SpringCloud学习系列-zuul路由网关

Posted 2020-11-23 XiangHuiBlog

zuul路由网关

  1.是什么

    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

    提供=代理+路由+过滤三大功能

    2.能干嘛

     路由、过滤

   官网资料：https://github.com/Netflix/zuul/wiki/Getting-Started

   3.实验代码-路由基本配置

    1.新建Module模块microservicecloud-zuul-gateway-9527

    2.修改Pom

    

 
<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">
  <modelVersion>4.0.0</modelVersion>
 
  <parent>
   <groupId>com.atguigu.springcloud</groupId>
   <artifactId>microservicecloud</artifactId>
   <version>0.0.1-SNAPSHOT</version>
  </parent>
 
  <artifactId>microservicecloud-zuul-gateway-9527</artifactId>
 
  <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>
     <groupId>com.atguigu.springcloud</groupId>
     <artifactId>microservicecloud-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>
 
</project>

 

  3.修改ym

   

server: 
  port: 9527
 
spring: 
  application:
    name: microservicecloud-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: $project.version$

4.hosts修改127.0.0.1  myzuul.com

5.主启动类

package com.atguigu.springcloud;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
 
@SpringBootApplication
@EnableZuulProxy
public class Zuul_9527_StartSpringCloudApp
{
  public static void main(String[] args)
  {
   SpringApplication.run(Zuul_9527_StartSpringCloudApp.class, args);
  }
}
 

7.启动

  三个eureka集群

 一个服务提供类microservicecloud-provider-dept-8001

一个路由

8.测试

  不用路由：http://localhost:8001/dept/get/2

  启用路由：http://myzuul.com:9527/microservicecloud-dept/dept/get/2

 4.实验代码-路由访问映射规则

   1.工程microservicecloud-zuul-gateway-9527

   2.代理名称

    yml

   

 
before
http://myzuul.com:9527/microservicecloud-dept/dept/get/2
 
 
zuul: 
  routes: 
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**
 
after
http://myzuul.com:9527/mydept/dept/get/1
 
 
 
 

  此时问题

   路由访问OK:http://myzuul.com:9527/mydept/dept/get/1

   原路径访问OK:http://myzuul.com:9527/microservicecloud-dept/dept/get/2

3.原真实服务名忽略:

  yml

  

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

单个具体，多个可以用"*"

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

5.设置统一公共前缀

YML

 
zuul: 
  prefix: /atguigu
  ignored-services: "*"
  routes: 
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**
 

http://myzuul.com:9527/atguigu/mydept/dept/get/1

最后yml

server: 
  port: 9527
 
spring: 
  application:
    name: microservicecloud-zuul-gateway
 
zuul: 
  prefix: /atguigu
  ignored-services: "*"
  routes: 
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**
 
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: $project.version$