Spring Cloud Alibaba 学习（4）- 客户端使用nacos config
程序员文章站
2022-07-15 08:57:55
...
首先参考博客
搭建SpringCloudAlibaba小项目：https://blog.csdn.net/m0_37607945/article/details/107705904
以下采用上面博客中的spring-cloud-alibaba-consumer项目进行讲解
在项目中引入依赖
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
nacos控制台配置
在控制台中选择 配置管理->配置列表->+
添加如下的配置信息
控制台里面数据不能有空格 比如user.age=25写成user.age = 25导致读取失败
添加配置（必须在bootstrap.properties中）
# DataId 默认使用 `spring.application.name` 配置跟文件扩展名结合(配置格式默认使用 properties), GROUP 不配置默认使用 DEFAULT_GROUP。因此该配置文件对应的 Nacos Config 配置的 DataId 为 nacos-config.properties, GROUP 为 DEFAULT_GROUP
spring.application.name=spring-cloud-alibaba-nacos-consumer
spring.cloud.nacos.config.server-addr=192.168.56.1:8848
结果验证
修改启动配置类main方法
public static void main(String[] args) {
ConfigurableApplicationContext applicationContext = SpringApplication.run(AlibabaConsumerApplication.class, args);
String userName = applicationContext.getEnvironment().getProperty("user.name");
String userAge = applicationContext.getEnvironment().getProperty("user.age");
System.err.println("user name :"+userName+"; age: "+userAge);
}
然后启动项目：
由此可见，从当前项目中可以读取到nacos控制台中添加的配置信息。
"C:\Program Files\Java\jdk1.8.0_121\bin\java.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\lib\idea_rt.jar=56491:D:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_121\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\rt.jar;D:\springcloud\spring-cloud-alibaba-consumer\target\classes;D:\maven\repo\org\springframework\boot\spring-boot-starter-web\2.1.8.RELEASE\spring-boot-starter-web-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter\2.1.8.RELEASE\spring-boot-starter-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot\2.1.8.RELEASE\spring-boot-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-autoconfigure\2.1.8.RELEASE\spring-boot-autoconfigure-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-logging\2.1.8.RELEASE\spring-boot-starter-logging-2.1.8.RELEASE.jar;D:\maven\repo\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;D:\maven\repo\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;D:\maven\repo\org\apache\logging\log4j\log4j-to-slf4j\2.11.2\log4j-to-slf4j-2.11.2.jar;D:\maven\repo\org\apache\logging\log4j\log4j-api\2.11.2\log4j-api-2.11.2.jar;D:\maven\repo\org\slf4j\jul-to-slf4j\1.7.28\jul-to-slf4j-1.7.28.jar;D:\maven\repo\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;D:\maven\repo\org\springframework\spring-core\5.1.9.RELEASE\spring-core-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-jcl\5.1.9.RELEASE\spring-jcl-5.1.9.RELEASE.jar;D:\maven\repo\org\yaml\snakeyaml\1.23\snakeyaml-1.23.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-json\2.1.8.RELEASE\spring-boot-starter-json-2.1.8.RELEASE.jar;D:\maven\repo\com\fasterxml\jackson\core\jackson-databind\2.9.9.3\jackson-databind-2.9.9.3.jar;D:\maven\repo\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;D:\maven\repo\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.9.9\jackson-datatype-jdk8-2.9.9.jar;D:\maven\repo\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.9.9\jackson-datatype-jsr310-2.9.9.jar;D:\maven\repo\com\fasterxml\jackson\module\jackson-module-parameter-names\2.9.9\jackson-module-parameter-names-2.9.9.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-tomcat\2.1.8.RELEASE\spring-boot-starter-tomcat-2.1.8.RELEASE.jar;D:\maven\repo\org\apache\tomcat\embed\tomcat-embed-core\9.0.24\tomcat-embed-core-9.0.24.jar;D:\maven\repo\org\apache\tomcat\embed\tomcat-embed-el\9.0.24\tomcat-embed-el-9.0.24.jar;D:\maven\repo\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.24\tomcat-embed-websocket-9.0.24.jar;D:\maven\repo\org\hibernate\validator\hibernate-validator\6.0.17.Final\hibernate-validator-6.0.17.Final.jar;D:\maven\repo\javax\validation\validation-api\2.0.1.Final\validation-api-2.0.1.Final.jar;D:\maven\repo\org\jboss\logging\jboss-logging\3.3.3.Final\jboss-logging-3.3.3.Final.jar;D:\maven\repo\com\fasterxml\classmate\1.4.0\classmate-1.4.0.jar;D:\maven\repo\org\springframework\spring-web\5.1.9.RELEASE\spring-web-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-beans\5.1.9.RELEASE\spring-beans-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-webmvc\5.1.9.RELEASE\spring-webmvc-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-aop\5.1.9.RELEASE\spring-aop-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-context\5.1.9.RELEASE\spring-context-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-expression\5.1.9.RELEASE\spring-expression-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-actuator\2.1.8.RELEASE\spring-boot-starter-actuator-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-actuator-autoconfigure\2.1.8.RELEASE\spring-boot-actuator-autoconfigure-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-actuator\2.1.8.RELEASE\spring-boot-actuator-2.1.8.RELEASE.jar;D:\maven\repo\io\micrometer\micrometer-core\1.1.6\micrometer-core-1.1.6.jar;D:\maven\repo\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;D:\maven\repo\org\latencyutils\LatencyUtils\2.0.3\LatencyUtils-2.0.3.jar;D:\maven\repo\com\alibaba\cloud\spring-cloud-starter-alibaba-nacos-discovery\2.1.2.RELEASE\spring-cloud-starter-alibaba-nacos-discovery-2.1.2.RELEASE.jar;D:\springcloud\nacos-1.2.1\client\target\classes;D:\springcloud\nacos-1.2.1\common\target\classes;D:\maven\repo\org\slf4j\slf4j-api\1.7.28\slf4j-api-1.7.28.jar;D:\maven\repo\commons-io\commons-io\2.2\commons-io-2.2.jar;D:\maven\repo\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar;D:\springcloud\nacos-1.2.1\api\target\classes;D:\maven\repo\com\alibaba\fastjson\1.2.58\fastjson-1.2.58.jar;D:\maven\repo\com\google\guava\guava\22.0\guava-22.0.jar;D:\maven\repo\com\google\code\findbugs\jsr305\1.3.9\jsr305-1.3.9.jar;D:\maven\repo\com\google\errorprone\error_prone_annotations\2.0.18\error_prone_annotations-2.0.18.jar;D:\maven\repo\com\google\j2objc\j2objc-annotations\1.1\j2objc-annotations-1.1.jar;D:\maven\repo\org\codehaus\mojo\animal-sniffer-annotations\1.14\animal-sniffer-annotations-1.14.jar;D:\maven\repo\commons-codec\commons-codec\1.11\commons-codec-1.11.jar;D:\maven\repo\com\fasterxml\jackson\core\jackson-core\2.9.9\jackson-core-2.9.9.jar;D:\maven\repo\io\prometheus\simpleclient\0.5.0\simpleclient-0.5.0.jar;D:\maven\repo\com\alibaba\spring\spring-context-support\1.0.6\spring-context-support-1.0.6.