SpringCloud——消息总线Bus

news2024/12/29 11:47:19

SpringCloud Bus将分布式系统的节点与轻量级消息系统链接起来的框架，是对SpringCloud Config的加强，广播自动版的配置。
支持两种消息代理：RabbitMQ和Kafka

一、创建工程，添加依赖

spring-cloud-starter-config
spring-cloud-starter-netflix-eureka-client
spring-cloud-starter-actuator
spring-boot-devtools
spring-boot-starter-web

spring-cloud-starter-bus-amqp

二、配置文件

server:
	port: 3366

spring:
	application:
		name: config-client
	cloud:
		config:
			label: master # 分支名称
			name: config #配置文件名称
			profile: dev 
			uri: http://localhost:3344 #配置中心地址
rabbitmq:
	host: localhost
	port: 5672
	username: guest
	password: guest
	
eureka:
	client:
		service-url:
			defaultZone: http://localhost:7001/eureka

# 暴露监控端点
management:
	endpoints:
		web:
			exposure:
				include: "*"

三、启动类

@EnableEurekaClient
@SpringBootApplication
public class ConfigClientMain3366{
	public static void main(String[] args){
		SpringApplication.run(ConfigClientMain3366.class,args);
	}
}

四、controller类

@RestController
@RefreshScope
public class ConfigClientController{
	@Value("${server.port}")
	private String serverPort;

	@Value("${config.info}")
	private String configInfo;

	@GetMapping("/configInfo")
	public String configInfo(){
		return "serverPort: " + serverPort + "\t\n\n configInfo:" + configInfo;
	}
}

五、服务端添加消息总线的支持（配置中心模块）

spring-cloud-starter-bus-amqp 依赖

配置文件

server:
	port: 3344

spring:
	application:
		name: cloud-config-center
	cloud:
		config:
			server:
				git:
					uri: git@github.com:#github仓库名称
					search-paths: 
						- springcloud-config
					
			label: master

rabbitmq:
	host: localhost
	port: 5672
	username: guest
	password: guest

eureka:
	client:
		service-url:
			defaultZone: http://localhost:7001/eureka
#rabbitmq相关配置暴露bus刷新配置的端点
management:
	endpoints: 
		web:
			exposure:
				include: 'bus-refresh' #地址