Spring Cloud应用实现配置自动刷新过程详解
这篇文章主要介绍了SpringCloud应用实现配置自动刷新过程详解,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
通过springcloud的消息总线,将配置github等源代码仓库的变更通知到springcloud的所有组件。
spring-bus需要用到rabbitmq,所以需要提前准备rabbitmq消息队列环境
配置中心调整
1.配置中心配置引用pom
org.springframework.cloud spring-cloud-starter-bus-amqp org.springframework.cloud spring-cloud-config-monitor
2.配置中心配置
spring: application: name:spring-config cloud: config: server: git: uri:https://github.com/halouprogramer/spring-config-repository.git #username:*** #password:*** basedir:~/temp/gitlab rabbitmq:#增加rabbitmq的配置 host:192.168.114.129 port:5672 username:admin password:admin eureka: client: service-url: defaultZone:http://localhost:8761/eureka/ instance: prefer-ip-address:true server: port:3636 management: endpoints: web: exposure: include:"*"
业务微服务中需要做的修改
1.添加pom
org.springframework.cloud spring-cloud-starter-bus-amqp
2.配置文件
spring: application: name:spring-school cloud: config: discovery: enabled:true service-id:SPRING-CONFIG profile:dev bus:#busid不能使用默认,否则不能刷新 id:${spring.application.name}:${spring.cloud.config.profile}:${random.value} profiles: active:dev rabbitmq: host:192.168.114.129 port:5672 username:admin password:admin eureka: client: service-url: defaultZone:http://localhost:8761/eureka/ instance: prefer-ip-address:true #配置超时时间 feign: client: config: default: connectTimeout:5000 readTimeout:5000 #logger-level:bus
springcloudbus会使用busid去匹配应用,匹配上才会刷新配置
3.编写测试代码
packagecom.lvlvstart.spring.demo.school.service; importcom.lvlvstart.spring.demo.school.dao.SchoolRepository; importcom.lvlvstart.spring.demo.school.entity.School; importorg.springframework.beans.factory.annotation.Autowired; importorg.springframework.beans.factory.annotation.Value; importorg.springframework.cloud.context.config.annotation.RefreshScope; importorg.springframework.stereotype.Service; importjava.util.List; importjava.util.Optional; /** *@authorzishu.lv@baodanyun-inc.com *@description类描述 *@create2019/12/915:53 */ @Service @RefreshScope publicclassSchoolService{ @Value("${env}") privateStringenv; @Autowired privateSchoolRepositoryrepository; publicListfindAll(){ returnrepository.findAll(); } publicSchoolfindById(StringchoolId){ Optional school=repository.findById(choolId); if(school.isPresent()){ returnschool.get(); } returnnull; } publicStringgetEnv(){ returnenv; } }
packagecom.lvlvstart.spring.demo.school.web; importcom.lvlvstart.spring.demo.school.service.SchoolService; importorg.springframework.beans.factory.annotation.Autowired; importorg.springframework.beans.factory.annotation.Value; importorg.springframework.cloud.context.config.annotation.RefreshScope; importorg.springframework.web.bind.annotation.GetMapping; importorg.springframework.web.bind.annotation.RequestMapping; importorg.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("config-demo") publicclassConfigDemoController{ @Autowired privateSchoolServiceschoolService; @GetMapping("get-env") privateStringgetEnv(){ returnschoolService.getEnv(); } }
@RefreshScope标记上才会被刷新配置
@RefreshScope在Controller层使用,取不到值
利用githbuwebhook自动实现刷新配置:
PayloadURL需要添加configserver开放的monitor(monitor为spring自带地址),如果在内网,可以搜索内网穿透工具配置
修改仓库配置后,访问地址:http://localhost:8081/config-demo/get-env地址也会发生改变
完整代码访问:https://github.com/halouprogramer/spring-cloud-demo
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持毛票票。
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