前言

本文采用Spring cloud本文为2.1.8RELEASE，version=Greenwich.SR3

本文基于前两篇文章eureka-server、eureka-client、eureka-ribbon和eureka-feign的实现。
参考

• eureka-server
• eureka-client
• eureka-ribbon
• eureka-feign

概念

Zuul的主要功能是路由转发和过滤器。路由功能是微服务的一部分，例如将请求/api/goods转发到商品服务上、/api/order转发到订单服务上等。

Zull默认和Ribbon结合实现了负载均衡功能。

创建Zuul工程

1.1 创建sping boot工程：eureka-zuul

1.2 添加pom.xml相关依赖

<dependency>   <groupId>org.springframework.cloud</groupId>   <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId> </dependency> <dependency>   <groupId>org.springframework.cloud</groupId>   <artifactId>spring-cloud-starter-netflix-zuul</artifactId> </dependency>

1.3 application添加配置信息

spring:   application:     name: eureka-zuul server:   port: 8400  eureka:   instance:     hostname: localhost     lease-renewal-interval-in-seconds: 5     lease-expiration-duration-in-seconds: 10   client:     service-url:       defaultZone: http://eureka1.server.com:8701/eureka/,http://eureka2.server.com:8702/eureka/,http://eureka3.server.com:8703/eureka/  zuul:   routes:     eureka-ribbon: #对应服务名称,可以自定义（最好保持一致）       path: /ribbon/*       serviceId: eureka-ribbon #对应服务名称     eureka-feign:       path: /eureka-feign/*       serviceId: eureka-feign #对应服务名称

1.4 启动类EurekaZuulApplication增加注解

package spring.cloud.demo.eurekazuul;  import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.zuul.EnableZuulProxy;  @EnableZuulProxy @SpringBootApplication public class EurekaZuulApplication {      public static void