0.服务器上安装RabbitMQ组件

一.服务端

1.依赖

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-bus</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-stream-binder-rabbit</artifactId>
</dependency>

2.配置

#rabbitmq
spring.rabbitmq.host=127.0.0.1
#bus
management.endpoints.web.exposure.include=bus-refresh

二.客户端

1.依赖

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-bus</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-stream-binder-rabbit</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

2.配置
在application.properties配置文件中添加

#rabbitmq
spring.rabbitmq.host=127.0.0.1

三.测试

发送post
http://127.0.0.1:8002/actuator/bus-refresh

注意：
以上方式对于框架级别的配置能自由更新，但对于自定义配置@Value("${remoteconfig}")无法起作用
如果想要起作用要在Controller上加注解@RefreshScope