1、Git仓库添加文件

config-client.yml

# 选择要激活的环境
spring:
  profiles:
    active: dev

---
# 开发环境
server:
  port: 8201
spring:
  profiles: dev
  application:
    # 服务名称
    name: springcloud-config-dev

# 配置 Eureka
eureka:
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka/


---
# 测试环境
server:
  port: 8202
spring:
  profiles: test
  application:
    # 服务名称
    name: springcloud-config-test

# 配置 Eureka
eureka:
  client:
    service-url:
      defaultZone: http://localhost:7001/eureka/

2、新建 Config 客户端

springcloud-config-client-3355

1）导jar包

版本跟随父工程

config

<!-- spring-cloud-starter-config -->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-config</artifactId>
    <!--版本随父工程-->
    <!--<version>3.1.0</version>-->    
</dependency>

bootstrap

自 SpringCloud 2020 起，需要手工加上这个包；否则无法启动，会出现 No spring.config.import property has been defined 错误提示

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-bootstrap</artifactId>
</dependency>

web

如果缺少这个包，启动后会自动退出

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

2）配yml

bootstrap.yml

系统级别的配置

# 系统级别的配置
spring:
  cloud:
    config:
      # 需要通过ConfigServer从git上读取的资源文件名称，不要后缀
      name: config-client
      # 要读取的环境
      profile: dev
      # git 上的分支
      label: master
      # ConfigServer 访问地址
      uri: http://localhost:3344

application.yml

用户级别的配置

# 用户级别的配置
spring:
  application:
    name: springcloud-config-client

3）主启动类

@SpringBootApplication
public class ConfigClient_3355 {
    public static void main(String[] args) {
        SpringApplication.run(ConfigClient_3355.class,args);
    }
}

4）Controller

@Value("${xxx}") 获取配置文件中相应属性的值

@RestController
public class ConfigClientController {
    @Value("${spring.application.name}")
    private String appName;
    
    @Value("${server.port}")
    private String serverPort;
    
    @Value("${eureka.client.service-url.defaultZone}")
    private String eurekaUrl;

    @RequestMapping("/config")
    public String getConfig() {
        return "appName = " + appName
                + "，serverPort = " + serverPort
                + "，eurekaUrl = " + eurekaUrl;
    }
}