我在spring云网关应用程序中设置CORS配置时遇到问题。我已经设置了以下配置，以允许一切：
spring:
cloud:
gateway:
globalcors:
corsConfigurations:
'[/**]':
allowedOrigins: "*"
allowedMethods: "*"
allowedHeaders: "authorization"
然而，当我调用网关的端点时，我得到的是：
OPTIONS http://localhost:8080/api/spot/spots 403 (Forbidden)
localhost/:1 Access to XMLHttpRequest at 'http://localhost:8080/api/spot/spots' from origin 'http://localhost:3000' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
当我通过UI传递网关来调用其中一个服务时，请求处理得很好。然而，我没有看到任何选项请求。
一旦我将UI指向网关主机，就会出现错误。
同样在"网络"选项卡中，请求显示为"失败"，没有其他信息。任何应用程序日志中也没有任何内容。这些是响应标头：
HTTP/1.1 200 OK
transfer-encoding: chunked
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers
Access-Control-Allow-Origin: *
Vary: Origin
Vary: Access-Control-Request-Method
Vary: Access-Control-Request-Headers
Access-Control-Allow-Origin: *
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
X-Frame-Options: DENY
Content-Type: application/json
Date: Tue, 10 Mar 2020 21:24:11 GMT
当重新启动Item服务(负责这个端点(时，我得到一个500:
timestamp: "2020-03-10T21:28:33.568+0000"
path: "/api/spot/spots"
status: 500
error: "Internal Server Error"
message: "Connection refused: localhost/127.0.0.1:49508"
requestId: "68570bc1"
它指向旧的随机端口，这意味着网关可以以某种方式连接到它。
你知道我错过了什么吗？
谢谢。
- 该应用程序是开源的，可在此处获得
SpotController可在此处找到- 该端点的spring安全配置可以在这里找到
- 网关配置可以在这里找到
以下是在调试时设置的api网关应用程序的日志(此处为完整日志(：
2020-03-10 22:24:10.744 DEBUG 57262 --- [ionManagerTimer] h.i.c.PoolingHttpClientConnectionManager : Closing expired connections
2020-03-10 22:24:10.812 DEBUG 57262 --- [er-item-service] c.netflix.loadbalancer.BaseLoadBalancer : LoadBalancer: PingTask executing [1] servers configured
2020-03-10 22:24:11.464 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Increasing pending responses, now 1
2020-03-10 22:24:11.464 DEBUG 57262 --- [ctor-http-nio-2] reactor.netty.http.server.HttpServer : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Handler is being applied: org.springframework.http.server.reactive.ReactorHttpHandlerAdapter@528c0cbe
2020-03-10 22:24:11.464 DEBUG 57262 --- [ctor-http-nio-2] o.s.w.s.adapter.HttpWebHandlerAdapter : [d4a47354] HTTP OPTIONS "/api/spot/spots"
2020-03-10 22:24:11.466 DEBUG 57262 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping : Route matched: item-service
2020-03-10 22:24:11.466 DEBUG 57262 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping : Mapping [Exchange: OPTIONS http://localhost:8080/api/spot/spots] to Route{id='item-service', uri=lb://item-service, order=0, predicate=Paths: [/api/spot/**], match trailing slash: true, gatewayFilters=[], metadata={}}
2020-03-10 22:24:11.466 DEBUG 57262 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping : [d4a47354] Mapped to org.springframework.cloud.gateway.handler.FilteringWebHandler@14780192
2020-03-10 22:24:11.467 DEBUG 57262 --- [ctor-http-nio-2] o.s.w.s.adapter.HttpWebHandlerAdapter : [d4a47354] Completed 200 OK
2020-03-10 22:24:11.468 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Last HTTP response frame
2020-03-10 22:24:11.468 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] No sendHeaders() called before complete, sending zero-length header
2020-03-10 22:24:11.468 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Decreasing pending responses, now 0
2020-03-10 22:24:11.468 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Last HTTP packet was sent, terminating the channel
2020-03-10 22:24:11.468 DEBUG 57262 --- [ctor-http-nio-2] r.n.channel.ChannelOperationsHandler : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] No ChannelOperation attached. Dropping: EmptyLastHttpContent
2020-03-10 22:24:11.486 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Increasing pending responses, now 1
2020-03-10 22:24:11.486 DEBUG 57262 --- [ctor-http-nio-2] reactor.netty.http.server.HttpServer : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Handler is being applied: org.springframework.http.server.reactive.ReactorHttpHandlerAdapter@528c0cbe
2020-03-10 22:24:11.486 DEBUG 57262 --- [ctor-http-nio-2] o.s.w.s.adapter.HttpWebHandlerAdapter : [d4a47354] HTTP GET "/api/spot/spots"
2020-03-10 22:24:11.488 DEBUG 57262 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping : Route matched: item-service
