`StripPrefix` Filter

StripPrefix 过滤器使用一个参数 parts。parts 参数指示在将请求发送到下游之前从请求中剥离路径中的部分数。以下列表配置了一个 StripPrefix 过滤器：

The StripPrefix filter takes one parameter, parts. The parts parameter indicates the number of parts in the path to strip from the request before sending it downstream. The following listing configures a StripPrefix filter:

application.yml

spring:
  cloud:
    gateway:
      mvc:
        routes:
        - id: nameRoot
          uri: https://nameservice
          predicates:
          - Path=/name/**
          filters:
          - StripPrefix=2

GatewaySampleApplication.java

import static org.springframework.cloud.gateway.server.mvc.filter.BeforeFilterFunctions.stripPrefix;
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> gatewayRouterFunctionsStripPrefix() {
		return route("nameRoot")
				.GET("/name/**", http("https://example.org"))
					.before(stripPrefix(2))
					.build();
    }
}

当通过网关向 /name/blue/red 发出请求时，向 nameService 发出的请求看上去就像 https://nameservice/red。

When a request is made through the gateway to /name/blue/red, the request made to nameservice looks like https://nameservice/red.

StripPrefix Filter

`StripPrefix` Filter