Spring Cloud Gateway - 代理/转发URL的整个子部分

时间:2018-02-19 11:26:21

标签: spring spring-boot spring-cloud spring-cloud-gateway

我正在使用Spring Cloud Gateway 2.0.0.M6测试一个简单的网关。我只想将一个URL转发到另一个带有** regex

的URL

示例1:/ integration / sbl / foo / bar =>本地主机:4178 / A-整合/ SBL /富/酒吧

示例2:/ integration / sbl / baz / bad =>本地主机:4178 / A-整合/ SBL /巴兹/坏

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?

修改

我根据下面的回复尝试了以下内容

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/并期待http://localhost:4178/gb-samtykke-integration/api/sbl/income/回来,但它没有用。

输出结果显示:

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 个答案:

答案 0 :(得分:10)

您可以在路径过滤器中使用rewritePath功能,如此处的文档所述:

https://cloud.spring.io/spring-cloud-gateway/single/spring-cloud-gateway.html#_rewritepath_gatewayfilter_factory

相关部分:

  

5.12 RewritePath GatewayFilter Factory

     

RewritePath GatewayFilter Factory采用路径regexp参数   和替换参数。这使用Java正则表达式   灵活的方式来重写请求路径。

var selectizeRoot = {
  jQuery: require('jquery'),
  Sifter: require('sifter'),
  MicroPlugin: require('microplugin')
};

require('imports-loader?define=>false,exports=>false,this=>selectizeRoot!selectize');
  

对于/ foo / bar的请求路径,这会将路径设置为/ bar之前   发出下游请求。注意$ \替换为$   因为YAML规范。

在您的示例中,它看起来像:

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

答案 1 :(得分:2)

我们在这里遇到了类似的问题,尽管我同意博伊恩的回答,但指出“ uri”参数忽略URI的“ path”组件可能会很有用。在文档中并不清楚(或者至少我没有找到它),所以希望对其他人有帮助。

假设您要将/ foo处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,此方法按预期运行:

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

尽管此操作无法按预期进行(它忽略了/ bar):

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

答案 2 :(得分:0)

请在下面找到具有完整设置的两种配置类型。两种方法都会产生相同的结果。

设置:

  • 网关正在http://localhost:8090
  • 上运行
  • 名为/context的基本路径用作网关的入口点
  • my-resources上运行的名为http://localhost:8091/my-resources的服务。如果在没有参数的情况下调用/my-resources,则会返回所有资源。当使用参数调用它时,它将返回具有相应RID(如果有)
  • 的资源

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

方法1: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();
}

答案 3 :(得分:0)

没有提到使用rewritePath时更改contextPath的功能似乎被Spring Boot 2.3.X中的更改破坏了。而且RewritePathGatewayFilterFactory.Config在Hoxton.SR7 +中不包含用于传递新的contextPath的字段。

作为解决方法,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());