（第六篇）Springcloud之Zuul路由网关

一、简介

        Zuul包含了对请求的路由和过滤两个最主要的功能，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，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，以后访问微服务都是通过Zuul跳转后获得。

GitHub地址https://github.com/Netflix/zuul/wiki/Getting-Started

二、路由的基本配置

1、新建工程microservicecloud-zuul-9527模块

2、添加Maven依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>microservicecloud</artifactId>
        <groupId>com.hk.microservicedemo</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>microservicecloud-zuul-9527</artifactId>

    <dependencies>
        <!-- zuul路由网关 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zuul</artifactId>
        </dependency>
        <!--eureka注册中心-->
        <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>
            <groupId>com.hk.microservicedemo</groupId>
            <artifactId>microservicecloud-common</artifactId>
            <version>1.0-SNAPSHOT</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>

</project>

3、添加yml文件

server:
  port: 9527

spring:
  application:
    name: microservicecloud-zuul

eureka:
  client:
    service-url:
      defaultZone: http://eureka-7001.com:7001/eureka/,http://eureka-7002.com:7002/eureka/,http://eureka-7003.com:7003/eureka/
  instance:
    instance-id: zuul-9527
    prefer-ip-address: true


info:
  app.name: atguigu-microcloud
  company.name: www.atguigu.com
  build.artifactId: @project.artifactId@
  build.version: @project.version@

4、新建启动类

@SpringBootApplication
// 开启zuul
@EnableZuulProxy
public class Zuul9527_App {
    public static void main(String[] args) {
        SpringApplication.run(Zuul9527_App.class, args);
    }
}

5、启动

启动注册中心7001、启动生产者8001、启动zuul-9527

6、测试

普通请求

使用路由请求

三、路由访问映射规则

1、配置代理名称

• 修改yml文件

zuul:
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**

• 测试访问

使用注册名称访问：http://localhost:9527/microservicecloud-dept/dept/get/1

使用路由访问：http://localhost:9527/mydept/dept/get/1

2、设置真实服务名忽略

        也就是设置不可以使用真实服务名访问

• 修改yml文件

zuul:
  # 设置忽略真实服务名
  ignored-services: microservicecloud-dept
  # 设置路由策略
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**

• 测试访问

 使用注册名称访问：http://localhost:9527/microservicecloud-dept/dept/get/1

 使用路由访问：http://localhost:9527/mydept/dept/get/1

 3、设置同一公共前缀

zuul:
  # 设置公共前缀
  prefix: /hk
  # 设置忽略真实服务名
  ignored-services: microservicecloud-dept
  # 设置路由策略
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**

 4、zuul的整个yml文件

server:
  port: 9527

spring:
  application:
    name: microservicecloud-zuul

eureka:
  client:
    service-url:
      defaultZone: http://eureka-7001.com:7001/eureka/,http://eureka-7002.com:7002/eureka/,http://eureka-7003.com:7003/eureka/
  instance:
    instance-id: zuul-9527
    prefer-ip-address: true

info:
  app.name: atguigu-microcloud
  company.name: www.atguigu.com
  build.artifactId: @project.artifactId@
  build.version: @project.version@

zuul:
  # 设置公共前缀
  prefix: /hk
  # 设置忽略真实服务名
  ignored-services: microservicecloud-dept
  # 设置路由策略
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**

Springcloud第一季以完结，后期会发布第二季哦。