OAuth 2.0 Client

OAuth 2.0 客户端功能提供了支持，以按照 OAuth 2.0 Authorization Framework 中定义的客户端角色。

总体而言，所提供的核心特性包括：

Authorization Grant support

Client Authentication support

JWT Bearer

HTTP Client support

<<`WebClient` 集成用于响应式环境，oauth2Client-webclient-webflux>> （用于请求受保护资源）

ServerHttpSecurity.oauth2Client() DSL 提供了许多配置选项，用于定制 OAuth 2.0 客户端使用的核心组件。

以下代码显示了 ServerHttpSecurity.oauth2Client() DSL 提供的完整配置选项：

OAuth2 Client Configuration Options

Java
Kotlin

@Configuration
@EnableWebFluxSecurity
public class OAuth2ClientSecurityConfig {

	@Bean
	public SecurityWebFilterChain securityWebFilterChain(ServerHttpSecurity http) {
		http
			.oauth2Client(oauth2 -> oauth2
				.clientRegistrationRepository(this.clientRegistrationRepository())
				.authorizedClientRepository(this.authorizedClientRepository())
				.authorizationRequestRepository(this.authorizationRequestRepository())
				.authorizationRequestResolver(this.authorizationRequestResolver())
				.authenticationConverter(this.authenticationConverter())
				.authenticationManager(this.authenticationManager())
			);

		return http.build();
	}
}

@Configuration
@EnableWebFluxSecurity
class OAuth2ClientSecurityConfig {

    @Bean
    fun securityFilterChain(http: ServerHttpSecurity): SecurityWebFilterChain {
        http {
            oauth2Client {
                clientRegistrationRepository = clientRegistrationRepository()
                authorizedClientRepository = authorizedClientRepository()
                authorizationRequestRepository = authorizedRequestRepository()
                authorizationRequestResolver = authorizationRequestResolver()
                authenticationConverter = authenticationConverter()
                authenticationManager = authenticationManager()
            }
        }

        return http.build()
    }
}

ReactiveOAuth2AuthorizedClientManager 负责管理 OAuth 2.0 客户端的授权（或重新授权），与一个或多个 ReactiveOAuth2AuthorizedClientProvider(s) 协作。

以下代码显示了一个如何注册 ReactiveOAuth2AuthorizedClientManager @Bean 并将其与 ReactiveOAuth2AuthorizedClientProvider 组合关联的示例，该组合为 authorization_code、refresh_token、client_credentials 和 password 授权授权类型提供支持：

Java
Kotlin

@Bean
public ReactiveOAuth2AuthorizedClientManager authorizedClientManager(
		ReactiveClientRegistrationRepository clientRegistrationRepository,
		ServerOAuth2AuthorizedClientRepository authorizedClientRepository) {

	ReactiveOAuth2AuthorizedClientProvider authorizedClientProvider =
			ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
					.authorizationCode()
					.refreshToken()
					.clientCredentials()
					.password()
					.build();

	DefaultReactiveOAuth2AuthorizedClientManager authorizedClientManager =
			new DefaultReactiveOAuth2AuthorizedClientManager(
					clientRegistrationRepository, authorizedClientRepository);
	authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider);

	return authorizedClientManager;
}

@Bean
fun authorizedClientManager(
        clientRegistrationRepository: ReactiveClientRegistrationRepository,
        authorizedClientRepository: ServerOAuth2AuthorizedClientRepository): ReactiveOAuth2AuthorizedClientManager {
    val authorizedClientProvider: ReactiveOAuth2AuthorizedClientProvider = ReactiveOAuth2AuthorizedClientProviderBuilder.builder()
            .authorizationCode()
            .refreshToken()
            .clientCredentials()
            .password()
            .build()
    val authorizedClientManager = DefaultReactiveOAuth2AuthorizedClientManager(
            clientRegistrationRepository, authorizedClientRepository)
    authorizedClientManager.setAuthorizedClientProvider(authorizedClientProvider)
    return authorizedClientManager
}