springcloud配置config实现半自动刷新
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2022-07-03 19:48:27
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记录一下springcloud配置config利用bus半自动刷新时踩的坑
先创建一个configserver
工程目录 :
pom文件:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sun</groupId>
<artifactId>configserver</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>configserver</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<!--表示为web工程-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--暴露各种指标 貌似是必须的 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>
<!-- springcloud-bus依赖实现配置自动更新,rabbitmq -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
启动类要加入注解@EnableConfigServer
然后就是server内的yml配置
server:
port: 9090
spring:
application:
name: config-server
cloud: #config服务端,从git拉取数据
config:
server:
git:
uri: # 配置git仓库的地址
username: # git仓库的账号
password: # git仓库的密码
search-paths: mycloud #仓库内的文件名
label: master #仓库下配置文件搜索路径
rabbitmq: #半自动刷新需要用到的rabbitmq
host: localhost #ip
port: ${RABBIT_MQ_PORT:5672} #端口
username: admin
password: admin
management: #SpringCloud 2.0.0版本以后暴露接口方式(必须配置)
endpoints:
web:
exposure:
include: "*"
服务端基本配置完成,第二创建一个client
目录结构:
图片内用到的配置文件基本就是yml其他两个都是我测试用的
pom文件:
4.0.0
<groupId>com.sun</groupId>
<artifactId>configclient</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>configclient</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>
<dependencies>
<!--<!–实现刷新配置–>-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<!--<!–可以访问暴露的修改/刷新配置的接口–>-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bus-amqp</artifactId>
</dependency>
<!--暴露修改/刷新配置的接口-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
yml配置
server:
port: 9092
spring:
rabbitmq:
host: 129.211.131.80
port: 5672
username: admin
password: admin
application:
name: config-client #对应微服务配置文件名称
cloud:
config:
uri: http://localhost:9090/ #config server 端地址
profile: dev #项目配置文件选择
label: master
# discovery: #如果服务有注册到注册中心可以把这个注释放开,本人没有使用注册中心注册服务,所以写了注释
# enabled: true
# service-id: config-server #config-server服务名称
然后写一个controller进行测试
@Value("${myww}") 就是我在git配置文件上创建的一个参数值名字myww
‘
git上配置文件内的值如果要实现刷新必须加上@RefreshScope注解(我的git上配置了端口,所以clien启动的时候会自动把端口加入进来,程序启动完成以后的端口是7020)
项目基本搭建完成,然后启动config-serve启动完成以后再启动config-client
调用接口 http://localhost:7020/hi
返回结果:
然后再上git上面将参数修改
再执行一下刷新接口http://localhost:9090/actuator/bus-refresh 执行完成以后再调用http://localhost:7020/hi
返回结果就是git上面最新的参数了
springcloud的版本问题是一个很大的坑,版本不一样调用刷新的接口也不一样这个得查看版本文档,
我开始就是因为springcloud得版本原因导致调用刷新接口导致程序报错返回无订阅者,将版本改成Greenwich.SR1后就可以了
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