Securing Spring Cloud Gateway with Spring Security - spring-boot

Question

I am struggling with configuring security for my Spring Cloud Gateway service.
For now i have configured in my api-gateway just one route to user service /api/v1/users. Requests are correctly routed to user service untill I add Spring Security to the dependescies.
Even with that simple config, that should allow all traffic, I am still getting 401 Unathorized response:
#Configuration
#EnableWebFluxSecurity
class SecurityConfiguration {
#Bean
public SecurityWebFilterChain springSecurityFilterChain(ServerHttpSecurity serverHttpSecurity) {
return serverHttpSecurity
.authorizeExchange()
.anyExchange().permitAll().and()
.csrf().disable()
.build();
}
}
What am I doing wrong?

Answer 1

You need to create user to do that. See the sample attached in below. I am using in-memory user to authenticate. Note in-memory user is just for testing purpose only.
#Configuration
public class InMemoryUserSecurityAdapter {
#Bean
public SecurityWebFilterChain filterChain(ServerHttpSecurity http) {
return http
.authorizeExchange()
.pathMatchers("/school-library-service/**").authenticated()
.and().authenticationManager(reactiveAuthenticationManager())
.authorizeExchange().anyExchange().permitAll().and()
.httpBasic().and()
.build();
}
#Bean
ReactiveAuthenticationManager reactiveAuthenticationManager(){
return new UserDetailsRepositoryReactiveAuthenticationManager(getInMemoryUserDetails());
}
#Bean
public MapReactiveUserDetailsService getInMemoryUserDetails() {
UserDetails admin = User.withDefaultPasswordEncoder().username("admin1").password("password")
.roles("ADMIN")
.build();
return new MapReactiveUserDetailsService(admin);
}
}
https://github.com/DeepuGeorgeJacob/school-management/blob/main/security/in-memory-user-security/src/main/java/com/school/management/config/InMemoryUserSecurityAdapter.java
Happy coding :)