").permitAll();
                req.anyRequest().authenticated();
            })
            .addFilterBefore(securityFilter, UsernamePasswordAuthenticationFilter.class)
            .build();
}

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

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

}

Obrigado, Andresa.

Aqui só funcionou dps de instanciar e anotar como vc mostrou.