在微服务架构中,基本包含以下常见的组件。服务注册与发现、服务消费、负载均衡、断路器、只能路由、配置管理等。一个简单的微服务架构系统如下
一、Zuul简介
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,zuul默认和Ribbon结合实现了负载均衡的功能。
/api/user --> user (转发)
/api/shop -->shop (转发)
二、pom文件中引入下面几个依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
三、入口applicaton类加上注解@EnableZuulProxy,开启zuul的功能:
@SpringBootApplication @EnableZuulProxy @EnableEurekaClient @EnableDiscoveryClient public class ServiceZuulApplication { public static void main(String[] args) { SpringApplication.run( ServiceZuulApplication.class, args ); } }
四、修改配置文件(以/api-a/ 开头的请求都转发给service-ribbon服务;以/api-b/开头的请求都转发给service-feign服务)
eureka: client: serviceUrl: defaultZone: http://localhost:8761/eureka/ server: port: 8769 spring: application: name: service-zuul zuul: routes: api-a: path: /api-a/** serviceId: service-ribbon api-b: path: /api-b/** serviceId: service-feign
五、实例结束