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SpringCloud Gateway网关多路由配置访问404解决方案
作者:mmseoamin日期:2023-12-21

文章目录

  • 一、问题描述:SpringCloud + GateWay + Eureka访问出现404,Not Found
  • 二、解决方案:
    • 1、 配置 filters: - StripPrefix=1
    • 2、删除冲突依赖
    • 3、检查启动类
    • 4、检查配置文件

      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

      Whitelabel Error Page
      This application has no configured error view, so you are seeing this as a fallback.
      Mon Jun 05 16:33:18 CST 2023
      [cb64c1a3-3] There was an unexpected error (type=Not Found, status=404).
      org.springframework.web.server.ResponseStatusException: 404 NOT_FOUND
      	at org.springframework.web.reactive.resource.ResourceWebHandler.lambda$handle(ResourceWebHandler.java:408)
      	Suppressed: The stacktrace has been enhanced by Reactor, refer to additional information below: 
      Error has been observed at the following site(s):
      	*__checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain]
      	*__checkpoint ⇢ HTTP GET "/payment/timeout/1" [ExceptionHandlingWebHandler]
      Original Stack Trace:
      		at org.springframework.web.reactive.resource.ResourceWebHandler.lambda$handle(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)
      

      SpringCloud Gateway网关多路由配置访问404解决方案,第1张

      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

      SpringCloud Gateway网关多路由配置访问404解决方案,第2张

      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。

      SpringCloud Gateway网关多路由配置访问404解决方案,在这里插入图片描述,第3张

      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。

      SpringCloud Gateway网关多路由配置访问404解决方案,第4张

      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。

      SpringCloud Gateway网关多路由配置访问404解决方案,第5张

      application.yml参考:

      server:
        port: 9527
      spring:
        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ip
          hostname: 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。