SpringCloud学习笔记（八）zuul路由网关

概述

Zuul包含了对请求的路由和过滤两个最主要的功能：

• 其中路由功能负责将外部请求转发到具体的微服务实例上，是实现外部访问统一入口的基础而过滤器功能则负责对请求的处理过程进行干预，是实现请求校验、服务聚合等功能的基础.
• Zuul和Eureka进行整合，将Zuul自身注册为Eureka服务治理下的应用，同时从Eureka中获得其他微服务的消息，也即以后的访问微服务都是通过Zuul跳转后获得。

 
    注意：Zuul服务最终还是会注册进Eureka
 
Zuul提供：代理、路由、过滤三大功能

路由配置

1、新建一个项目mycloud-zuul-gateway-9527作为mycloud的子项目，并引入依赖

<dependencies>
   <!-- zuul路由网关 -->
   <dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-starter-zuul</artifactId>
   </dependency> 
   <dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-starter-eureka</artifactId>
   </dependency>
   <!-- actuator监控 -->
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-actuator</artifactId>
   </dependency>
   <!--  hystrix容错-->
   <dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-starter-hystrix</artifactId>
   </dependency>
   <dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-starter-config</artifactId>
   </dependency>
   <!-- 日常标配 -->
 <dependency><!-- 引入自己定义的api通用包，可以使用Dept部门Entity -->
     <groupId>cn.it.tencent</groupId>
     <artifactId>mycloud-api</artifactId>
     <version>${project.version}</version>
   </dependency>
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-jetty</artifactId>
   </dependency>
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-test</artifactId>
   </dependency>
   <!-- 热部署插件 -->
   <dependency>
     <groupId>org.springframework</groupId>
     <artifactId>springloaded</artifactId>
   </dependency>
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-devtools</artifactId>
   </dependency>
  </dependencies>

2、添加application.yml

server: 
  port: 9527
 
spring: 
  application:
    name: mycloud-zuul-gateway
 
eureka: 
  client: 
    service-url: 
      defaultZone: http://eureka7001.com:7001/eureka,http://eureka7002.com:7002/eureka,http://eureka7003.com:7003/eureka  
  instance:
    instance-id: gateway-9527.com
    prefer-ip-address: true 
 
 
info:
  app.name: atguigu-microcloud
  company.name: www.atguigu.com
  build.artifactId: $project.artifactId$
  build.version: $project.version$

3、修改hosts添加127.0.0.1          myzuul.com

4、主启动类添加 @EnableZuulProxy注解

5、测试，启动eureka集群，启动mycloud-provider8001，再启动路由mycloud-zuul-gateway-9527

6、访问http://localhost:8001/dept/get/1不通过路由

访问http://myzuul.com:9527/springcloud-dept/dept/get/1通过路由

路由访问映射规则

application.yml中添加配置

zuul: 
  prefix: /huang             #添加前缀
  ignored-services: "*"      #屏蔽原有路径
  routes:                    #路径映射
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**

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