2020-03-10 22:24:11.488 DEBUG 57262 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping : Mapping [Exchange: GET http://localhost:8080/api/spot/spots] to Route{id='item-service', uri=lb://item-service, order=0, predicate=Paths: [/api/spot/**], match trailing slash: true, gatewayFilters=[], metadata={}}
2020-03-10 22:24:11.488 DEBUG 57262 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping : [d4a47354] Mapped to org.springframework.cloud.gateway.handler.FilteringWebHandler@14780192
2020-03-10 22:24:11.488 DEBUG 57262 --- [ctor-http-nio-2] o.s.c.g.handler.FilteringWebHandler : Sorted gatewayFilterFactories: [[GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.RemoveCachedBodyFilter@22bf9122}, order = -2147483648], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.AdaptCachedBodyGlobalFilter@69aa7d76}, order = -2147482648], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.NettyWriteResponseFilter@3d88e6b9}, order = -1], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.ForwardPathFilter@9687f55}, order = 0], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.GatewayMetricsFilter@671d03bb}, order = 0], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.RouteToRequestUrlFilter@208205ed}, order = 10000], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.LoadBalancerClientFilter@36068727}, order = 10100], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.WebsocketRoutingFilter@5700c9db}, order = 2147483646], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.NettyRoutingFilter@72543547}, order = 2147483647], [GatewayFilterAdapter{delegate=org.springframework.cloud.gateway.filter.ForwardRoutingFilter@73afe2b7}, order = 2147483647]]
2020-03-10 22:24:11.489 DEBUG 57262 --- [ctor-http-nio-2] c.n.loadbalancer.ZoneAwareLoadBalancer : Zone aware logic disabled or there is only one zone
2020-03-10 22:24:11.490 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b] Created new pooled channel, now 1 active connections and 0 inactive connections
2020-03-10 22:24:11.491 DEBUG 57262 --- [ctor-http-nio-2] reactor.netty.channel.BootstrapHandlers : [id: 0x687fa33b] Initialized pipeline DefaultChannelPipeline{(BootstrapHandlers$BootstrapInitializerHandler#0 = reactor.netty.channel.BootstrapHandlers$BootstrapInitializerHandler), (reactor.left.httpCodec = io.netty.handler.codec.http.HttpClientCodec), (reactor.right.reactiveBridge = reactor.netty.channel.ChannelOperationsHandler)}
2020-03-10 22:24:11.496 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] Channel connected, now 1 active connections and 0 inactive connections
2020-03-10 22:24:11.496 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] onStateChange(PooledConnection{channel=[id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508]}, [connected])
2020-03-10 22:24:11.496 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] onStateChange(GET{uri=/, connection=PooledConnection{channel=[id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508]}}, [configured])
2020-03-10 22:24:11.496 DEBUG 57262 --- [ctor-http-nio-2] r.netty.http.client.HttpClientConnect : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] Handler is being applied: {uri=http://localhost:49508/api/spot/spots, method=GET}
2020-03-10 22:24:11.497 DEBUG 57262 --- [ctor-http-nio-2] reactor.netty.channel.FluxReceive : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Subscribing inbound receiver [pending: 0, cancelled:false, inboundDone: true]
2020-03-10 22:24:11.497 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] onStateChange(GET{uri=/api/spot/spots, connection=PooledConnection{channel=[id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508]}}, [request_sent])
2020-03-10 22:24:11.579 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.client.HttpClientOperations : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] Received response (auto-read:false) : [Vary=Origin, Vary=Access-Control-Request-Method, Vary=Access-Control-Request-Headers, Access-Control-Allow-Origin=*, X-Content-Type-Options=nosniff, X-XSS-Protection=1; mode=block, Cache-Control=no-cache, no-store, max-age=0, must-revalidate, Pragma=no-cache, Expires=0, X-Frame-Options=DENY, Content-Type=application/json, Transfer-Encoding=chunked, Date=Tue, 10 Mar 2020 21:24:11 GMT]
