TechQA.

Why Spring Authorization Server return "invalid_grant"?

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I am trying to use Spring Authorization Server to protect my APIs in microservices. My APIs are being accessed via API Gateway Server. I have two Resource Server, 1 discovery server & 1 configuration server.

I'm following code from this Spring Documentation

My Application.yml file:

server:
  port: 9000

logging:
  level:
    org.springframework.security: trace

spring:
  security:
    oauth2:
      authorizationserver:
        client:
          oidc-client:
            registration:
              client-id: "oidc-client"
              client-secret: "{noop}secret"
              client-authentication-methods:
                - "client_secret_basic"
              authorization-grant-types:
                - "authorization_code"
                - "refresh_token"
              redirect-uris:
                - "http://127.0.0.1:8222/login/oauth2/code/oidc-client"
              post-logout-redirect-uris:
                - "http://127.0.0.1:8222/"
              scopes:
                - "openid"
                - "profile"
            require-authorization-consent: true

My Application Main File:

package com.ali.authserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class AuthServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(AuthServerApplication.class, args);
    }
}

My Security Configuration file:

package com.ali.authserver.config;

import com.nimbusds.jose.jwk.JWKSet;
import com.nimbusds.jose.jwk.RSAKey;
import com.nimbusds.jose.jwk.source.ImmutableJWKSet;
import com.nimbusds.jose.jwk.source.JWKSource;
import com.nimbusds.jose.proc.SecurityContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.http.MediaType;
import org.springframework.security.config.Customizer;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.oauth2.core.AuthorizationGrantType;
import org.springframework.security.oauth2.core.ClientAuthenticationMethod;
import org.springframework.security.oauth2.core.oidc.OidcScopes;
import org.springframework.security.oauth2.jwt.JwtDecoder;
import org.springframework.security.oauth2.server.authorization.client.InMemoryRegisteredClientRepository;
import org.springframework.security.oauth2.server.authorization.client.RegisteredClient;
import org.springframework.security.oauth2.server.authorization.client.RegisteredClientRepository;
import org.springframework.security.oauth2.server.authorization.config.annotation.web.configuration.OAuth2AuthorizationServerConfiguration;
import org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.OAuth2AuthorizationServerConfigurer;
import org.springframework.security.oauth2.server.authorization.settings.AuthorizationServerSettings;
import org.springframework.security.oauth2.server.authorization.settings.ClientSettings;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;
import org.springframework.security.web.util.matcher.MediaTypeRequestMatcher;

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.util.UUID;

@Configuration
@EnableWebSecurity
public class SecurityConfig {

    @Bean
    @Order(1)
    public SecurityFilterChain authorizationServerSecurityFilterChain(HttpSecurity http)
            throws Exception {
        OAuth2AuthorizationServerConfiguration.applyDefaultSecurity(http);
        http.getConfigurer(OAuth2AuthorizationServerConfigurer.class)
                .oidc(Customizer.withDefaults());   // Enable OpenID Connect 1.0
        http
                // Redirect to the login page when not authenticated from the
                // authorization endpoint
                .exceptionHandling((exceptions) -> exceptions
                        .defaultAuthenticationEntryPointFor(
                                new LoginUrlAuthenticationEntryPoint("/login"),
                                new MediaTypeRequestMatcher(MediaType.TEXT_HTML)
                        )
                )
                // Accept access tokens for User Info and/or Client Registration
                .oauth2ResourceServer((resourceServer) -> resourceServer
                        .jwt(Customizer.withDefaults()));

        return http.build();
    }

    @Bean
    @Order(2)
    public SecurityFilterChain defaultSecurityFilterChain(HttpSecurity http)
            throws Exception {
        http
                .authorizeHttpRequests((authorize) -> authorize
                        .anyRequest().authenticated()
                )
                // Form login handles the redirect to the login page from the
                // authorization server filter chain
                .formLogin(Customizer.withDefaults());

        return http.build();
    }

    @Bean
    public UserDetailsService userDetailsService() {
        UserDetails userDetails = User.withDefaultPasswordEncoder()
                .username("user")
                .password("password")
                .roles("USER")
                .build();

        return new InMemoryUserDetailsManager(userDetails);
    }

    @Bean
    public RegisteredClientRepository registeredClientRepository() {
        RegisteredClient oidcClient = RegisteredClient.withId(UUID.randomUUID().toString())
                .clientId("oidc-client")
                .clientSecret("{noop}secret")
                .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_BASIC)
                .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
                .authorizationGrantType(AuthorizationGrantType.REFRESH_TOKEN)
                .redirectUri("http://127.0.0.1:8222/login/oauth2/code/oidc-client")
                .postLogoutRedirectUri("http://127.0.0.1:8222/")
                .scope(OidcScopes.OPENID)
                .scope(OidcScopes.PROFILE)
                .clientSettings(ClientSettings.builder().requireAuthorizationConsent(true).build())
                .build();

        return new InMemoryRegisteredClientRepository(oidcClient);
    }

    @Bean
    public JWKSource<SecurityContext> jwkSource() {
        KeyPair keyPair = generateRsaKey();
        RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
        RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
        RSAKey rsaKey = new RSAKey.Builder(publicKey)
                .privateKey(privateKey)
                .keyID(UUID.randomUUID().toString())
                .build();
        JWKSet jwkSet = new JWKSet(rsaKey);
        return new ImmutableJWKSet<>(jwkSet);
    }

    private static KeyPair generateRsaKey() {
        KeyPair keyPair;
        try {
            KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
            keyPairGenerator.initialize(2048);
            keyPair = keyPairGenerator.generateKeyPair();
        }
        catch (Exception ex) {
            throw new IllegalStateException(ex);
        }
        return keyPair;
    }

    @Bean
    public JwtDecoder jwtDecoder(JWKSource<SecurityContext> jwkSource) {
        return OAuth2AuthorizationServerConfiguration.jwtDecoder(jwkSource);
    }

    @Bean
    public AuthorizationServerSettings authorizationServerSettings() {
        return AuthorizationServerSettings.builder().build();
    }

}

My Log:

2024-03-12T01:59:07.618+05:00 TRACE 20452 --- [nio-9000-exec-1] o.s.s.w.a.AnonymousAuthenticationFilter  : Set SecurityContextHolder to AnonymousAuthenticationToken [Principal=anonymousUser, Credentials=[PROTECTED], Authenticated=true, Details=WebAuthenticationDetails [RemoteIpAddress=0:0:0:0:0:0:0:1, SessionId=null], Granted Authorities=[ROLE_ANONYMOUS]]
2024-03-12T01:59:07.618+05:00 TRACE 20452 --- [nio-9000-exec-1] o.s.s.w.a.ExceptionTranslationFilter     : Sending AnonymousAuthenticationToken [Principal=anonymousUser, Credentials=[PROTECTED], Authenticated=true, Details=WebAuthenticationDetails [RemoteIpAddress=0:0:0:0:0:0:0:1, SessionId=null], Granted Authorities=[ROLE_ANONYMOUS]] to authentication entry point since access is denied

org.springframework.security.access.AccessDeniedException: Access Denied
    at org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:98) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:179) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.resource.web.authentication.BearerTokenAuthenticationFilter.doFilterInternal(BearerTokenAuthenticationFilter.java:128) ~[spring-security-oauth2-resource-server-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.web.OAuth2ClientAuthenticationFilter.doFilterInternal(OAuth2ClientAuthenticationFilter.java:110) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.web.NimbusJwkSetEndpointFilter.doFilterInternal(NimbusJwkSetEndpointFilter.java:85) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.oidc.web.OidcProviderConfigurationEndpointFilter.doFilterInternal(OidcProviderConfigurationEndpointFilter.java:86) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.web.OAuth2DeviceVerificationEndpointFilter.doFilterInternal(OAuth2DeviceVerificationEndpointFilter.java:139) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.web.OAuth2AuthorizationEndpointFilter.doFilterInternal(OAuth2AuthorizationEndpointFilter.java:173) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.web.OAuth2AuthorizationServerMetadataEndpointFilter.doFilterInternal(OAuth2AuthorizationServerMetadataEndpointFilter.java:84) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:107) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:93) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.oidc.web.OidcLogoutEndpointFilter.doFilterInternal(OidcLogoutEndpointFilter.java:117) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:117) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:91) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.oauth2.server.authorization.config.annotation.web.configurers.AuthorizationServerContextFilter.doFilterInternal(AuthorizationServerContextFilter.java:61) ~[spring-security-oauth2-authorization-server-1.2.1.jar:1.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.context.SecurityContextHolderFilter.doFilter(SecurityContextHolderFilter.java:82) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.context.SecurityContextHolderFilter.doFilter(SecurityContextHolderFilter.java:69) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:62) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.session.DisableEncodeUrlFilter.doFilterInternal(DisableEncodeUrlFilter.java:42) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:233) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:191) ~[spring-security-web-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.web.servlet.handler.HandlerMappingIntrospector.lambda$createCacheFilter$3(HandlerMappingIntrospector.java:195) ~[spring-webmvc-6.1.3.jar:6.1.3]
    at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:113) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:74) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.security.config.annotation.web.configuration.WebMvcSecurityConfiguration$CompositeFilterChainProxy.doFilter(WebMvcSecurityConfiguration.java:225) ~[spring-security-config-6.2.1.jar:6.2.1]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:352) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:268) ~[spring-web-6.1.3.jar:6.1.3]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.1.3.jar:6.1.3]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.1.3.jar:6.1.3]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-10.1.18.jar:10.1.18]
    at java.base/java.lang.Thread.run(Thread.java:1623) ~[na:na]

