消息总线SpringCloudBus

Posted 2020-11-27 Something Just Like This

在不重启微服务的情况

下更新配置如何来实现呢? 我们使用SpringCloudBus来实现配置的自动更新。

 

引入依赖 

<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>

配置文件 

 

   rabbitmq: 
       host: 127.0.0.1 
management: #暴露触发消息总线的地址 
     endpoints:
         web:
             exposure: 
                 include: bus‐refresh

 

客户端  

 引入依赖 

<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>

配置文件中配置rabbitmq

rabbitmq:
    host: 127.0.0.1

 

测试 

Url: http://127.0.0.1:8888/actuator/bus-refresh Method: post

 

自定义配置文件的读取  

@RefreshScope     //注解@RefreshScope 此注解用于刷新配置
@RestController 
public class TestController {

@Value("${sms.ip}") 
private String ip; 
@RequestMapping(value = "/ip", method = RequestMethod.GET) 
public String ip() {
 return ip; 
 }
}