SpringBoot OAuth2 error "Full authentication is required to access this resource" - spring-boot

Question

I am trying to implement OAuth2 - SpringBoot authentication.
I have configured a path with permitAll(), but even though it is configured, it shows error
{
"error": "unauthorized",
"error_description": "Full authentication is required to access this resource"
}
I am using postman to test and simply trying to fetch all users in DB. When I call, the control is not coming to RestController. I would like to just get the users list and permitAll() is provided.
Can anyone please help ?
I am posting the code below.
#Configuration
#EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
#Autowired
DataSource dataSource;
#Bean
public BCryptPasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
#Override
public void configure(HttpSecurity http) throws Exception {
http.csrf().disable().authorizeRequests().
antMatchers(HttpMethod.POST, "/api/**").permitAll().
antMatchers(HttpMethod.POST,"/admin/**").hasAnyRole("ADMIN").
anyRequest().authenticated();
}
#Override
public void configure(AuthenticationManagerBuilder builder) throws Exception{
builder.jdbcAuthentication().dataSource(dataSource)
.usersByUsernameQuery("select usrnam,usrpwd, case when usrsta='A' then true else false end from chsusrmst where usrnam=?")
.authoritiesByUsernameQuery("select usrnam,usrtyp from chsusrmst where usrnam=?");
}
}
#RestController
#RequestMapping("/api")
public class UserController {
#Autowired
private BCryptPasswordEncoder passwordEncoder;
#Autowired
private UserRepository userRepository;
#PostMapping("/user/register")
public String register(#RequestBody User user) {
String encodedPassword = passwordEncoder.encode(user.getUserPassword());
user.setUserPassword(encodedPassword);
userRepository.save(user);
return "User created";
}
#PostMapping("/admin/findUser")
public User findUser(#RequestBody User user) {
return userRepository.findByUserName(user.getUserName());
}
#PostMapping("/user/findAllUsers")
public List<User> findAllUsers() {
return userRepository.findAll();
}
}
#Configuration
#EnableAuthorizationServer
public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
private final AuthenticationManager authenticationManager;
private final PasswordEncoder passwordEncoder;
private final UserDetailsService userDetailsService;
#Value("${jwt.clientId:client}")
private String clientId;
#Value("${jwt.client-secret:secret}")
private String clientSecret;
#Value("${jwt.signing-key:123}")
private String jwtSigningKey;
#Value("${jwt.accessTokenValidititySeconds:43200}") // 12 hours
private int accessTokenValiditySeconds;
#Value("${jwt.authorizedGrantTypes:password,authorization_code,refresh_token}")
private String[] authorizedGrantTypes;
#Value("${jwt.refreshTokenValiditySeconds:2592000}") // 30 days
private int refreshTokenValiditySeconds;
public AuthorizationServerConfig(AuthenticationManager authenticationManager, PasswordEncoder passwordEncoder, UserDetailsService userDetailsService) {
this.authenticationManager = authenticationManager;
this.passwordEncoder = passwordEncoder;
this.userDetailsService = userDetailsService;
}
#Override
public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
clients.inMemory()
.withClient(clientId)
.secret(passwordEncoder.encode(clientSecret))
.accessTokenValiditySeconds(accessTokenValiditySeconds)
.refreshTokenValiditySeconds(refreshTokenValiditySeconds)
.authorizedGrantTypes(authorizedGrantTypes)
.scopes("read", "write")
.resourceIds("api");
}
#Override
public void configure(final AuthorizationServerEndpointsConfigurer endpoints) {
endpoints
.accessTokenConverter(accessTokenConverter())
.userDetailsService(userDetailsService)
.authenticationManager(authenticationManager);
}
#Bean
JwtAccessTokenConverter accessTokenConverter() {
JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
return converter;
}
}
#Configuration
#EnableResourceServer
public class ResourceServer extends ResourceServerConfigurerAdapter {
#Override
public void configure(ResourceServerSecurityConfigurer serverSecurityConfigurer) {
serverSecurityConfigurer.resourceId("api");
}
}

Answer 1

Thanks for your consideration. I found the issue. HttpSecurity configuration was missing in Resource server and it has been resolved by adding below section.
http
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.and()
.antMatcher("/**")
.authorizeRequests()
.antMatchers("/user**").permitAll()
.antMatchers("/user/**").permitAll()
.antMatchers("/admin**").hasAuthority("ADMIN")
.antMatchers("/api/**").authenticated()
.anyRequest().authenticated();