2024-03-11T12:55:29.218+05:00 DEBUG 10104 --- [nio-9000-exec-1] o.s.s.w.s.HttpSessionRequestCache        : Saved request http://localhost:9000/oauth2/authorize?response_type=code&client_id=oidc-client&redirect_uri=http://127.0.0.1:8222/login/oauth2/code/oidc-client&scope=openid+profile&continue to session
2024-03-11T12:55:29.220+05:00 DEBUG 10104 --- [nio-9000-exec-1] s.w.a.DelegatingAuthenticationEntryPoint : Trying to match using MediaTypeRequestMatcher [contentNegotiationStrategy=org.springframework.web.accept.HeaderContentNegotiationStrategy@79b201d, matchingMediaTypes=[text/html], useEquals=false, ignoredMediaTypes=[]]
2024-03-11T12:55:29.221+05:00 DEBUG 10104 --- [nio-9000-exec-1] s.w.a.DelegatingAuthenticationEntryPoint : Match found! Executing org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint@480c62cf
2024-03-11T12:55:29.222+05:00 DEBUG 10104 --- [nio-9000-exec-1] o.s.s.web.DefaultRedirectStrategy        : Redirecting to http://localhost:9000/login

I begin by entering URL which redirect me to login page:

http://localhost:9000/oauth2/authorize?response_type=code&client_id=oidc-client&redirect_uri=http://127.0.0.1:8222/login/oauth2/code/oidc-client&scope=openid+profile

Then, I grab code:

http://127.0.0.1:8222/login/oauth2/code/oidc-client?code=SCOfg4kD9itAXmNIDgDnFatFVrjXHx7dkRsljY-QEppoLZ4NZ_m094BPTqu4yhK5Ulil2UKea_rmMzdeSJijPasu5A4CYzoe8IVW6K74OHhIMby6D0EWfhmOv1_uWMWP

Then , I use postman to get access token but get "invalid_grant" error: PostMan

I will be grateful if someone help me understand what am I doing wrong.

spring spring-boot oauth-2.0 spring-authorization-server
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gusplean On

Per RFC 6749

4.1.3. Access Token Request

The client makes a request to the token endpoint by sending the
following parameters using the "application/x-www-form-urlencoded"
format per Appendix B with a character encoding of UTF-8 in the HTTP
request entity-body:

grant_type REQUIRED. Value MUST be set to "authorization_code".

code REQUIRED. The authorization code received from the authorization server.

redirect_uri REQUIRED, if the "redirect_uri" parameter was included in the authorization request as described in Section 4.1.1, and their values MUST be identical.

client_id REQUIRED, if the client is not authenticating with the authorization server as described in Section 3.2.1.

If the client type is confidential or the client was issued client credentials (or assigned other authentication requirements), the
client MUST authenticate with the authorization server as described
in Section 3.2.1.

invalid_grant The provided authorization grant (e.g., authorization code, resource owner credentials) or refresh token is invalid, expired, revoked, does not match the redirection URI used in the authorization request, or was issued to another client.

In your case, it seems like you're missing client_id (oidc-client) and client_secret, making the grant invalid

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