spring cloud bus与spring cloud config整合实现应用配置动态刷新

准备工作,

在码云上 创建 一个 项目，并在在目录下创建 spring_cloud_in_action/config-repo 层级目录，其中存储了应用名为shendu的多环境配置文件，配置文件中有一个from参数

部署好rabbitmq,可以参考 https://blog.csdn.net/super_rd?t=1

 

 

spring boot 版本是 1.5.14

 

eureka 注册中心

配置文件

server.port=1111 eureka.instance.hostname=localhost #由于该应用为注册中心，所有设置为false,代表不向注册中心注册自己 eureka.client.register-with-eureka=false #由于注册中心的职责就是维护服务实例，它并不需要去检索服务，所以也设置为false eureka.client.fetch-registry=false eureka.client.serviceUrl.defaultZone=http://${eureka.instance.hostname}:${server.port}/eureka/

启动类

package springcloud.eurekaserver;   import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;   @EnableEurekaServer // 注解启动一个服务注册中心 @SpringBootApplication public class EurekaServerApplication { public static void main(String[] args) { SpringApplication.run(EurekaServerApplication.class, args); } }

pom 依赖

org.springframework.cloud spring-cloud-starter-eureka-server   org.springframework.boot spring-boot-starter-test test

 

config server

配置文件

spring.application.name=config-server server.port=7001 spring.cloud.config.server.git.uri=https://gitee.com/shenduedu/spring_cloud_config_server/ # 配置仓库路径下的相对搜索位置，可以配置多个 spring.cloud.config.server.git.search-paths=spring_cloud_in_action/config-repo spring.cloud.config.server.git.username=shenduedu spring.cloud.config.server.git.password=a6615925 eureka.client.serviceUrl.defaultZone=http://localhost:1111/eureka/   management.security.enabled=false spring.rabbitmq.addresses=192.168.86.132 spring.rabbitmq.port=5672 spring.rabbitmq.username=springcloud spring.rabbitmq.password=springcloud

启动类

package springcloud.config_server_bus;   import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.config.server.EnableConfigServer;   @EnableDiscoveryClient @EnableConfigServer @SpringBootApplication public class ConfigServerBusApplication {   public static void main(String[] args) { SpringApplication.run(ConfigServerBusApplication.class, args); } }

pom 依赖

org.springframework.boot spring-boot-starter-actuator org.springframework.cloud spring-cloud-starter-bus-amqp org.springframework.cloud spring-cloud-config-server org.springframework.cloud spring-cloud-starter-eureka-server   org.springframework.boot spring-boot-starter-test test

 

 

config client

spring-boot-starter-actuator，spring-cloud-starter-bus-amqp 必须要加

 

创建 bootstrap.properties，并写出

spring.application.name=shendu spring.cloud.config.profile=dev spring.cloud.config.label=master #spring.cloud.config.uri=http://localhost:7001/ server.port=7002 eureka.client.serviceUrl.defaultZone=http://localhost:1111/eureka/ # 开启通过服务来访问config server的功能 spring.cloud.config.discovery.enabled=true # 指定注册的服务名 spring.cloud.config.discovery.service-id=config-server   management.security.enabled=false spring.rabbitmq.addresses=192.168.86.132 spring.rabbitmq.port=5672 spring.rabbitmq.username=springcloud spring.rabbitmq.password=springcloud

启动类

package springcloud.config_client_bus;   import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.builder.SpringApplicationBuilder; import org.springframework.cloud.client.discovery.EnableDiscoveryClient;   @EnableDiscoveryClient @SpringBootApplication public class ConfigClientBusApplication {   public static void main(String[] args) { new SpringApplicationBuilder(ConfigClientBusApplication.class).web(true).run(args); } }

controller

package springcloud.config_client_bus;   import org.springframework.beans.factory.annotation.Value; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;   @RefreshScope @RestController public class TestController { @Value("${from}") private String from;   @RequestMapping("/from") public String from(){ return this.from; }   }

pom 依赖

org.springframework.boot spring-boot-starter-actuator org.springframework.cloud spring-cloud-starter-bus-amqp org.springframework.cloud spring-cloud-starter-config org.springframework.cloud spring-cloud-starter-eureka   org.springframework.boot spring-boot-starter-test test

 

先返回 config_client的from请求，接着修改 dev配置文件的内容

，然后用postman 发送一个请求 到 config_server的 /bus/refresh/

这时再访问 config_client 的from 时已经更新了