How to support basic authentication and bearer authentication for the REST API project - spring-boot

Question

I am new to Spring Security & still learning it so my question can be naive please bear with it.
I have Sprint Boot Rest API project which exposes certain APIs. I have already implemented the bearer token based authentication for all the APIs.
e.g /user , /resource, /appointment
Now for few apis for a particular controller I would like to have the basic authentication implemented. These Apis will be consumed by another service which is not exposed to public.
In order to have the security for the APIs I would like to have basic authentication in place for these apis.
e.g /internal/api1 , internal/api2 .. and so on
I am not able to distinguished between urls in the ResourceServerConfigurerAdapter & WebSecurityConfigurerAdapter. Also not sure which should be used for adding basicAuth() using the antmatchers

Answer 1

What you want, by reading your problem, is to have two authentication types (token and httpBasic) for two diffetent endpoints. It can be achieved by creating two different WebSecurityConfigurerAdapter beans. Spring Boot enables this and can be done like bellow:
#Order(1) - /resource|user|appointment/** protected by bearer token authentication.
#Order(2) - /internal/** protected by basic auth.
View docs for Spring Boot and sample code here.
#EnableWebSecurity
public class SecurityConfig {
#Configuration
#Order(1)
public class ApiSecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http
.antMatcher("/resource/**")
.antMatcher("/user/**")
.antMatcher("/appointment/**")
.authorizeRequests()
.anyRequest().authenticated()
.and() .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.and().addFilterBefore(jwtTokenFilter(), UsernamePasswordAuthenticationFilter.class);
}
}
#Configuration
#Order(2)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable()
.authorizeRequests()
.antMatchers("/internal/**")
.and()
.httpBasic();
}
}
}