@Configuration@EnableOAuth2Clientpublic class RemoteResourceConfiguration {@Beanpublic OAuth2RestOperations restTemplate(OAuth2ClientContext oauth2ClientContext) {return new OAuth2RestTemplate(remote(), oauth2ClientContext);}}

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Import(OAuth2ClientConfiguration.class)
public @interface EnableOAuth2Client {}

@Configuration
public class OAuth2ClientConfiguration {@Beanpublic OAuth2ClientContextFilter oauth2ClientContextFilter() {OAuth2ClientContextFilter filter = new OAuth2ClientContextFilter();return filter;}@Bean@Scope(value = "request", proxyMode = ScopedProxyMode.INTERFACES)protected AccessTokenRequest accessTokenRequest(@Value("#{request.parameterMap}")Map<String, String[]> parameters, @Value("#{request.getAttribute('currentUri')}")String currentUri) {DefaultAccessTokenRequest request = new DefaultAccessTokenRequest(parameters);request.setCurrentUri(currentUri);return request;}@Configurationprotected static class OAuth2ClientContextConfiguration {@Resource@Qualifier("accessTokenRequest")private AccessTokenRequest accessTokenRequest;@Bean@Scope(value = "session", proxyMode = ScopedProxyMode.INTERFACES)public OAuth2ClientContext oauth2ClientContext() {return new DefaultOAuth2ClientContext(accessTokenRequest);}}}

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Import({AuthorizationServerEndpointsConfiguration.class, AuthorizationServerSecurityConfiguration.class})
public @interface EnableAuthorizationServer {}

    private AuthorizationServerEndpointsConfigurer endpoints = new AuthorizationServerEndpointsConfigurer();@Autowiredprivate ClientDetailsService clientDetailsService;@Autowiredprivate List<AuthorizationServerConfigurer> configurers = Collections.emptyList();@PostConstructpublic void init() {for (AuthorizationServerConfigurer configurer : configurers) {try {configurer.configure(endpoints);} catch (Exception e) {throw new IllegalStateException("Cannot configure enpdoints", e);}}endpoints.setClientDetailsService(clientDetailsService);}

    @Componentprotected static class TokenKeyEndpointRegistrar implements BeanDefinitionRegistryPostProcessor {private BeanDefinitionRegistry registry;@Overridepublic void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {String[] names = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(beanFactory,JwtAccessTokenConverter.class, false, false);if (names.length > 0) {BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(TokenKeyEndpoint.class);builder.addConstructorArgReference(names[0]);registry.registerBeanDefinition(TokenKeyEndpoint.class.getName(), builder.getBeanDefinition());}}@Overridepublic void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {this.registry = registry;}}

@Configuration
@Order(0)
@Import({ ClientDetailsServiceConfiguration.class, AuthorizationServerEndpointsConfiguration.class })
public class AuthorizationServerSecurityConfiguration extends WebSecurityConfigurerAdapter {@Autowiredprivate List<AuthorizationServerConfigurer> configurers = Collections.emptyList();@Autowiredprivate ClientDetailsService clientDetailsService;@Autowiredprivate AuthorizationServerEndpointsConfiguration endpoints;@Autowiredpublic void configure(ClientDetailsServiceConfigurer clientDetails) throws Exception {for (AuthorizationServerConfigurer configurer : configurers) {configurer.configure(clientDetails);}}@Overrideprotected void configure(AuthenticationManagerBuilder auth) throws Exception {// Over-riding to make sure this.disableLocalConfigureAuthenticationBldr = false// This will ensure that when this configurer builds the AuthenticationManager it will not attempt// to find another 'Global' AuthenticationManager in the ApplicationContext (if available),// and set that as the parent of this 'Local' AuthenticationManager.// This AuthenticationManager should only be wired up with an AuthenticationProvider// composed of the ClientDetailsService (wired in this configuration) for authenticating 'clients' only.
    }@Overrideprotected void configure(HttpSecurity http) throws Exception {AuthorizationServerSecurityConfigurer configurer = new AuthorizationServerSecurityConfigurer();FrameworkEndpointHandlerMapping handlerMapping = endpoints.oauth2EndpointHandlerMapping();http.setSharedObject(FrameworkEndpointHandlerMapping.class, handlerMapping);configure(configurer);http.apply(configurer);String tokenEndpointPath = handlerMapping.getServletPath("/oauth/token");String tokenKeyPath = handlerMapping.getServletPath("/oauth/token_key");String checkTokenPath = handlerMapping.getServletPath("/oauth/check_token");if (!endpoints.getEndpointsConfigurer().isUserDetailsServiceOverride()) {UserDetailsService userDetailsService = http.getSharedObject(UserDetailsService.class);endpoints.getEndpointsConfigurer().userDetailsService(userDetailsService);}// @formatter:off
        http.authorizeRequests().antMatchers(tokenEndpointPath).fullyAuthenticated().antMatchers(tokenKeyPath).access(configurer.getTokenKeyAccess()).antMatchers(checkTokenPath).access(configurer.getCheckTokenAccess()).and().requestMatchers().antMatchers(tokenEndpointPath, tokenKeyPath, checkTokenPath).and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.NEVER);// @formatter:onhttp.setSharedObject(ClientDetailsService.class, clientDetailsService);}protected void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception {for (AuthorizationServerConfigurer configurer : configurers) {configurer.configure(oauthServer);}}}

