netflix-zuul.md

进一步了解Netflix Zuul

Netflix Zuul提供动态路由、监控、弹性、安全等的边缘服务。

在通过服务网关统一向外的提供REST API的微服务架构中，Netflix Zuul为微服务机构提供了前门保护的作用，同时将权限控制这些较重的非业务逻辑内容迁移到服务路由层面，使得服务集群主体能够具备更高的可复用性和可测试性。

创建zuul service

• 创建一个mvn工程，起名为zuul，核心依赖：

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

• 在程序的入口Application类加上@EnableZuulProxy注解开启配置服务器

  @SpringBootApplication
  @EnableDiscoveryClient
  @EnableZuulProxy
  public class GatewayApplication {
   
      public static void main(String[] args) {
          SpringApplication.run(GatewayApplication.class, args);
      }
  }     
  

• 配置文件

  server:
    port: 5000
   
  spring:
    application:
      name: zuul
   
  eureka:
    client:
      service-url:
        defaultZone: http://${EUREKA_HOST}:${EUREKA_PORT}/eureka/
   
  hystrix:
    command:
      default:
        execution:
          isolation:
            thread:
              timeoutInMilliseconds: 20000
   
  ribbon:
    ReadTimeout: 20000
    ConnectTimeout: 20000
   
  zuul:
    ignoredServices: '*'
    host:
      connect-timeout-millis: 20000
      socket-timeout-millis: 20000
   
    routes:
      routes:
      demo:
        path: /demo/**
        serviceId: eureka-service
        stripPrefix: false
        sensitiveHeaders: Cookie,Set-Cookie,Authorization
      user:
        path: /user/**
        serviceId: eureka-service
        stripPrefix: false
        sensitiveHeaders: Cookie,Set-Cookie,Authorization
      outer:
        path: /baidu/**
        url: http://www.baidu.com
  

  EUREKA_HOST：注册中心ip

  EUREKA_PORT：注册中心端口

• 访问地址

  http://DOCKER_HOST:DOCKER_PORT/feign