# OAuth2.0 资源服务器承载令牌 ## 不记名令牌解析 默认情况下,Resource Server 在`Authorization`头中查找承载令牌。然而,这是可以定制的。 例如,你可能需要从自定义报头读取承载令牌。为了实现这一点,你可以将`ServerBearerTokenAuthenticationConverter`的一个实例连接到 DSL 中,正如你在下面的示例中所看到的那样: 例 1。自定义承载令牌标头 爪哇 ``` ServerBearerTokenAuthenticationConverter converter = new ServerBearerTokenAuthenticationConverter(); converter.setBearerTokenHeaderName(HttpHeaders.PROXY_AUTHORIZATION); http .oauth2ResourceServer(oauth2 -> oauth2 .bearerTokenConverter(converter) ); ``` Kotlin ``` val converter = ServerBearerTokenAuthenticationConverter() converter.setBearerTokenHeaderName(HttpHeaders.PROXY_AUTHORIZATION) return http { oauth2ResourceServer { bearerTokenConverter = converter } } ``` ## 承载令牌传播 既然你已经拥有了一个无记名令牌,那么将其传递给下游服务可能会很方便。这对`[ServerBearerExchangeFilterFunction](https://docs.spring.io/spring-security/site/docs/5.6.2/api/org/springframework/security/oauth2/server/resource/web/reactive/function/client/ServerBearerExchangeFilterFunction.html)`来说非常简单,你可以在下面的示例中看到这一点: 爪哇 ``` @Bean public WebClient rest() { return WebClient.builder() .filter(new ServerBearerExchangeFilterFunction()) .build(); } ``` Kotlin ``` @Bean fun rest(): WebClient { return WebClient.builder() .filter(ServerBearerExchangeFilterFunction()) .build() } ``` 当上面的`WebClient`用于执行请求时, Spring Security 将查找当前的`Authentication`并提取任何`[AbstractOAuth2Token](https://docs.spring.io/spring-security/site/docs/5.6.2/api/org/springframework/security/oauth2/core/AbstractOAuth2Token.html)`凭据。然后,它将在`Authorization`头中传播该令牌。 例如: 爪哇 ``` this.rest.get() .uri("https://other-service.example.com/endpoint") .retrieve() .bodyToMono(String.class) ``` Kotlin ``` this.rest.get() .uri("https://other-service.example.com/endpoint") .retrieve() .bodyToMono() ``` 将调用`[https://other-service.example.com/endpoint](https://other-service.example.com/endpoint)`,为你添加承载令牌`Authorization`头。 在需要重写此行为的地方,你只需自己提供标题,就像这样: 爪哇 ``` this.rest.get() .uri("https://other-service.example.com/endpoint") .headers(headers -> headers.setBearerAuth(overridingToken)) .retrieve() .bodyToMono(String.class) ``` Kotlin ``` rest.get() .uri("https://other-service.example.com/endpoint") .headers { it.setBearerAuth(overridingToken) } .retrieve() .bodyToMono() ``` 在这种情况下,过滤器将向后退,只需将请求转发到 Web 筛选链的其余部分。 | |与[OAuth2.0 客户端过滤功能](https://docs.spring.io/spring-security/site/docs/current-SNAPSHOT/api/org/springframework/security/oauth2/client/web/reactive/function/client/ServerOAuth2AuthorizedClientExchangeFilterFunction.html)不同,如果令牌过期,此筛选函数不尝试更新令牌。
要获得此级别的支持,请使用 OAuth2.0 客户端筛选。| |---|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| [多租约](multitenancy.html)[保护免受剥削](../../exploits/index.html)