09_SpringCloud_Zuul路由网关

Zuul概述

github资料

可以从图上看到，Zuul主要就是API Gateway那块，言下之意就是所有的访问必须要经过API Gateway才能访问到微服务；

Zuul包含了对请求的路由和过滤两个最主要的功能：
其中路由功能负责对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信息，也即以后的访问微服务都是通过Zuul跳转后获得的；

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；

Zuul路由基本配置

新建microservicecloud-zuul-gateway-9527项目

pom.xml

修改部分：

<!-- Zuul路由网关相关依赖 -->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zuul</artifactId>
</dependency>

完整内容：

<?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>top.tomxwd</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

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

    <dependencies>
        <dependency>
            <groupId>top.tomxwd</groupId>
            <artifactId>microservicecloud-api</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!-- Zuul路由网关相关依赖 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zuul</artifactId>
        </dependency>
        <!-- actuator监控以及信息配置 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <!-- Hystrix断路器相关依赖 -->
        <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>
        <!-- 内嵌jetty容器 -->
        <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 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>

</project>

application.yaml

server:
  port: 9527

spring:
  application:
    name: microservicecloud-zuul-getway

eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
  instance:
    instance-id: getaway-9527.com
    prefer-ip-address: true

info:
  app.name: tomxwd-microservicecloud
  company.name: www.tomxwd.top
  build.artifactId: $project.artifactId$
  bulid.version: $project.version$

hosts修改
- 127.0.0.1 myzuul.com

主启动类Zuul_9527_StartSpringCloudApp，主要是加上@EnableZuulProxy注解

@SpringBootApplication
@EnableZuulProxy
public class Zuul_9527_StartSpringCloudApp {

    public static void main(String[] args) {
        SpringApplication.run(Zuul_9527_StartSpringCloudApp.class, args);
    }

}

启动
- Eureka集群启动
- microservicecloud-provider-dept-8001
- 一个路由Zuul
  - 可以到Eureka网址查看注册信息
测试
- 不用路由访问：http://localhost:8001/dept/get/2
- 启用路由访问：http://myzuul.com:9527/microservicecloud-dept/dept/get/2

Zuul路由访问映射规则

修改工程microservicecloud-zuul-gateway-9527

代理名称

application.yaml

修改部分：

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

完整内容：

server:
  port: 9527

spring:
  application:
    name: microservicecloud-zuul-getway

eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
  instance:
    instance-id: getaway-9527.com
    prefer-ip-address: true


info:
  app.name: tomxwd-microservicecloud
  company.name: www.tomxwd.top
  build.artifactId: $project.artifactId$
  bulid.version: $project.version$
zuul:
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**

修改之前我们访问的是http://myzuul.com:9527/microservicecloud-dept/dept/get/2，修改之后我们访问http://myzuul.com:9527/mydept/dept/get/2即可；

此时存在的问题
- 用原来真实的路径也可以访问得到服务

原真实服务名忽略
- application.yaml
  - 修改部分：
```
zuul:
	ignored-services: microservicecloud-dept
```
- 如果是单个，可以直接写应用名来进行ignored-services，多个可以用"*"
  - 修改部分：
```
zuul:
	ignored-services: "*"
```
设置统一公共前缀

所有的服务前面都要加上/tomxwd；
- application.yaml
  - 修改部分：
```
zuul:
	prefix: /tomxwd
```
- 这时候要访问 http://myzuul.com:9527/tomxwd/mydept/dept/get/2 才可以；

最后application.yaml文件修改

server:
  port: 9527

spring:
  application:
    name: microservicecloud-zuul-getway

eureka:
  client:
    service-url:
      defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
  instance:
    instance-id: getaway-9527.com
    prefer-ip-address: true


info:
  app.name: tomxwd-microservicecloud
  company.name: www.tomxwd.top
  build.artifactId: $project.artifactId$
  bulid.version: $project.version$
zuul:
  routes:
    mydept.serviceId: microservicecloud-dept
    mydept.path: /mydept/**
  ignored-services: "*"
  prefix: /tomxwd
#  ignored-services: microservicecloud-dept

目录CONTENT

09_SpringCloud_Zuul路由网关

09_SpringCloud_Zuul路由网关

Zuul概述

Zuul路由基本配置

Zuul路由访问映射规则

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