引入依赖

<!-- gateway -->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>

路由配置

server:
  port: 8088
spring:
  application:
    name: api-gateway
  cloud:
    gateway:
      routes:
        - id: order_route # 路由唯一标识
          uri: http://localhost:8020 # 需要转发的地址
          # 断言规则  用于路由规则的匹配
          predicates:
            - Path=/order-serv/**
            # http://localhost:8088/order-serv/order/add  => http://localhost:8020/order-serv/order/add
          filters:
            - StripPrefix=1 # 转发去掉第一层路径
            # http://localhost:8020/order-serv/order/add => http://localhost:8020/order/add

访问效果