SpringCloud-05-Zuul路由网关

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Zuul很简单，大致是这么玩的：

Zuul它本身也是一个注册在Eureka的微服务
它为其他的微服务提供一个统一的对外的窗口
这样便隐藏了服务的地址，同时也可以隐藏服务名，并且限定如何访问服务

依赖

<!--实体类 + web-->
<dependencies>
    <dependency>
        <groupId>org.example</groupId>
        <artifactId>springcloud-api</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!--热部署工具-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <version>2.3.2.RELEASE</version>
    </dependency>
    <!--ribbon-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-ribbon</artifactId>
        <version>1.4.7.RELEASE</version>
    </dependency>
    <!-- eureka  -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-eureka</artifactId>
        <version>1.4.7.RELEASE</version>
    </dependency>
    <!--Hystrix-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-hystrix</artifactId>
        <version>1.4.7.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
        <version>1.4.7.RELEASE</version>
    </dependency>
    <!--actuator完善监控信息-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!--zuul-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-zuul</artifactId>
        <version>1.4.7.RELEASE</version>
    </dependency>
</dependencies>

配置

server:
  port: 9527
spring:
  application:
    name: springcloud-zuul
eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
  instance:
    instance-id: zuul9527.com
    prefer-ip-address: true
info:
  app.name: gfpz-springcloud
  company.name: blog.possible2dream.cn
zuul:
  routes:
    mydept.serviceId: springcloud-provider-dept
    mydept.path: /mydept/**
  ignored-services: "*" #不能再使用这个路径访问了  *隐藏全部的微服务
  prefix: /knight  #设置公共的前缀

开启注解

@SpringBootApplication
@EnableZuulProxy
public class ZuulApplication_9527 {
    public static void main(String[] args) {
        SpringApplication.run(ZuulApplication_9527.class, args);
    }
}

host配置

127.0.0.1 www.possible2dream.cn

注册中心可以看到Zuul已经注册

http://eureka7001.com:7001/

通过Zuul所在的主机对服务进行调用（加了前缀，隐藏了服务名，隐藏了服务的IP，并且不允许带服务名访问（过滤））

http://www.possible2dream.cn:9527/knight/mydept/dept/get/2

（mydept实际等于标识了要访问的哪个服务，起到了路由的作用）

总结

Zuul包含了对请求的路由和过滤两个主要功能丶

至此，Springcloud Netflix五大神兽就已经完结：Ribbon，Eureka，Feign，Hystrix，Zuul丶

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https://github.com/ChenCurry/springcloud.git

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