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Import(ResourceServerConfiguration.class)
public @interface EnableResourceServer {}

@Overrideprotected void configure(HttpSecurity http) throws Exception { ResourceServerSecurityConfigurer resources = new ResourceServerSecurityConfigurer();ResourceServerTokenServices services = resolveTokenServices();if (services != null) {resources.tokenServices(services);}else {if (tokenStore != null) {resources.tokenStore(tokenStore);}else if (endpoints != null) {resources.tokenStore(endpoints.getEndpointsConfigurer().getTokenStore());}}if (eventPublisher != null) {resources.eventPublisher(eventPublisher);}for (ResourceServerConfigurer configurer : configurers) {configurer.configure(resources);}// @formatter:offhttp.authenticationProvider(new AnonymousAuthenticationProvider("default"))// N.B. exceptionHandling is duplicated in resources.configure() so that// it works
        .exceptionHandling().accessDeniedHandler(resources.getAccessDeniedHandler()).and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and().csrf().disable();// @formatter:on
        http.apply(resources);if (endpoints != null) {// Assume we are in an Authorization Serverhttp.requestMatcher(new NotOAuthRequestMatcher(endpoints.oauth2EndpointHandlerMapping()));}for (ResourceServerConfigurer configurer : configurers) {// Delegates can add authorizeRequests() here
            configurer.configure(http);}if (configurers.isEmpty()) {// Add anyRequest() last as a fall back. Spring Security would// replace an existing anyRequest() matcher with this one, so to// avoid that we only add it if the user hasn't configured anything.
            http.authorizeRequests().anyRequest().authenticated();}}

@Overridepublic void init(HttpSecurity http) throws Exception {registerDefaultAuthenticationEntryPoint(http);}@SuppressWarnings("unchecked")private void registerDefaultAuthenticationEntryPoint(HttpSecurity http) {ExceptionHandlingConfigurer<HttpSecurity> exceptionHandling = http.getConfigurer(ExceptionHandlingConfigurer.class);if (exceptionHandling == null) {return;}ContentNegotiationStrategy contentNegotiationStrategy = http.getSharedObject(ContentNegotiationStrategy.class);if (contentNegotiationStrategy == null) {contentNegotiationStrategy = new HeaderContentNegotiationStrategy();}MediaTypeRequestMatcher preferredMatcher = new MediaTypeRequestMatcher(contentNegotiationStrategy,MediaType.APPLICATION_ATOM_XML, MediaType.APPLICATION_FORM_URLENCODED, MediaType.APPLICATION_JSON,MediaType.APPLICATION_OCTET_STREAM, MediaType.APPLICATION_XML, MediaType.MULTIPART_FORM_DATA,MediaType.TEXT_XML);preferredMatcher.setIgnoredMediaTypes(Collections.singleton(MediaType.ALL));exceptionHandling.defaultAuthenticationEntryPointFor(postProcess(authenticationEntryPoint), preferredMatcher);}

@Overridepublic void configure(HttpSecurity http) throws Exception {AuthenticationManager oauthAuthenticationManager = oauthAuthenticationManager(http);resourcesServerFilter = new OAuth2AuthenticationProcessingFilter();resourcesServerFilter.setAuthenticationEntryPoint(authenticationEntryPoint);resourcesServerFilter.setAuthenticationManager(oauthAuthenticationManager);if (eventPublisher != null) {resourcesServerFilter.setAuthenticationEventPublisher(eventPublisher);}if (tokenExtractor != null) {resourcesServerFilter.setTokenExtractor(tokenExtractor);}resourcesServerFilter = postProcess(resourcesServerFilter);resourcesServerFilter.setStateless(stateless);// @formatter:off
        http.authorizeRequests().expressionHandler(expressionHandler).and().addFilterBefore(resourcesServerFilter, AbstractPreAuthenticatedProcessingFilter.class).exceptionHandling().accessDeniedHandler(accessDeniedHandler).authenticationEntryPoint(authenticationEntryPoint);// @formatter:on}