`SetResponseHeader` 過濾器

SetResponseHeader 過濾器接受 name 和 value 引數。以下清單配置了一個 SetResponseHeader 過濾器

application.yml

spring:
  cloud:
    gateway:
      mvc:
        routes:
        - id: setresponseheader_route
          uri: https://example.org
          predicates:
          - Path=/anything/setresponseheader
          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.filter.BeforeFilterFunctions.uri;
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("setresponseheader_route")
            .GET("/anything/setresponseheader", http())
            .before(uri("https://example.org"))
            .after(setResponseHeader("X-Response-Red", "Blue"))
            .build();
    }
}

此 GatewayFilter 會替換（而不是新增）所有具有給定名稱的頭。因此，如果下游伺服器響應了 X-Response-Red:1234，它將被替換為 X-Response-Red:Blue，這將是閘道器客戶端接收到的內容。

SetResponseHeader 過濾器知道用於匹配路徑或主機的 URI 變數。URI 變數可以在值中使用，並在執行時進行擴充套件。以下示例配置了一個使用變數的 SetResponseHeader 過濾器

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.filter.BeforeFilterFunctions.uri;
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("setresponseheader_route")
            .route(host("{segment}.myhost.org"), http())
            .before(uri("https://example.org"))
            .after(setResponseHeader("foo", "bar-{segment}"))
            .build();
    }
}

SetResponseHeader 過濾器

`SetResponseHeader` 過濾器