2020-03-10 22:24:11.579 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] onStateChange(GET{uri=/api/spot/spots, connection=PooledConnection{channel=[id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508]}}, [response_received])
2020-03-10 22:24:11.580 DEBUG 57262 --- [ctor-http-nio-2] reactor.netty.channel.FluxReceive : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] Subscribing inbound receiver [pending: 0, cancelled:false, inboundDone: false]
2020-03-10 22:24:11.581 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.client.HttpClientOperations : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] Received last HTTP packet
2020-03-10 22:24:11.581 DEBUG 57262 --- [ctor-http-nio-2] o.s.w.s.adapter.HttpWebHandlerAdapter : [d4a47354] Completed 200 OK
2020-03-10 22:24:11.581 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Last HTTP response frame
2020-03-10 22:24:11.581 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Decreasing pending responses, now 0
2020-03-10 22:24:11.581 DEBUG 57262 --- [ctor-http-nio-2] r.n.http.server.HttpServerOperations : [id: 0xd4a47354, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:59021] Last HTTP packet was sent, terminating the channel
2020-03-10 22:24:11.581 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] onStateChange(GET{uri=/api/spot/spots, connection=PooledConnection{channel=[id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508]}}, [disconnecting])
2020-03-10 22:24:11.581 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] Releasing channel
2020-03-10 22:24:11.582 DEBUG 57262 --- [ctor-http-nio-2] r.n.resources.PooledConnectionProvider : [id: 0x687fa33b, L:/127.0.0.1:61299 - R:localhost/127.0.0.1:49508] Channel cleaned, now 0 active connections and 1 inactive connections
2020-03-10 22:24:11.831 DEBUG 57262 --- [erListUpdater-1] c.n.l.DynamicServerListLoadBalancer : List of Servers for item-service obtained from Discovery client: [localhost:49508]
2020-03-10 22:24:11.831 DEBUG 57262 --- [erListUpdater-1] c.n.l.ZoneAffinityServerListFilter : Determining if zone affinity should be enabled with given server list: [localhost:49508]
2020-03-10 22:24:11.831 DEBUG 57262 --- [erListUpdater-1] c.n.l.ZoneAffinityServerListFilter : zoneAffinity is overriden. blackOutServerPercentage: 0.0, activeReqeustsPerServer: 0.0, availableServers: 1
2020-03-10 22:24:11.831 DEBUG 57262 --- [erListUpdater-1] c.n.l.DynamicServerListLoadBalancer : Filtered List of Servers for item-service obtained from Discovery client: [localhost:49508]
2020-03-10 22:24:11.831 DEBUG 57262 --- [erListUpdater-1] c.netflix.loadbalancer.BaseLoadBalancer : LoadBalancer [item-service]: clearing server list (SET op)
2020-03-10 22:24:11.831 DEBUG 57262 --- [erListUpdater-1] c.netflix.loadbalancer.BaseLoadBalancer : LoadBalancer [item-service]: addServer [localhost:49508]
2020-03-10 22:24:11.831 DEBUG 57262 --- [erListUpdater-1] c.n.l.DynamicServerListLoadBalancer : Setting server list for zones: {defaultzone=[localhost:49508]}
2020-03-10 22:24:11.832 DEBUG 57262 --- [erListUpdater-1] c.netflix.loadbalancer.BaseLoadBalancer : LoadBalancer [item-service_defaultzone]: clearing server list (SET op)
2020-03-10 22:24:11.832 DEBUG 57262 --- [erListUpdater-1] c.netflix.loadbalancer.BaseLoadBalancer : LoadBalancer [item-service_defaultzone]: addServer [localhost:49508]
2020-03-10 22:24:11.832 DEBUG 57262 --- [erListUpdater-1] c.netflix.loadbalancer.BaseLoadBalancer : LoadBalancer [item-service]: forceQuickPing invoking
2020-03-10 22:24:11.832 DEBUG 57262 --- [erListUpdater-1] c.netflix.loadbalancer.BaseLoadBalancer : LoadBalancer: PingTask executing [1] servers configured
是否尝试将allowedHeaders: "authorization"更改为allowedHeaders: "*"。我也遇到了同样的问题，只需将allowHeaders更改为通配符就可以修复，因为我从客户端接收的是标头x-requested-with, authorization。
配置看起来不错，但可能没有生效。当application.properties和application.yml都在资源下时，可能会发生这种情况，我遇到了同样的问题。
只保留一个对我有效。我的application.properties文件有以下cors设置。
spring.cloud.gateway.globalcors.add-to-simple-url-handler-mapping=true
spring.cloud.gateway.globalcors.corsConfigurations.[/**].allowedOrigins=*
spring.cloud.gateway.globalcors.corsConfigurations.[/**].allowedHeaders=*
spring.cloud.gateway.globalcors.corsConfigurations.[/**].allowedMethods=*