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-commons\2.1.5.RELEASE\spring-cloud-commons-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\security\spring-security-crypto\5.1.6.RELEASE\spring-security-crypto-5.1.6.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-context\2.1.5.RELEASE\spring-cloud-context-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-starter-netflix-ribbon\2.1.5.RELEASE\spring-cloud-starter-netflix-ribbon-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-starter\2.1.5.RELEASE\spring-cloud-starter-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\security\spring-security-rsa\1.0.9.RELEASE\spring-security-rsa-1.0.9.RELEASE.jar;D:\maven\repo\org\bouncycastle\bcpkix-jdk15on\1.64\bcpkix-jdk15on-1.64.jar;D:\maven\repo\org\bouncycastle\bcprov-jdk15on\1.64\bcprov-jdk15on-1.64.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-netflix-ribbon\2.1.5.RELEASE\spring-cloud-netflix-ribbon-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-netflix-archaius\2.1.5.RELEASE\spring-cloud-netflix-archaius-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-starter-netflix-archaius\2.1.5.RELEASE\spring-cloud-starter-netflix-archaius-2.1.5.RELEASE.jar;D:\maven\repo\com\netflix\archaius\archaius-core\0.7.6\archaius-core-0.7.6.jar;D:\maven\repo\commons-configuration\commons-configuration\1.8\commons-configuration-1.8.jar;D:\maven\repo\com\netflix\ribbon\ribbon\2.3.0\ribbon-2.3.0.jar;D:\maven\repo\com\netflix\ribbon\ribbon-transport\2.3.0\ribbon-transport-2.3.0.jar;D:\maven\repo\io\reactivex\rxnetty-contexts\0.4.9\rxnetty-contexts-0.4.9.jar;D:\maven\repo\io\reactivex\rxnetty-servo\0.4.9\rxnetty-servo-0.4.9.jar;D:\maven\repo\com\netflix\hystrix\hystrix-core\1.5.18\hystrix-core-1.5.18.jar;D:\maven\repo\javax\inject\javax.inject\1\javax.inject-1.jar;D:\maven\repo\io\reactivex\rxnetty\0.4.9\rxnetty-0.4.9.jar;D:\maven\repo\com\netflix\ribbon\ribbon-core\2.3.0\ribbon-core-2.3.0.jar;D:\maven\repo\commons-lang\commons-lang\2.6\commons-lang-2.6.jar;D:\maven\repo\com\netflix\ribbon\ribbon-httpclient\2.3.0\ribbon-httpclient-2.3.0.jar;D:\maven\repo\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;D:\maven\repo\org\apache\httpcomponents\httpclient\4.5.9\httpclient-4.5.9.jar;D:\maven\repo\org\apache\httpcomponents\httpcore\4.4.12\httpcore-4.4.12.jar;D:\maven\repo\com\sun\jersey\jersey-client\1.19.1\jersey-client-1.19.1.jar;D:\maven\repo\com\sun\jersey\jersey-core\1.19.1\jersey-core-1.19.1.jar;D:\maven\repo\javax\ws\rs\jsr311-api\1.1.1\jsr311-api-1.1.1.jar;D:\maven\repo\com\sun\jersey\contribs\jersey-apache-client4\1.19.1\jersey-apache-client4-1.19.1.jar;D:\maven\repo\com\netflix\servo\servo-core\0.12.21\servo-core-0.12.21.jar;D:\maven\repo\com\netflix\netflix-commons\netflix-commons-util\0.3.0\netflix-commons-util-0.3.0.jar;D:\maven\repo\com\netflix\ribbon\ribbon-loadbalancer\2.3.0\ribbon-loadbalancer-2.3.0.jar;D:\maven\repo\com\netflix\netflix-commons\netflix-statistics\0.1.1\netflix-statistics-0.1.1.jar;D:\maven\repo\io\reactivex\rxjava\1.3.8\rxjava-1.3.8.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter\5.5.2\junit-jupiter-5.5.2.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter-api\5.3.2\junit-jupiter-api-5.3.2.jar;D:\maven\repo\org\apiguardian\apiguardian-api\1.0.0\apiguardian-api-1.0.0.jar;D:\maven\repo\org\opentest4j\opentest4j\1.1.1\opentest4j-1.1.1.jar;D:\maven\repo\org\junit\platform\junit-platform-commons\1.3.2\junit-platform-commons-1.3.2.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter-params\5.3.2\junit-jupiter-params-5.3.2.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter-engine\5.3.2\junit-jupiter-engine-5.3.2.jar;D:\maven\repo\org\junit\platform\junit-platform-engine\1.3.2\junit-platform-engine-1.3.2.jar;D:\maven\repo\org\mockito\mockito-junit-jupiter\2.23.4\mockito-junit-jupiter-2.23.4.jar;D:\maven\repo\org\mockito\mockito-core\2.23.4\mockito-core-2.23.4.jar;D:\maven\repo\net\bytebuddy\byte-buddy\1.9.16\byte-buddy-1.9.16.jar;D:\maven\repo\net\bytebuddy\byte-buddy-agent\1.9.16\byte-buddy-agent-1.9.16.jar;D:\maven\repo\org\objenesis\objenesis\2.6\objenesis-2.6.jar;D:\maven\repo\com\alibaba\cloud\spring-cloud-starter-alibaba-nacos-config\2.1.2.RELEASE\spring-cloud-starter-alibaba-nacos-config-2.1.2.RELEASE.jar" com.alibaba.nacos.example.AlibabaConsumerApplication
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.8.RELEASE)
2020-08-03 10:08:33.009 INFO 7320 --- [ main] c.a.n.c.c.impl.LocalConfigInfoProcessor : LOCAL_SNAPSHOT_PATH:C:\Users\Administrator\nacos\config
2020-08-03 10:08:33.043 INFO 7320 --- [ main] c.a.nacos.client.config.impl.Limiter : limitTime:5.0
2020-08-03 10:08:33.130 WARN 7320 --- [ main] c.a.c.n.c.NacosPropertySourceBuilder : Ignore the empty nacos configuration and get it based on dataId[spring-cloud-alibaba-nacos-consumer] & group[DEFAULT_GROUP]
2020-08-03 10:08:33.174 INFO 7320 --- [ main] c.a.nacos.client.config.utils.JVMUtil : isMultiInstance:false
2020-08-03 10:08:33.180 INFO 7320 --- [ main] b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource {name='bootstrapProperties-spring-cloud-alibaba-nacos-consumer.properties,DEFAULT_GROUP'}, BootstrapPropertySource {name='bootstrapProperties-spring-cloud-alibaba-nacos-consumer,DEFAULT_GROUP'}]
2020-08-03 10:08:33.184 INFO 7320 --- [ main] c.a.n.e.AlibabaConsumerApplication : No active profile set, falling back to default profiles: default
2020-08-03 10:08:33.790 WARN 7320 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'nacos-config' contains invalid characters, please migrate to a valid format.
2020-08-03 10:08:33.795 WARN 7320 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'nacos-discovery' contains invalid characters, please migrate to a valid format.
2020-08-03 10:08:34.026 WARN 7320 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.
2020-08-03 10:08:34.193 INFO 7320 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=f42d18b7-4399-3a81-98f8-430b8098994d
2020-08-03 10:08:34.525 INFO 7320 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 7083 (http)
2020-08-03 10:08:34.558 INFO 7320 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-08-03 10:08:34.559 INFO 7320 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.24]
2020-08-03 10:08:34.717 INFO 7320 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-08-03 10:08:34.718 INFO 7320 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1519 ms
2020-08-03 10:08:35.586 INFO 7320 --- [ main] com.alibaba.nacos.client.naming : initializer namespace from System Property :null
2020-08-03 10:08:35.587 INFO 7320 --- [ main] com.alibaba.nacos.client.naming : initializer namespace from System Environment :null
2020-08-03 10:08:35.588 INFO 7320 --- [ main] com.alibaba.nacos.client.naming : initializer namespace from System Property :null
2020-08-03 10:08:35.962 WARN 7320 --- [ main] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2020-08-03 10:08:35.962 INFO 7320 --- [ main] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-08-03 10:08:35.967 WARN 7320 --- [ main] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2020-08-03 10:08:35.968 INFO 7320 --- [ main] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-08-03 10:08:36.143 INFO 7320 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-08-03 10:08:36.273 INFO 7320 --- [ main] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 'Nacso-Watch-Task-Scheduler'
2020-08-03 10:08:37.192 INFO 7320 --- [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 21 endpoint(s) beneath base path '/actuator'
2020-08-03 10:08:37.331 INFO 7320 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 7083 (http) with context path ''
2020-08-03 10:08:37.336 INFO 7320 --- [ main] com.alibaba.nacos.client.naming : [BEAT] adding beat: {"cluster":"cosumer-group","ip":"192.168.56.1","metadata":{"preserved.register.source":"SPRING_CLOUD","consumerkey2":"consumervalue2","consumerkey1":"consumervalue1"},"period":5000,"port":7083,"scheduled":false,"serviceName":"aaa@qq.com@spring-cloud-alibaba-nacos-consumer","stopped":false,"weight":20.0} to beat map.
2020-08-03 10:08:37.435 INFO 7320 --- [ main] com.alibaba.nacos.client.naming : [REGISTER-SERVICE] public registering service aaa@qq.com@spring-cloud-alibaba-nacos-consumer with instance: {"clusterName":"cosumer-group","enabled":true,"ephemeral":true,"healthy":true,"instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ip":"192.168.56.1","ipDeleteTimeout":30000,"metadata":{"preserved.register.source":"SPRING_CLOUD","consumerkey2":"consumervalue2","consumerkey1":"consumervalue1"},"port":7083,"weight":20.0}
2020-08-03 10:08:37.445 INFO 7320 --- [ main] c.a.c.n.registry.NacosServiceRegistry : nacos registry, DEFAULT_GROUP spring-cloud-alibaba-nacos-consumer 192.168.56.1:7083 register finished
2020-08-03 10:08:38.008 INFO 7320 --- [ main] c.a.n.e.AlibabaConsumerApplication : Started AlibabaConsumerApplication in 8.098 seconds (JVM running for 9.567)
2020-08-03 10:08:38.022 INFO 7320 --- [ main] c.a.n.client.config.impl.ClientWorker : [fixed-192.168.56.1_8848] [subscribe] spring-cloud-alibaba-nacos-consumer.properties+DEFAULT_GROUP
2020-08-03 10:08:38.024 INFO 7320 --- [ main] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [add-listener] ok, tenant=, dataId=spring-cloud-alibaba-nacos-consumer.properties, group=DEFAULT_GROUP, cnt=1
2020-08-03 10:08:38.024 INFO 7320 --- [ main] c.a.n.client.config.impl.ClientWorker : [fixed-192.168.56.1_8848] [subscribe] spring-cloud-alibaba-nacos-consumer+DEFAULT_GROUP
2020-08-03 10:08:38.024 INFO 7320 --- [ main] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [add-listener] ok, tenant=, dataId=spring-cloud-alibaba-nacos-consumer, group=DEFAULT_GROUP, cnt=1
user name :spring-cloud-alibaba-nacos-consumer; age: 18
2020-08-03 10:08:38.079 INFO 7320 --- [2.168.56.1_8848] c.a.n.client.config.impl.ClientWorker : get changedGroupKeys:[]
2020-08-03 10:08:39.017 INFO 7320 --- [-169.254.10.142] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-08-03 10:08:39.017 INFO 7320 --- [-169.254.10.142] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2020-08-03 10:08:39.042 INFO 7320 --- [-169.254.10.142] o.s.web.servlet.DispatcherServlet : Completed initialization in 25 ms
Endpoint访问
Nacos Config 内部提供了一个 Endpoint, 对应的 endpoint id 为 nacos-config。
Endpoint 暴露的 json 中包含了三种属性:
- Sources: 当前应用配置的数据信息
- RefreshHistory: 配置刷新的历史记录
- NacosConfigProperties: 当前应用 Nacos 的基础配置信息
访问地址： http://localhost:7083/actuator/nacos-config
{
"NacosConfigProperties": {
"serverAddr": "192.168.56.1:8848",
"username": "",
"password": "",
"encode": null,
"group": "DEFAULT_GROUP",
"prefix": null,
"fileExtension": "properties",
"timeout": 3000,
"maxRetry": null,
"configLongPollTimeout": null,
"configRetryTime": null,
"enableRemoteSyncConfig": false,
"endpoint": null,
"namespace": null,
"accessKey": null,
"secretKey": null,
"contextPath": null,
"clusterName": null,
"name": null,
"sharedConfigs": null,
"extensionConfigs": null,
"refreshEnabled": true,
"sharedDataids": null,
"extConfig": null,
"refreshableDataids": null,
"configServiceProperties": {
"secretKey": "",
"namespace": "",
"username": "",
"enableRemoteSyncConfig": "false",
"configLongPollTimeout": "",
"configRetryTime": "",
"encode": "",
"serverAddr": "192.168.56.1:8848",
"maxRetry": "",
"clusterName": "",
"password": "",
"accessKey": "",
"endpoint": ""
}
},
"RefreshHistory": [
{
"timestamp": "2020-08-03 12:35:30",
"dataId": "spring-cloud-alibaba-nacos-consumer.properties",
"group": "DEFAULT_GROUP",
"md5": "96683d34e786b438b008cfd576263fd7"
}
],
"Sources": [
{
"lastSynced": "2020-08-03 12:32:28",
"dataId": "spring-cloud-alibaba-nacos-consumer.properties"
},
{
"lastSynced": "2020-08-03 12:32:28",
"dataId": "spring-cloud-alibaba-nacos-consumer"
}
]
}
使用其他格式
- 在nacos控制台新增配置
- 修改bootstrap.properties配置文件
# DataId 默认使用 `spring.application.name` 配置跟文件扩展名结合(配置格式默认使用 properties), GROUP 不配置默认使用 DEFAULT_GROUP。因此该配置文件对应的 Nacos Config 配置的 DataId 为 nacos-config.properties, GROUP 为 DEFAULT_GROUP
spring.application.name=spring-cloud-alibaba-nacos-consumer
spring.cloud.nacos.config.server-addr=192.168.56.1:8848
# 默认为properties 如果采用其他格式 必须进行配置
spring.cloud.nacos.config.file-extension=yaml
- 重新启动项目
支持配置的自动更新
修改main方法如下：
public static void main(String[] args) throws InterruptedException {
ConfigurableApplicationContext applicationContext = SpringApplication.run(AlibabaConsumerApplication.class, args);
while(true) {
//当动态配置刷新时，会更新到 Enviroment中，因此这里每隔一秒中从Enviroment中获取配置
String userName = applicationContext.getEnvironment().getProperty("user.name");
String userAge = applicationContext.getEnvironment().getProperty("user.age");
System.err.println("user name :" + userName + "; age: " + userAge);
TimeUnit.SECONDS.sleep(1);
}
}
从consul控制台修改配置user.age为20
这是可以从控制台看出属性已经动态刷新了
user name :spring-cloud-alibaba-nacos-consumer.yaml; age: 19
2020-08-03 10:45:15.145 INFO 11824 --- [2.168.56.1_8848] c.a.n.client.config.impl.ClientWorker : [fixed-192.168.56.1_8848] [polling-resp] config changed. dataId=spring-cloud-alibaba-nacos-consumer.yaml, group=DEFAULT_GROUP
2020-08-03 10:45:15.145 INFO 11824 --- [2.168.56.1_8848] c.a.n.client.config.impl.ClientWorker : get changedGroupKeys:[spring-cloud-alibaba-nacos-consumer.yaml+DEFAULT_GROUP]
2020-08-03 10:45:15.157 INFO 11824 --- [2.168.56.1_8848] c.a.n.client.config.impl.ClientWorker : [fixed-192.168.56.1_8848] [data-received] dataId=spring-cloud-alibaba-nacos-consumer.yaml, group=DEFAULT_GROUP, tenant=null, md5=2686fcfa497a8fd06411571b3a7ce096, content=user.name: spring-cloud-alibaba-nacos-consumer.yaml
user.age: 20, type=yaml
2020-08-03 10:45:15.158 INFO 11824 --- [2.168.56.1_8848] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [notify-context] dataId=spring-cloud-alibaba-nacos-consumer.yaml, group=DEFAULT_GROUP, md5=2686fcfa497a8fd06411571b3a7ce096
user name :spring-cloud-alibaba-nacos-consumer.yaml; age: 19
user name :spring-cloud-alibaba-nacos-consumer.yaml; age: 19
2020-08-03 10:45:17.146 WARN 11824 --- [2.168.56.1_8848] c.a.c.n.c.NacosPropertySourceBuilder : Ignore the empty nacos configuration and get it based on dataId[spring-cloud-alibaba-nacos-consumer] & group[DEFAULT_GROUP]
2020-08-03 10:45:17.153 INFO 11824 --- [2.168.56.1_8848] b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource {name='bootstrapProperties-spring-cloud-alibaba-nacos-consumer.yaml,DEFAULT_GROUP'}, BootstrapPropertySource {name='bootstrapProperties-spring-cloud-alibaba-nacos-consumer,DEFAULT_GROUP'}]
2020-08-03 10:45:17.155 INFO 11824 --- [2.168.56.1_8848] o.s.boot.SpringApplication : No active profile set, falling back to default profiles: default
2020-08-03 10:45:17.173 INFO 11824 --- [2.168.56.1_8848] o.s.boot.SpringApplication : Started application in 2.009 seconds (JVM running for 41.089)
2020-08-03 10:45:17.303 INFO 11824 --- [2.168.56.1_8848] o.s.c.e.event.RefreshEventListener : Refresh keys changed: [user.age]
2020-08-03 10:45:17.304 INFO 11824 --- [2.168.56.1_8848] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [notify-ok] dataId=spring-cloud-alibaba-nacos-consumer.yaml, group=DEFAULT_GROUP, md5=2686fcfa497a8fd06411571b3a7ce096, laaa@qq.com68df8db1
2020-08-03 10:45:17.304 INFO 11824 --- [2.168.56.1_8848] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [notify-listener] time cost=2146ms in ClientWorker, dataId=spring-cloud-alibaba-nacos-consumer.yaml, group=DEFAULT_GROUP, md5=2686fcfa497a8fd06411571b3a7ce096, laaa@qq.com68df8db1
user name :spring-cloud-alibaba-nacos-consumer.yaml; age: 20
user name :spring-cloud-alibaba-nacos-consumer.yaml; age: 20
user name :spring-cloud-alibaba-nacos-consumer.yaml; age: 20
关闭动态刷新功能（默认开启，不建议关闭）
# 关闭刷新功能
spring.cloud.nacos.config.refresh.enabled=false
支持更细粒度的配置（profile）
首先修改项目中的默认**版本（bootstrap.properties）
spring.profiles.active=develop
${spring.profiles.active} 当通过配置文件来指定时必须放在 bootstrap.properties 文件中。
此时的DataId的格式为 ${spring.application.name}-${profile}.${file-extension:properties}
克隆一份配置为spring-cloud-alibaba-nacos-consumer-develop.yaml，然后再进行编辑
user.name: spring-cloud-alibaba-nacos-consumer-develop.yaml
user.age: 23
current.env: develop-env
修改启动类的main方法如下
public static void main(String[] args) throws InterruptedException {
ConfigurableApplicationContext applicationContext = SpringApplication.run(AlibabaConsumerApplication.class, args);
while(true) {
//当动态配置刷新时，会更新到 Enviroment中，因此这里每隔一秒中从Enviroment中获取配置
String userName = applicationContext.getEnvironment().getProperty("user.name");
String userAge = applicationContext.getEnvironment().getProperty("user.age");
//获取当前部署的环境
String currentEnv = applicationContext.getEnvironment().getProperty("current.env");
System.err.println("in "+currentEnv+" enviroment; "+"user name :" + userName + "; age: " + userAge);
TimeUnit.SECONDS.sleep(10);
}
}
"C:\Program Files\Java\jdk1.8.0_121\bin\java.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:D:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\lib\idea_rt.jar=60443:D:\Program Files\JetBrains\IntelliJ IDEA 2019.3.1\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_121\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\rt.jar;D:\springcloud\spring-cloud-alibaba-consumer\target\classes;D:\maven\repo\org\springframework\boot\spring-boot-starter-web\2.1.8.RELEASE\spring-boot-starter-web-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter\2.1.8.RELEASE\spring-boot-starter-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot\2.1.8.RELEASE\spring-boot-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-autoconfigure\2.1.8.RELEASE\spring-boot-autoconfigure-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-logging\2.1.8.RELEASE\spring-boot-starter-logging-2.1.8.RELEASE.jar;D:\maven\repo\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;D:\maven\repo\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;D:\maven\repo\org\apache\logging\log4j\log4j-to-slf4j\2.11.2\log4j-to-slf4j-2.11.2.jar;D:\maven\repo\org\apache\logging\log4j\log4j-api\2.11.2\log4j-api-2.11.2.jar;D:\maven\repo\org\slf4j\jul-to-slf4j\1.7.28\jul-to-slf4j-1.7.28.jar;D:\maven\repo\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;D:\maven\repo\org\springframework\spring-core\5.1.9.RELEASE\spring-core-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-jcl\5.1.9.RELEASE\spring-jcl-5.1.9.RELEASE.jar;D:\maven\repo\org\yaml\snakeyaml\1.23\snakeyaml-1.23.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-json\2.1.8.RELEASE\spring-boot-starter-json-2.1.8.RELEASE.jar;D:\maven\repo\com\fasterxml\jackson\core\jackson-databind\2.9.9.3\jackson-databind-2.9.9.3.jar;D:\maven\repo\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;D:\maven\repo\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.9.9\jackson-datatype-jdk8-2.9.9.jar;D:\maven\repo\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.9.9\jackson-datatype-jsr310-2.9.9.jar;D:\maven\repo\com\fasterxml\jackson\module\jackson-module-parameter-names\2.9.9\jackson-module-parameter-names-2.9.9.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-tomcat\2.1.8.RELEASE\spring-boot-starter-tomcat-2.1.8.RELEASE.jar;D:\maven\repo\org\apache\tomcat\embed\tomcat-embed-core\9.0.24\tomcat-embed-core-9.0.24.jar;D:\maven\repo\org\apache\tomcat\embed\tomcat-embed-el\9.0.24\tomcat-embed-el-9.0.24.jar;D:\maven\repo\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.24\tomcat-embed-websocket-9.0.24.jar;D:\maven\repo\org\hibernate\validator\hibernate-validator\6.0.17.Final\hibernate-validator-6.0.17.Final.jar;D:\maven\repo\javax\validation\validation-api\2.0.1.Final\validation-api-2.0.1.Final.jar;D:\maven\repo\org\jboss\logging\jboss-logging\3.3.3.Final\jboss-logging-3.3.3.Final.jar;D:\maven\repo\com\fasterxml\classmate\1.4.0\classmate-1.4.0.jar;D:\maven\repo\org\springframework\spring-web\5.1.9.RELEASE\spring-web-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-beans\5.1.9.RELEASE\spring-beans-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-webmvc\5.1.9.RELEASE\spring-webmvc-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-aop\5.1.9.RELEASE\spring-aop-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-context\5.1.9.RELEASE\spring-context-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\spring-expression\5.1.9.RELEASE\spring-expression-5.1.9.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-starter-actuator\2.1.8.RELEASE\spring-boot-starter-actuator-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-actuator-autoconfigure\2.1.8.RELEASE\spring-boot-actuator-autoconfigure-2.1.8.RELEASE.jar;D:\maven\repo\org\springframework\boot\spring-boot-actuator\2.1.8.RELEASE\spring-boot-actuator-2.1.8.RELEASE.jar;D:\maven\repo\io\micrometer\micrometer-core\1.1.6\micrometer-core-1.1.6.jar;D:\maven\repo\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;D:\maven\repo\org\latencyutils\LatencyUtils\2.0.3\LatencyUtils-2.0.3.jar;D:\maven\repo\com\alibaba\cloud\spring-cloud-starter-alibaba-nacos-discovery\2.1.2.RELEASE\spring-cloud-starter-alibaba-nacos-discovery-2.1.2.RELEASE.jar;D:\springcloud\nacos-1.2.1\client\target\classes;D:\springcloud\nacos-1.2.1\common\target\classes;D:\maven\repo\org\slf4j\slf4j-api\1.7.28\slf4j-api-1.7.28.jar;D:\maven\repo\commons-io\commons-io\2.2\commons-io-2.2.jar;D:\maven\repo\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar;D:\springcloud\nacos-1.2.1\api\target\classes;D:\maven\repo\com\alibaba\fastjson\1.2.58\fastjson-1.2.58.jar;D:\maven\repo\com\google\guava\guava\22.0\guava-22.0.jar;D:\maven\repo\com\google\code\findbugs\jsr305\1.3.9\jsr305-1.3.9.jar;D:\maven\repo\com\google\errorprone\error_prone_annotations\2.0.18\error_prone_annotations-2.0.18.jar;D:\maven\repo\com\google\j2objc\j2objc-annotations\1.1\j2objc-annotations-1.1.jar;D:\maven\repo\org\codehaus\mojo\animal-sniffer-annotations\1.14\animal-sniffer-annotations-1.14.jar;D:\maven\repo\commons-codec\commons-codec\1.11\commons-codec-1.11.jar;D:\maven\repo\com\fasterxml\jackson\core\jackson-core\2.9.9\jackson-core-2.9.9.jar;D:\maven\repo\io\prometheus\simpleclient\0.5.0\simpleclient-0.5.0.jar;D:\maven\repo\com\alibaba\spring\spring-context-support\1.0.6\spring-context-support-1.0.6.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-commons\2.1.5.RELEASE\spring-cloud-commons-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\security\spring-security-crypto\5.1.6.RELEASE\spring-security-crypto-5.1.6.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-context\2.1.5.RELEASE\spring-cloud-context-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-starter-netflix-ribbon\2.1.5.RELEASE\spring-cloud-starter-netflix-ribbon-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-starter\2.1.5.RELEASE\spring-cloud-starter-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\security\spring-security-rsa\1.0.9.RELEASE\spring-security-rsa-1.0.9.RELEASE.jar;D:\maven\repo\org\bouncycastle\bcpkix-jdk15on\1.64\bcpkix-jdk15on-1.64.jar;D:\maven\repo\org\bouncycastle\bcprov-jdk15on\1.64\bcprov-jdk15on-1.64.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-netflix-ribbon\2.1.5.RELEASE\spring-cloud-netflix-ribbon-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-netflix-archaius\2.1.5.RELEASE\spring-cloud-netflix-archaius-2.1.5.RELEASE.jar;D:\maven\repo\org\springframework\cloud\spring-cloud-starter-netflix-archaius\2.1.5.RELEASE\spring-cloud-starter-netflix-archaius-2.1.5.RELEASE.jar;D:\maven\repo\com\netflix\archaius\archaius-core\0.7.6\archaius-core-0.7.6.jar;D:\maven\repo\commons-configuration\commons-configuration\1.8\commons-configuration-1.8.jar;D:\maven\repo\com\netflix\ribbon\ribbon\2.3.0\ribbon-2.3.0.jar;D:\maven\repo\com\netflix\ribbon\ribbon-transport\2.3.0\ribbon-transport-2.3.0.jar;D:\maven\repo\io\reactivex\rxnetty-contexts\0.4.9\rxnetty-contexts-0.4.9.jar;D:\maven\repo\io\reactivex\rxnetty-servo\0.4.9\rxnetty-servo-0.4.9.jar;D:\maven\repo\com\netflix\hystrix\hystrix-core\1.5.18\hystrix-core-1.5.18.jar;D:\maven\repo\javax\inject\javax.inject\1\javax.inject-1.jar;D:\maven\repo\io\reactivex\rxnetty\0.4.9\rxnetty-0.4.9.jar;D:\maven\repo\com\netflix\ribbon\ribbon-core\2.3.0\ribbon-core-2.3.0.jar;D:\maven\repo\commons-lang\commons-lang\2.6\commons-lang-2.6.jar;D:\maven\repo\com\netflix\ribbon\ribbon-httpclient\2.3.0\ribbon-httpclient-2.3.0.jar;D:\maven\repo\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;D:\maven\repo\org\apache\httpcomponents\httpclient\4.5.9\httpclient-4.5.9.jar;D:\maven\repo\org\apache\httpcomponents\httpcore\4.4.12\httpcore-4.4.12.jar;D:\maven\repo\com\sun\jersey\jersey-client\1.19.1\jersey-client-1.19.1.jar;D:\maven\repo\com\sun\jersey\jersey-core\1.19.1\jersey-core-1.19.1.jar;D:\maven\repo\javax\ws\rs\jsr311-api\1.1.1\jsr311-api-1.1.1.jar;D:\maven\repo\com\sun\jersey\contribs\jersey-apache-client4\1.19.1\jersey-apache-client4-1.19.1.jar;D:\maven\repo\com\netflix\servo\servo-core\0.12.21\servo-core-0.12.21.jar;D:\maven\repo\com\netflix\netflix-commons\netflix-commons-util\0.3.0\netflix-commons-util-0.3.0.jar;D:\maven\repo\com\netflix\ribbon\ribbon-loadbalancer\2.3.0\ribbon-loadbalancer-2.3.0.jar;D:\maven\repo\com\netflix\netflix-commons\netflix-statistics\0.1.1\netflix-statistics-0.1.1.jar;D:\maven\repo\io\reactivex\rxjava\1.3.8\rxjava-1.3.8.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter\5.5.2\junit-jupiter-5.5.2.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter-api\5.3.2\junit-jupiter-api-5.3.2.jar;D:\maven\repo\org\apiguardian\apiguardian-api\1.0.0\apiguardian-api-1.0.0.jar;D:\maven\repo\org\opentest4j\opentest4j\1.1.1\opentest4j-1.1.1.jar;D:\maven\repo\org\junit\platform\junit-platform-commons\1.3.2\junit-platform-commons-1.3.2.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter-params\5.3.2\junit-jupiter-params-5.3.2.jar;D:\maven\repo\org\junit\jupiter\junit-jupiter-engine\5.3.2\junit-jupiter-engine-5.3.2.jar;D:\maven\repo\org\junit\platform\junit-platform-engine\1.3.2\junit-platform-engine-1.3.2.jar;D:\maven\repo\org\mockito\mockito-junit-jupiter\2.23.4\mockito-junit-jupiter-2.23.4.jar;D:\maven\repo\org\mockito\mockito-core\2.23.4\mockito-core-2.23.4.jar;D:\maven\repo\net\bytebuddy\byte-buddy\1.9.16\byte-buddy-1.9.16.jar;D:\maven\repo\net\bytebuddy\byte-buddy-agent\1.9.16\byte-buddy-agent-1.9.16.jar;D:\maven\repo\org\objenesis\objenesis\2.6\objenesis-2.6.jar;D:\maven\repo\com\alibaba\cloud\spring-cloud-starter-alibaba-nacos-config\2.1.2.RELEASE\spring-cloud-starter-alibaba-nacos-config-2.1.2.RELEASE.jar" com.alibaba.nacos.example.AlibabaConsumerApplication
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.8.RELEASE)
2020-08-03 11:01:22.278 INFO 10624 --- [ main] c.a.n.c.c.impl.LocalConfigInfoProcessor : LOCAL_SNAPSHOT_PATH:C:\Users\Administrator\nacos\config
2020-08-03 11:01:22.318 INFO 10624 --- [ main] c.a.nacos.client.config.impl.Limiter : limitTime:5.0
2020-08-03 11:01:22.355 WARN 10624 --- [ main] c.a.c.n.c.NacosPropertySourceBuilder : Ignore the empty nacos configuration and get it based on dataId[spring-cloud-alibaba-nacos-consumer] & group[DEFAULT_GROUP]
2020-08-03 11:01:22.362 INFO 10624 --- [ main] c.a.nacos.client.config.utils.JVMUtil : isMultiInstance:false
2020-08-03 11:01:22.432 INFO 10624 --- [ main] b.c.PropertySourceBootstrapConfiguration : Located property source: [BootstrapPropertySource {name='bootstrapProperties-spring-cloud-alibaba-nacos-consumer-develop.yaml,DEFAULT_GROUP'}, BootstrapPropertySource {name='bootstrapProperties-spring-cloud-alibaba-nacos-consumer.yaml,DEFAULT_GROUP'}, BootstrapPropertySource {name='bootstrapProperties-spring-cloud-alibaba-nacos-consumer,DEFAULT_GROUP'}]
2020-08-03 11:01:22.438 INFO 10624 --- [ main] c.a.n.e.AlibabaConsumerApplication : The following profiles are active: develop
2020-08-03 11:01:23.139 WARN 10624 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'nacos-config' contains invalid characters, please migrate to a valid format.
2020-08-03 11:01:23.145 WARN 10624 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'nacos-discovery' contains invalid characters, please migrate to a valid format.
2020-08-03 11:01:23.425 WARN 10624 --- [ main] o.s.boot.actuate.endpoint.EndpointId : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.
2020-08-03 11:01:23.656 INFO 10624 --- [ main] o.s.cloud.context.scope.GenericScope : BeanFactory id=f42d18b7-4399-3a81-98f8-430b8098994d
2020-08-03 11:01:24.084 INFO 10624 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 7083 (http)
2020-08-03 11:01:24.117 INFO 10624 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-08-03 11:01:24.118 INFO 10624 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.24]
2020-08-03 11:01:24.386 INFO 10624 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-08-03 11:01:24.386 INFO 10624 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1932 ms
2020-08-03 11:01:25.517 INFO 10624 --- [ main] com.alibaba.nacos.client.naming : initializer namespace from System Property :null
2020-08-03 11:01:25.518 INFO 10624 --- [ main] com.alibaba.nacos.client.naming : initializer namespace from System Environment :null
2020-08-03 11:01:25.519 INFO 10624 --- [ main] com.alibaba.nacos.client.naming : initializer namespace from System Property :null
2020-08-03 11:01:26.062 WARN 10624 --- [ main] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2020-08-03 11:01:26.062 INFO 10624 --- [ main] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-08-03 11:01:26.070 WARN 10624 --- [ main] c.n.c.sources.URLConfigurationSource : No URLs will be polled as dynamic configuration sources.
2020-08-03 11:01:26.070 INFO 10624 --- [ main] c.n.c.sources.URLConfigurationSource : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-08-03 11:01:26.318 INFO 10624 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-08-03 11:01:26.472 INFO 10624 --- [ main] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 'Nacso-Watch-Task-Scheduler'
2020-08-03 11:01:27.752 INFO 10624 --- [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 21 endpoint(s) beneath base path '/actuator'
2020-08-03 11:01:27.962 INFO 10624 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 7083 (http) with context path ''
2020-08-03 11:01:27.969 INFO 10624 --- [ main] com.alibaba.nacos.client.naming : [BEAT] adding beat: {"cluster":"cosumer-group","ip":"192.168.56.1","metadata":{"preserved.register.source":"SPRING_CLOUD","consumerkey2":"consumervalue2","consumerkey1":"consumervalue1"},"period":5000,"port":7083,"scheduled":false,"serviceName":"aaa@qq.com@spring-cloud-alibaba-nacos-consumer","stopped":false,"weight":20.0} to beat map.
2020-08-03 11:01:28.099 INFO 10624 --- [ main] com.alibaba.nacos.client.naming : [REGISTER-SERVICE] public registering service aaa@qq.com@spring-cloud-alibaba-nacos-consumer with instance: {"clusterName":"cosumer-group","enabled":true,"ephemeral":true,"healthy":true,"instanceHeartBeatInterval":5000,"instanceHeartBeatTimeOut":15000,"ip":"192.168.56.1","ipDeleteTimeout":30000,"metadata":{"preserved.register.source":"SPRING_CLOUD","consumerkey2":"consumervalue2","consumerkey1":"consumervalue1"},"port":7083,"weight":20.0}
2020-08-03 11:01:28.113 INFO 10624 --- [ main] c.a.c.n.registry.NacosServiceRegistry : nacos registry, DEFAULT_GROUP spring-cloud-alibaba-nacos-consumer 192.168.56.1:7083 register finished
2020-08-03 11:01:28.893 INFO 10624 --- [ main] c.a.n.e.AlibabaConsumerApplication : Started AlibabaConsumerApplication in 10.834 seconds (JVM running for 12.734)
2020-08-03 11:01:28.914 INFO 10624 --- [ main] c.a.n.client.config.impl.ClientWorker : [fixed-192.168.56.1_8848] [subscribe] spring-cloud-alibaba-nacos-consumer.yaml+DEFAULT_GROUP
2020-08-03 11:01:28.916 INFO 10624 --- [ main] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [add-listener] ok, tenant=, dataId=spring-cloud-alibaba-nacos-consumer.yaml, group=DEFAULT_GROUP, cnt=1
2020-08-03 11:01:28.917 INFO 10624 --- [ main] c.a.n.client.config.impl.ClientWorker : [fixed-192.168.56.1_8848] [subscribe] spring-cloud-alibaba-nacos-consumer-develop.yaml+DEFAULT_GROUP
2020-08-03 11:01:28.917 INFO 10624 --- [ main] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [add-listener] ok, tenant=, dataId=spring-cloud-alibaba-nacos-consumer-develop.yaml, group=DEFAULT_GROUP, cnt=1
2020-08-03 11:01:28.918 INFO 10624 --- [ main] c.a.n.client.config.impl.ClientWorker : [fixed-192.168.56.1_8848] [subscribe] spring-cloud-alibaba-nacos-consumer+DEFAULT_GROUP
2020-08-03 11:01:28.918 INFO 10624 --- [ main] c.a.nacos.client.config.impl.CacheData : [fixed-192.168.56.1_8848] [add-listener] ok, tenant=, dataId=spring-cloud-alibaba-nacos-consumer, group=DEFAULT_GROUP, cnt=1
2020-08-03 11:01:28.930 INFO 10624 --- [2.168.56.1_8848] c.a.n.client.config.impl.ClientWorker : get changedGroupKeys:[]
in develop-env enviroment; user name :spring-cloud-alibaba-nacos-consumer-develop.yaml; age: 23
