DedupeResponseHeader
篩選器
DedupeResponseHeader
GatewayFilter 工廠接受 name
參數和選用的 strategy
參數。name
可以包含以空格分隔的標頭名稱清單。以下範例設定 DedupeResponseHeader
篩選器
application.yml
spring:
cloud:
gateway:
mvc:
routes:
- id: dedupe_response_header_route
uri: https://example.org
filters:
- DedupeResponseHeader=Access-Control-Allow-Credentials Access-Control-Allow-Origin
GatewaySampleApplication.java
import static org.springframework.cloud.gateway.server.mvc.filter.AfterFilterFunctions.dedupeResponseHeader;
import static org.springframework.cloud.gateway.server.mvc.handler.GatewayRouterFunctions.route;
import static org.springframework.cloud.gateway.server.mvc.handler.HandlerFunctions.http;
import static org.springframework.web.servlet.function.RequestPredicates.path;
@Configuration
class RouteConfiguration {
@Bean
public RouterFunction<ServerResponse> gatewayRouterFunctionsDedupeResponseHeader() {
return route("dedupe_response_header_route")
.route(path("/hello"), http("https://example.org"))
.after(dedupeResponseHeader("Access-Control-Allow-Credentials Access-Control-Allow-Origin"))
.build();
}
}
這會在閘道 CORS 邏輯和下游邏輯都新增 Access-Control-Allow-Credentials
和 Access-Control-Allow-Origin
回應標頭的情況下,移除重複的值。
DedupeResponseHeader
篩選器也接受選用的 strategy
參數。可接受的值為 RETAIN_FIRST
(預設值)、RETAIN_LAST
和 RETAIN_UNIQUE
。