Spring Cloud Gateway是Spring Cloud官方推出的第二代网关框架，取代Zuul网关。网关作为流量的，在微服务系统中有着非常作用，网关常见的功能有路由转发、权限校验、限流控制等作用。

gateway需要注册到nacos中去，需要引入以下的依赖：

<dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-loadbalancer</artifactId>
</dependency>

在配置文件application.pom文件：

spring:cloud:gateway:discovery:locator:enabled: truelower-case-service-id: trueroutes:- id: nacos-provideruri: http://localhost:8762predicates:- Path=/nacos-provider/**filters:- StripPrefix=1- id: order-domain# uri: lb://order-domainuri: http://localhost:8763predicates:- Path=/order-domain/**filters:- StripPrefix=1

在工程的启动文件加上相关注解

@SpringBootApplication
@EnableDiscoveryClient
public class gatewayApplication {public static void main(String[] args) {SpringApplication.run(gatewayApplication.class,args);}
}

成功