Spring Security role-based authorization issue: 403 Forbidden error

Spring Security is a powerful security framework for protecting applications from malicious attacks. When using Spring Security, role authorization issues may cause 403 Forbidden errors. PHP editor Banana introduces this problem to you in detail and provides a solution to help you successfully solve the problem of role authorization. Whether you are a beginner or an experienced developer, this article will help you deeply understand Spring Security's role authorization mechanism and learn to handle 403 Forbidden errors correctly.

Question content

Question:

I'm trying to create a spring based web server with role based authentication but I keep getting a 403 forbidden error. I have implemented a custom userdetails class and I suspect there may be a problem with my configuration.

Code:

Custom userdetails:

public class customuserdetails implements userdetails {
    private static final long serialversionuid = 1l;
    private final user user;

    public customuserdetails(user user) {
        this.user = user;
    }

    @override
    public collection<? extends grantedauthority> getauthorities() {
        return user.getroles().stream().map(r -> new simplegrantedauthority("role_" + r.getname())).tolist();
    }

    // ... other userdetails methods
}

securityfilterchain Implementation:

@Bean
public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
    return http
        .csrf(csrf -> csrf.disable())
        .sessionManagement(sess -> sess.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
        .authorizeHttpRequests(requests -> requests
            .requestMatchers("/api/**").permitAll()
            .requestMatchers("/secret/**").hasAuthority("USER")
            .anyRequest().authenticated())
        .oauth2ResourceServer(oauth2 -> oauth2.jwt(Customizer.withDefaults()))
        .addFilterBefore(authorizeFilter, UsernamePasswordAuthenticationFilter.class)
        .build();
}

I have implemented a custom userdetails class and configured spring security for role based authentication. However, even though I believe the roles are assigned correctly, I still get a 403 forbidden error. I tried using both hasrole and hasauthority but the problem persists. What's missing in my configuration?

Any insights or suggestions would be greatly appreciated. Thanks!

Workaround

For resource servers with JWT, permissions are set by the authentication converter.

The default authentication converter is JwtAuthenticarionConverter, which delegates permission conversion to a configurable permissions converter (defaults to using the scope entry in the statement added SCOPE_ prefix).

You can provide a JwtAuthenticationConverter configured with another permission converter (one that uses another claim as the permission source), or switch to a completely different Converter<Jwt,? Use <code>http.oauth2ResourceServer to extend AbstractAuthenticationToken>(oauth2-> oauth2.jwt(Jwt -> jwt.jwtAuthenticationConverter(...))

You may also consider this additional launcher I maintain it using a configurable permissions converter application property (unless you provide your own permissions or authentication converter in the conf)

You can try to open spring's TRACE log and find out where the problem occurs. This suggestion may not help you directly, but it does help us find the reason why the API returns 403 when migrating to Springboot3.0

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