`AddRequestParameter` 篩檢程式

AddRequestParameter 篩檢程式接受 name 和 value 參數。以下範例設定 AddRequestParameter 篩檢程式

application.yml

spring:
  cloud:
    gateway:
      mvc:
        routes:
        - id: add_request_parameter_route
          uri: https://example.org
          filters:
          - AddRequestParameter=red, blue

GatewaySampleApplication.java

import static org.springframework.cloud.gateway.server.mvc.filter.BeforeFilterFunctions.addRequestParameter;
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> gatewayRouterFunctionsAddReqHeader() {
		return route("add_request_parameter_route")
				.GET("/anything/addrequestparam", http("https://example.org"))
					.before(addRequestParameter("red", "blue"))
					.build();
    }
}

這會將 red=blue 新增至所有符合請求的下游請求查詢字串。

AddRequestParameter 知道用於比對路徑或主機的 URI 變數。URI 變數可用於值中，並在執行階段展開。以下範例設定使用變數的 AddRequestParameter 篩檢程式

GatewaySampleApplication.java

import static org.springframework.cloud.gateway.server.mvc.filter.BeforeFilterFunctions.addRequestParameter;
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> gatewayRouterFunctionsAddReqHeader() {
		return route("add_request_parameter_route")
				.route(host("{segment}.myhost.org"), http("https://example.org"))
				.before(addRequestParameter("foo", "bar-{segment}"))
				.build();
    }
}

AddRequestParameter 篩檢程式

`AddRequestParameter` 篩檢程式