`SetResponseHeader` 篩選器

SetResponseHeader 篩選器接受 name 和 value 參數。以下列表設定 SetResponseHeader 篩選器

application.yml

spring:
  cloud:
    gateway:
      mvc:
        routes:
        - id: setresponseheader_route
          uri: https://example.org
          filters:
          - SetResponseHeader=X-Response-Red, Blue

GatewaySampleApplication.java

import static org.springframework.cloud.gateway.server.mvc.filter.AfterFilterFunctions.setResponseHeader;
import static org.springframework.cloud.gateway.server.mvc.handler.GatewayRouterFunctions.route;
import static org.springframework.cloud.gateway.server.mvc.handler.HandlerFunctions.http;

@Configuration
class RouteConfiguration {

    @Bean
    public RouterFunction<ServerResponse> gatewayRouterFunctionsSetResponseHeader() {
        return route("addresponseheader")
                .GET("/anything/addresheader", http("https://example.org"))
                .after(setResponseHeader("X-Response-Red", "Blue"))
            .build();
    }
}

此 GatewayFilter 會取代 (而非新增) 具有指定名稱的所有標頭。因此，如果下游伺服器回應 X-Response-Red:1234，它將被取代為 X-Response-Red:Blue，這將是閘道用戶端將收到的內容。

SetResponseHeader 知道用於比對路徑或主機的 URI 變數。URI 變數可用於值中，並將在執行時展開。以下範例設定使用變數的 SetResponseHeader 篩選器

application.yml

spring:
  cloud:
    gateway:
      routes:
      - id: setresponseheader_route
        uri: https://example.org
        predicates:
        - Host: {segment}.myhost.org
        filters:
        - SetResponseHeader=foo, bar-{segment}

GatewaySampleApplication.java

import static org.springframework.cloud.gateway.server.mvc.filter.AfterFilterFunctions.setResponseHeader;
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.cloud.gateway.server.mvc.predicate.GatewayRequestPredicates.host;

@Configuration
class RouteConfiguration {

    @Bean
    public RouterFunction<ServerResponse> gatewayRouterFunctionsSetResponseHeader() {
		return route("add_response_header_route")
				.route(host("{segment}.myhost.org"), http("https://example.org"))
				.after(setResponseHeader("foo", "bar-{segment}"))
				.build();
    }
}

SetResponseHeader 篩選器

`SetResponseHeader` 篩選器