就是spring-boot的依赖要和spring-cloud-starter-gateway内置的依赖版本一致，比如web和webflux都为2.2.5.RELEASE,启动也会报错，不然就会404
Parameter 0 of method modifyRequestBodyGatewayFilterFactory in org.springframework.cloud.gateway.config.GatewayAutoConfiguration required a bean of type ‘org.springframework.http.codec.ServerCodecConfigurer’ that could not be found.
问题也是
我的版本: