19

我正在使用Spring Cloud Gateway 2.0.0.M6 测试一个简单的网关。我只想用 ** 正则表达式将 URL 转发到另一个 URL

示例 1:/integration/sbl/foo/bar => localhost:4178/a-integration/sbl/foo/bar

示例 2:/integration/sbl/baz/bad => localhost:4178/a-integration/sbl/baz/bad

到目前为止,我已经写了以下内容,但它只转发到http://localhost:4178/a-integration/

 @Bean
public RouteLocator routeLocator(RouteLocatorBuilder builder) {
    String test = "http://localhost:4178/a-integration/";

    return builder.routes()
            .route("integration-test",
                    r -> r.path("/integration/sbl/**")
                            .uri(test)
            )
            .build();
}

如何修复上述代码以启用此行为?

编辑

我根据以下响应尝试了以下操作

String samtykke = "http://localhost:4178/";

return builder.routes()

        .route("samtykke", r -> r
                .path("/gb-integration/sbl/**")
                .filters(f -> f.rewritePath("/gb-integration/sbl/(?<segment>.*)", "/gb-samtykke-integration/${segment}"))
                .uri(samtykke))
        .build();

我尝试了 GET http://localhost:4177/gb-integration/sbl/api/sbl/income/并期望http://localhost:4178/gb-samtykke-integration/api/sbl/income/回来但它没用。

输出说:

2018-02-23 09:46:35.197 TRACE 6364 --- [ctor-http-nio-2] o.s.c.g.h.p.RoutePredicateFactory        : Pattern "/gb-integration/sbl/**" matches against value "[path='/gb-integration/sbl/api/sbl/income/']"
2018-02-23 09:46:35.198 DEBUG 6364 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping   : Route matched: samtykke
2018-02-23 09:46:35.198 DEBUG 6364 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping   : Mapping [Exchange: GET http://localhost:4177/gb-integration/sbl/api/sbl/income/] to Route{id='samtykke', uri=http://localhost:4178/, order=0, predicate=org.springframework.cloud.gateway.handler.predicate.PathRoutePredicateFactory$$Lambda$245/1803714790@1d0042df, gatewayFilters=[OrderedGatewayFilter{delegate=org.springframework.cloud.gateway.filter.factory.RewritePathGatewayFilterFactory$$Lambda$247/485237151@77da026a, order=0}]}
2018-02-23 09:46:35.200 DEBUG 6364 --- [ctor-http-nio-2] o.s.c.g.handler.FilteringWebHandler      : Sorted gatewayFilterFactories: [OrderedGatewayFilter{delegate=GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.NettyWriteResponseFilter@5c534b5b}, order=-1}, OrderedGatewayFilter{delegate=org.springframework.cloud.gateway.filter.factory.RewritePathGatewayFilterFactory$$Lambda$247/485237151@77da026a, order=0}, OrderedGatewayFilter{delegate=GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.RouteToRequestUrlFilter@396639b}, order=10000}, OrderedGatewayFilter{delegate=GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.NettyRoutingFilter@a18649a}, order=2147483647}, OrderedGatewayFilter{delegate=GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.ForwardRoutingFilter@2b22a1cc}, order=2147483647}, OrderedGatewayFilter{delegate=GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.WebsocketRoutingFilter@62573c86}, order=2147483647}]
2018-02-23 09:46:35.232 TRACE 6364 --- [ctor-http-nio-2] o.s.c.g.filter.RouteToRequestUrlFilter   : RouteToRequestUrlFilter start
2018-02-23 09:46:35.314 TRACE 6364 --- [ctor-http-nio-1] o.s.c.g.filter.NettyWriteResponseFilter  : NettyWriteResponseFilter start
4

4 回答 4

30

您可以在路径过滤器中使用 rewritePath 功能,如此处找到的文档所指定:

https://cloud.spring.io/spring-cloud-gateway/reference/html/#rewritepath-gatewayfilter-factory

相关部分:

5.12 RewritePath GatewayFilter 工厂

RewritePath GatewayFilter Factory 采用路径正则表达式参数和替换参数。这使用 Java 正则表达式以灵活的方式重写请求路径。

spring:   
  cloud:
     gateway:
       routes:
       - id: rewritepath_route
         uri: http://example.org
         predicates:
         - Path=/foo/**
         filters:
         - RewritePath=/foo/(?<segment>.*), /$\{segment}

对于 /foo/bar 的请求路径,这将在发出下游请求之前将路径设置为 /bar。注意 $\ 由于 YAML 规范,它被替换为 $。

在您的示例中,这看起来像:

@Bean
public RouteLocator routeLocator(RouteLocatorBuilder builder) {
    String test = "http://localhost:4178";

    return builder.routes()
            .route("integration-test", r -> r
                    .path("/integration/sbl/**")
                    .filters(f->f.rewritePath("/integration/(?<segment>.*)","/a-integration/${segment}"))
                    .uri(test)
                  )
            .build();
}
于 2018-02-21T12:55:21.170 回答
10

我们在这里遇到了类似的问题,虽然我同意 Boyen 的回应,但指出“uri”参数忽略 URI 的“路径”组件可能会很有用。这在文档中并不清楚(或者至少我还没有找到),所以我希望它对其他人有所帮助。

假设您要将在 /foo 收到的所有请求重定向到http://example.org/bar

例如:/foo/x/y/z --> http://example.org/bar/x/y/z

例如,这按预期工作:

spring:   
  cloud:
     gateway:
       routes:
       - id: rewritepath_route
         uri: http://example.org
         predicates:
         - Path=/foo/**
         filters:
         - RewritePath=/foo/(?<segment>.*), /bar/$\{segment}

虽然这不能按预期工作(它忽略 /bar):

spring:   
  cloud:
     gateway:
       routes:
       - id: rewritepath_route
         uri: http://example.org/bar
         predicates:
         - Path=/foo/**
         filters:
         - RewritePath=/foo/(?<segment>.*), /$\{segment}
于 2018-08-07T14:02:07.410 回答
2

请在下面找到具有完整设置的两种配置。两种方法产生相同的结果。

设置:

  • 网关正在运行http://localhost:8090
  • 一个名为的基本路径/context用作网关的入口点
  • 一个名为my-resourcesrunning on的服务http://localhost:8091/my-resources。当/my-resources不带参数调用时,它返回所有资源。当使用参数调用它时,它会返回具有相应RID(如果有)的资源

配置网关,以便将传输到的所有路径变量(可能没有)http://localhost:8090/context/my-resources/转发到 uri http://localhost:8091/my-resources/

方法一:使用application.yml

spring:
  cloud:
    gateway:
      routes:
      - id: route_id
        predicates:
        - Path=/context/my-resources/**
        filters:
        - RewritePath=/context/my-resources/(?<RID>.*), /my-resources/$\{RID}
        uri: http://localhost:8091

方法2:使用类似Java的配置

@Bean
public RouteLocator routes(RouteLocatorBuilder routeBuilder) {
    return routeBuilder.routes()
            .route("route_id",
                    route -> route
                            .path("/context/my-resources/**")
                            .filters(f -> f.rewritePath("/context/my-resources/(?<RID>.*)", "/my-resources/${RID}"))
                            .uri("http://localhost:8091")
            )
            .build();
}
于 2018-06-15T13:08:13.470 回答
0

注意到在使用 rewritePath 时更改 contextPath 的能力似乎被 Spring Boot 2.3.X 中的更改破坏了。并且 RewritePathGatewayFilterFactory.Config 不包含用于在 Hoxton.SR7+ 中传递新 contextPath 的字段。

作为一种解决方法,我创建了一个自定义 RewritePathGatewayFilter 并使用:

ServerHttpRequest request = exchange.getRequest().mutate().contextPath(newContextPath).path(newPath).build();
exchange.getAttributes().put(GATEWAY_REQUEST_URL_ATTR, request.getURI());
return chain.filter(exchange.mutate().request(request).build());
于 2020-09-03T02:43:21.663 回答