SpringCloud Gateway网关多路由配置访问404解决方案

文章目录

一、问题描述：SpringCloud + GateWay + Eureka访问出现404，Not Found

现象：网关成功注册进Eureka，但是通过网关访问时出现404

WhitelabelErrorPageThis application has no configured error view, so you are seeing this as a fallback.

MonJun0516:33:18 CST 2023[cb64c1a3-3]There was an unexpected error (type=NotFound, status=404).org.springframework.web.server.ResponseStatusException:404 NOT_FOUND
    at org.springframework.web.reactive.resource.ResourceWebHandler.lambda$handle$1(ResourceWebHandler.java:408)Suppressed:The stacktrace has been enhanced by Reactor, refer toadditional information below:Error has been observed at the following site(s):*__checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter[DefaultWebFilterChain]*__checkpoint ⇢ HTTP GET "/payment/timeout/1"[ExceptionHandlingWebHandler]OriginalStackTrace:
        at org.springframework.web.reactive.resource.ResourceWebHandler.lambda$handle$1(ResourceWebHandler.java:408)
        at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44)
        at reactor.core.publisher.Mono.subscribe(Mono.java:4397)
        at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:82)
        at reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:181)
        at reactor.core.publisher.MonoNext$NextSubscriber.onComplete(MonoNext.java:102)
        at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:368)

二、解决方案:

可以通过以下几种方式尝试解决，不是必须都配置，根据自己项目情况处理。

1、 配置 filters: - StripPrefix=1

配置 filters: - StripPrefix=1，与路由id同级，去除前缀

2、删除冲突依赖

网关中如果有 spring-boot-starter-actuator、spring-boot-starter-web 依赖，删除。

3、检查启动类

启动类没有直接写在主包下面，而是写在了子包下面，需要在启动类加上@ComponentScan(“xxx”)，xxx一定是你的主包名。

4、检查配置文件

检查配置文件中gateway相关的层级还有空格情况。

application.yml参考：

server:port:9527spring:application:name: cloud-gateway #微服务应用的名字cloud:gateway:routes:-id: payment_routh #payment_route    #路由的ID，没有固定规则但要求唯一，建议配合服务名uri: http://localhost:8001#匹配后提供服务的路由地址predicates:- Path=/payment/timeout/**# 断言，路径相匹配的进行路由filters:- StripPrefix=1
        -id: payment_routh2 #payment_route    #路由的ID，没有固定规则但要求唯一，建议配合服务名uri: http://localhost:8001#匹配后提供服务的路由地址predicates:- Path=/payment/ok/**# 断言，路径相匹配的进行路由filters:- StripPrefix=1
eureka:client:register-with-eureka:true#向注册中心注册自己fetch-registry:true#从EurekaServer抓取已有的注册信息，集群必须设置成true，才能配合ribbon负载均衡service-url:defaultZone: http://eureka7001.com:7001/eureka
  instance:instance-id: gateway9527 #主机名称修改prefer-ip-address:true#访问路径可以显示iphostname: cloud-gateway-service

如果这几种办法都没有解决，也可以尝试将target删除，重新编译试试。