Spring Cloud Bus做配置更新步骤如下:
1.提交代码触发post给Server端发送bus/refresh
2.Server端接收到请求并发送给Spring Cloud Bus
3.Spring Cloud bus接到消息并通知给其它客户端
4.其它客户端接收到通知，请求Server端获取最新配置
5.全部客户端均获取到最新的配置
在server端的代码做一些改动，来支持/actuator/bus-refresh
（1）添加依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>
（2）application.yml
server:
port: 8097
spring:
application:
name: spring-cloud-config-server
cloud:
config:
server:
git:
uri: https://github.com/xxx/springcloud-config # git仓库的地址
# search-paths: # 仓库文件夹名称，多个以逗号分隔
username: #Git仓库用户名
password: #Git仓库密码
default-label: main
rabbitmq:
host: 127.0.0.1
port: 5672
username:
password:
management:
endpoints:
web:
exposure:
include: "*"
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka/
依次启动eureka，config-serve，config-client1，config-client2，修改git上的配置，访问curl -X POST http://localhost:8081/actuator/bus-refresh，可以看到两个客户端都能拿到修改后的值