2020-08-03 11:01:29.638 INFO 10624 --- [-169.254.10.142] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-08-03 11:01:29.638 INFO 10624 --- [-169.254.10.142] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2020-08-03 11:01:29.654 INFO 10624 --- [-169.254.10.142] o.s.web.servlet.DispatcherServlet : Completed initialization in 15 ms
in develop-env enviroment; user name :spring-cloud-alibaba-nacos-consumer-develop.yaml; age: 23
in develop-env enviroment; user name :spring-cloud-alibaba-nacos-consumer-develop.yaml; age: 23
2020-08-03 11:01:58.627 INFO 10624 --- [2.168.56.1_8848] c.a.n.client.config.impl.ClientWorker : get changedGroupKeys:[]
in develop-env enviroment; user name :spring-cloud-alibaba-nacos-consumer-develop.yaml; age: 23
自定义 namespace 的配置
首先在控制台添加一个命名空间consumer
然后修改配置文件（bootstrap.properties）
# DataId 默认使用 `spring.application.name` 配置跟文件扩展名结合(配置格式默认使用 properties), GROUP 不配置默认使用 DEFAULT_GROUP。因此该配置文件对应的 Nacos Config 配置的 DataId 为 nacos-config.properties, GROUP 为 DEFAULT_GROUP
spring.application.name=spring-cloud-alibaba-nacos-consumer
spring.cloud.nacos.config.server-addr=192.168.56.1:8848
# 默认为properties 如果采用其他格式 必须进行配置
spring.cloud.nacos.config.file-extension=yaml
# 关闭刷新功能
# spring.cloud.nacos.config.refresh.enabled=false
spring.profiles.active=develop
# 命名空间 常用场景之一是不同环境的注册的区分隔离，例如开发测试环境和生产环境的资源（如配置、服务）隔离等 需要在nacos控制台（命名空间）添加信息
spring.cloud.nacos.config.namespace=fe4903bf-4125-4a48-b8aa-f639836681b1
在没有明确指定 ${spring.cloud.nacos.config.namespace} 配置的情况下， 默认使用的是 Nacos 上 Public 这个namespace。
配置如下：
user.name: spring-cloud-alibaba-nacos-consumer-develop.yaml
user.age: 25
current.env: develop-env namespace=fe4903bf-4125-4a48-b8aa-f639836681b1
该配置必须放在 bootstrap.properties 文件中。此外 spring.cloud.nacos.config.namespace 的值是 namespace 对应的 id，id 值可以在 Nacos 的控制台获取。并且在添加配置时注意不要选择其他的 namespae，否则将会导致读取不到正确的配置。
重新启动项目，查看控制台结果如下
自定义 Group 的配置
修改bootstrap.properties文件
# DataId 默认使用 `spring.application.name` 配置跟文件扩展名结合(配置格式默认使用 properties), GROUP 不配置默认使用 DEFAULT_GROUP。因此该配置文件对应的 Nacos Config 配置的 DataId 为 nacos-config.properties, GROUP 为 DEFAULT_GROUP
spring.application.name=spring-cloud-alibaba-nacos-consumer
spring.cloud.nacos.config.server-addr=192.168.56.1:8848
# 默认为properties 如果采用其他格式 必须进行配置
spring.cloud.nacos.config.file-extension=yaml
# 关闭刷新功能
# spring.cloud.nacos.config.refresh.enabled=false
spring.profiles.active=develop
# 命名空间 常用场景之一是不同环境的注册的区分隔离，例如开发测试环境和生产环境的资源（如配置、服务）隔离等 需要在nacos控制台（命名空间）添加信息
spring.cloud.nacos.config.namespace=fe4903bf-4125-4a48-b8aa-f639836681b1
spring.cloud.nacos.config.group=DEVELOP_GROUP
在nacos控制台添加配置，可以通过配置克隆的方式
user.name: spring-cloud-alibaba-nacos-consumer-develop.yaml DEVELOP_GROUP
user.age: 26
current.env: develop-env namespace=fe4903bf-4125-4a48-b8aa-f639836681b1
自定义扩展的 Data Id 配置
通过自定义扩展的 Data Id 配置，既可以解决多个应用间配置共享的问题，又可以支持一个应用有多个配置文件。
# config external configuration
# 1、Data Id 在默认的组 DEFAULT_GROUP,不支持配置的动态刷新
spring.cloud.nacos.config.extension-configs[0]=ext-config-common01.properties
# 2、Data Id 不在默认的组，不支持动态刷新
spring.cloud.nacos.config.extension-configs[1].data-id=ext-config-common02.properties
spring.cloud.nacos.config.extension-configs[1].group=GLOBALE_GROUP
# 3、Data Id 既不在默认的组，也支持动态刷新
spring.cloud.nacos.config.extension-configs[2].data-id=ext-config-common03.properties
spring.cloud.nacos.config.extension-configs[2].group=REFRESH_GROUP
spring.cloud.nacos.config.extension-configs[2].refresh=true
多个 Data Id 同时配置时，他的优先级关系是 spring.cloud.nacos.config.ext-config[n].data-id 其中 n 的值越大，优先级越高。
spring.cloud.nacos.config.ext-config[n].data-id 的值必须带文件扩展名，文件扩展名既可支持 properties，又可以支持 yaml/yml。 此时 spring.cloud.nacos.config.file-extension 的配置对自定义扩展配置的 Data Id 文件扩展名没有影响。
共享Data Id 配置
# 更加清晰的在多个应用间配置共享的 Data Id 支持多个共享 Data Id 的配置
# 通过 spring.cloud.nacos.config.shared-configs 来支持多个共享配置的 Data Id 时， 多个共享配置间的一个优先级的关系我们约定：按照配置出现的先后顺序，即后面的优先级要高于前面
spring.cloud.nacos.config.shared-configs[0]=bootstrap-common.properties
spring.cloud.nacos.config.shared-configs[1]=all-common.properties
# 哪些共享配置的 Data Id 在配置变化时，应用中是否可动态刷新， 感知到最新的配置值，默认false
spring.cloud.nacos.config.shared-configs[0].refresh=true
配置的优先级
Nacos Config 目前提供了三种配置能力从 Nacos 拉取相关的配置
A: 通过 spring.cloud.nacos.config.shared-configs 支持多个共享 Data Id 的配置
B: 通过 spring.cloud.nacos.config.extension-configs[n].data-id 的方式支持多个扩展 Data Id 的配置
C: 通过内部相关规则(应用名、应用名+ Profile )自动生成相关的 Data Id 配置
当三种方式共同使用时，他们的一个优先级关系是:A （共享）< B （自定义扩展）< C（默认规则）
推荐阅读
-
SpringCloud学习笔记(7)：使用Spring Cloud Config配置中心
-
Spring-Cloud-Alibaba-Nacos-Discovery 安装使用
-
Nacos--在Spring cloud中使用Spring Cloud Alibaba Nacos Discovery（Spring Cloud回顾）
-
Nacos--在Spring cloud中使用Spring Cloud Alibaba Nacos Discovery（服务注册+配置管理示例）
-
Spring Cloud Alibaba + Nacos Config实现配置动态更新
-
Spring Cloud Alibaba系列使用（二）----Nacos注册中心
-
Spring Cloud Alibaba-使用nacos做注册中心
-
Spring Cloud Alibaba(三)——使用 Nacos config 实现配置管理
-
记录使用spring-cloud-starter-alibaba-nacos-config 注册到 nacos 时配置问题。
-
Spring Cloud Alibaba 学习（4）- 客户端使用nacos config