SpringCloud-Bus - 技术栈

一、介绍

（1）bus搭配config可以实现客户端配置自动刷新

（2）bus支持两种消息代理，rabbitmq和kafka

（3）使用topic模式分发消息

二、项目搭建（广播）

（1）客户端和服务配置中心pom.xml增加依赖

java 复制代码

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

（2）修改客户端的bootstrap.yml，添加rabbitmq配置、暴露actuator的refresh端点

java 复制代码

server:
  port: 3355

spring:
  application:
    name: cloud-config-client-service
  cloud:
    config:
      label: master #分支名
      name: application # - 号前缀
      profile: prod # - 号后缀
      uri: http://localhost:3344 #配置中心地址
  rabbitmq:
    host: 192.168.0.166
    port: 5672
    username: guest
    password: guest

eureka:
  client:
    #    客户端设置为true
    register-with-eureka: true
    #    客户端设置为true
    fetch-registry: true
    service-url:
      #      defaultZone: http://localhost:7001/eureka
      defaultZone: http://eureka1.com:7001/eureka, http://eureka2.com:7002/eureka
  instance:
    instance-id: configClient3355
    prefer-ip-address: true

management:
  endpoints:
    web:
      exposure:
        include: "*"

（3）修改配置中心服务端的bootstrap.yml，暴露actuator的bus-refresh端点

java 复制代码

server:
  port: 3344

spring:
  application:
    name: cloud-config-service
  cloud:
    config:
      server:
        git:
          uri: https://gitee.com/feifanwsh/config.git
      label: master
  rabbitmq:
    host: 192.168.0.166
    port: 5672
    username: guest
    password: guest

eureka:
  client:
    #    客户端设置为true
    register-with-eureka: true
    #    客户端设置为true
    fetch-registry: true
    service-url:
      #      defaultZone: http://localhost:7001/eureka
      defaultZone: http://eureka1.com:7001/eureka, http://eureka2.com:7002/eureka
  instance:
    instance-id: config3344
    prefer-ip-address: true

management:
  endpoints:
    web:
      exposure:
        include: "bus-refresh"

（4）运行

java 复制代码

curl -X POST "http://localhost:3344/actuator/bus-refresh"

三、单播

运行

java 复制代码

curl -X POST "http://localhost:3344/actuator/bus-refresh/服务名:端口号"