nacos使用占位符${}进行参数配置的方法

system:
  mapApi:
    host: http://192.168.11.222:
    port: 7777
    header: Authorization
    timeout: 100000
  bigDataApi:
    host: http://192.168.11.222:
    port: 8888
    header: Authorization
    timeout: 200000

system:
  mapApi:
    host: http://192.168.11.222:
    port: 7777
    header: Authorization
    timeout: 100000
  bigDataApi:
    host: ${system.mapApi.host}
    port: 8888
    header: ${system.mapApi.header}
    timeout: 200000

<dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
      <version>${spring-cloud-starter.version}</version>
</dependency>
<dependency>
      <groupId>com.alibaba.cloud</groupId>
      <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
      <version>${spring-cloud-starter.version}</version>
</dependency>

spring:
  application:
    name: hm-user #需要与配置中心的文件前缀匹配
  profiles:
    active: dev #环境

spring:
  profiles: dev
  cloud:
    nacos:
      #配置中心设置
      config:
        username: nacos
        password: nacos
        #设置配置中心服务端地址
        server-addr: 127.0.0.1:8848
        namespace: hm-dev
        file-extension: yml
        #引用扩展配置
        extension-configs[0]:
          dataId: hm-client-info.yml #扩展配置的名字
          group: DEFAULT_GROUP #扩展配置的分组
          refresh: true #刷新

hm:
  redis:
    host: 127.0.0.1
    port: 6379
    database: 2
  mysql:
    url: jdbc:mysql://127.0.0.1:3306/jpa_test_db?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true
    username: root
    password: abc4561231

server:
  port: 8081
spring:
  datasource:
    url: ${hm.mysql.url}
    username: ${hm.mysql.username}
    password: ${hm.mysql.password}
    #驱动类
    driver-class-name: com.mysql.cj.jdbc.Driver 
  redis:
    host: ${hm.redis.host}
    port: ${hm.redis.port}
    database: ${hm.redis.database}
  cloud:
    sentinel:
      enabled: true
      transport:
        dashboard: 127.0.0.1:7777
user:
  name: ${hm.redis.host}——${hm.mysql.username}
  age: ${hm.redis.port}

@Component
@ConfigurationProperties("user")
public class NacosConfigConfiguration {
    public String name;
    public String age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }
}