#### API 网关服务-Zuul - 场景举例 > 假设你后台部署了几百个服务，现在前端从浏览器直接发出请求，打个比方：请求一下库存服务，难道还让前端记着这服务的名字叫做xxxx-service？部署在好几台台机器上，不同的端口，就算前端记住这一个，你后台可有几百个服务的名称和地址呢？所以网关Zuul应运而生 - 所有请求统一从网关进入，如下图所示  - 引入依赖 ``` <!-- 服务网关 --> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-zuul</artifactId> </dependency> ``` - application.yml serviceId-服务名称唯一 ``` spring: application: name: sc-zuul eureka: client: serviceUrl: defaultZone: http://192.168.0.114:8001/eureka/,http://192.168.0.114:8002/eureka/,http://192.168.0.114:8003/eureka/ zuul: routes: api-a: path: /api-data/** serviceId: sc-eureka-client api-b: path: /api-view/** serviceId: sc-feign server: port: 9999 ``` - 启动类 ``` package com.dg.sc.zuul; import org.springframework.boot.SpringApplication; import org.springframework.cloud.client.SpringCloudApplication; import org.springframework.cloud.netflix.zuul.EnableZuulProxy; /** * 〈服务网关〉 * * @author xieth * @create 2019/6/11 * @since 1.0.0 */ @SpringCloudApplication @EnableZuulProxy //服务网关 public class ZuulApplication { public static void main(String[] args) { SpringApplication.run( ZuulApplication.class,args ); } } ``` - 注册中心界面可以看到Zuul服务已经注册成功  - 运行，浏览器输入 [http://localhost:9999/api-view/products](http://localhost:9999/api-view/products)  - http://localhost:9999/api-view/products 等价于 http://localhost:4444/products