一、安装并启动polaris
二、新建spring cloud项目并加入相应依赖

4.0.0com.tencentpolaris20221.0-SNAPSHOTorg.springframework.bootspring-boot-starter-parent2.6.10com.tencent.cloudspring-cloud-tencent-dependencies1.7.0-2021.0.3pomimportorg.springframework.cloudspring-cloud-dependencies2021.0.3pomimportorg.springframework.bootspring-boot-starter-webcom.tencent.cloudspring-cloud-starter-tencent-polaris-configorg.springframework.cloudspring-cloud-starter-bootstrap

三、在bootstrap.yml中配置polaris相关属性：

server:port: 48084
spring:application:name: ConfigExamplecloud:polaris:address: grpc://127.0.0.1:8091namespace: default # 设置配置中心命名空间config:auto-refresh: true # auto refresh when config file changedgroups:- name: ${spring.application.name} # group namefiles: [ "config/user.properties" ]

四，编写启动类：

package cn.edu.tju;import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
public class Start {public static void main(String[] args) {SpringApplication.run(Start.class, args);}
}

五、编写controller，要加上@RefreshScop注解，让配置能自动刷新

package cn.edu.tju.controller;import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RefreshScope
public class TestController {@Value("${name}")private String name;@GetMapping(value = "/name")public String name() {return name;}
}

六、去polaris控制台进行属性的配置：
创建配置分组 ConfigExample
创建配置文件 config/user.properties
修改user.properties的内容为：

name=amadeus2022

然后发布
七、启动spring cloud程序并访问：http://127.0.0.1:48084/name，
返回：amadeusliu2022
去polaris控制台修改name的值为amadeusliu2023
再次访问：http://127.0.0.1:48084/name
返回: amadeusliu2023