server:
  port: 8081
spring:
  profiles:
    active: dev
  application:
    # 服务名称
    name: test-server
  cloud:
    nacos:
      config:
        # nacos 配置中心
        server-addr: 127.0.0.1:8848
        group: DEV_GROUP
        prefix: test-nacos-config
        file-extension: yml

nacos 文件 test-server-dev.yml

[INFO ][2020-08-13 18:16:17.214][main][c.a.n.client.config.impl.LocalConfigInfoProcessor:195] -> LOCAL_SNAPSHOT_PATH:/Users/qcnuo/nacos/config
[INFO ][2020-08-13 18:16:17.240][main][com.alibaba.nacos.client.config.impl.Limiter:53] -> limitTime:5.0
[WARN ][2020-08-13 18:16:17.275][main][c.a.cloud.nacos.client.NacosPropertySourceBuilder:87] -> Ignore the empty nacos configuration and get it based on dataId[test-server] & group[DEFAULT_GROUP]
[WARN ][2020-08-13 18:16:17.280][main][c.a.cloud.nacos.client.NacosPropertySourceBuilder:87] -> Ignore the empty nacos configuration and get it based on dataId[test-server.yml] & group[DEFAULT_GROUP]
[WARN ][2020-08-13 18:16:17.283][main][c.a.cloud.nacos.client.NacosPropertySourceBuilder:87] -> Ignore the empty nacos configuration and get it based on dataId[test-server-dev.yml] & group[DEFAULT_GROUP]
[INFO ][2020-08-13 18:16:17.284][main][o.s.c.b.c.PropertySourceBootstrapConfiguration:105] -> Located property source: [BootstrapPropertySource {name='bootstrapProperties-test-server-dev.yml,DEFAULT_GROUP'}, BootstrapPropertySource {name='bootstrapProperties-test-server.yml,DEFAULT_GROUP'}, BootstrapPropertySource {name='bootstrapProperties-test-server,DEFAULT_GROUP'}]
[INFO ][2020-08-13 18:16:17.288][main][com.ntan.test.TestServiceApplication:655] -> The following profiles are active: dev
[WARN ][2020-08-13 18:16:18.050][main][o.springframework.boot.actuate.endpoint.EndpointId:155] -> Endpoint ID 'nacos-config' contains invalid characters, please migrate to a valid format.
[WARN ][2020-08-13 18:16:18.053][main][o.springframework.boot.actuate.endpoint.EndpointId:155] -> Endpoint ID 'nacos-discovery' contains invalid characters, please migrate to a valid format.
[WARN ][2020-08-13 18:16:18.291][main][o.springframework.boot.actuate.endpoint.EndpointId:155] -> Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.
[INFO ][2020-08-13 18:16:18.428][main][o.springframework.cloud.context.scope.GenericScope:295] -> BeanFactory id=32d4a495-473e-3dc9-8756-5abfb4d47938
[INFO ][2020-08-13 18:16:18.763][main][o.s.boot.web.embedded.tomcat.TomcatWebServer:92] -> Tomcat initialized with port(s): 8081 (http)
[INFO ][2020-08-13 18:16:18.772][main][org.apache.coyote.http11.Http11NioProtocol:173] -> Initializing ProtocolHandler ["http-nio-8081"]
[INFO ][2020-08-13 18:16:18.773][main][org.apache.catalina.core.StandardService:173] -> Starting service [Tomcat]
[INFO ][2020-08-13 18:16:18.773][main][org.apache.catalina.core.StandardEngine:173] -> Starting Servlet engine: [Apache Tomcat/9.0.31]
[INFO ][2020-08-13 18:16:18.922][main][o.a.c.core.ContainerBase.[Tomcat].[localhost].[/]:173] -> Initializing Spring embedded WebApplicationContext
[INFO ][2020-08-13 18:16:18.923][main][org.springframework.web.context.ContextLoader:284] -> Root WebApplicationContext: initialization completed in 1615 ms
[INFO ][2020-08-13 18:16:19.087][main][com.alibaba.nacos.client.naming:56] -> initializer namespace from System Property :null
[INFO ][2020-08-13 18:16:19.088][main][com.alibaba.nacos.client.naming:65] -> initializer namespace from System Environment :null
[INFO ][2020-08-13 18:16:19.089][main][com.alibaba.nacos.client.naming:75] -> initializer namespace from System Property :null
[WARN ][2020-08-13 18:16:19.298][main][o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext:558] -> Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'ntantest' in value "${ntantest}"
[INFO ][2020-08-13 18:16:19.301][main][org.apache.catalina.core.StandardService:173] -> Stopping service [Tomcat]
[WARN ][2020-08-13 18:16:19.305][main][org.apache.catalina.loader.WebappClassLoaderBase:173] -> The web application [ROOT] appears to have started a thread named [com.alibaba.nacos.naming.client.listener] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 sun.misc.Unsafe.park(Native Method)