问Spring +假冒伪劣+ Nacos未能req :/nacos/v1/ns/实例

EN

你好，我试着用Nacos作为配置中心，启动了一个假象+ SpringCloud演示，但是Nacos异常启动，请帮我检查一下问题，非常感谢！

我的异常消息：java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers([127.0.0.1:8848]) tried: failed to req API:127.0.0.1:8848/nacos/v1/ns/instance. code:500 msg: java.net.ConnectException: Connection refused (Connection refused) at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:467) ~[nacos-client-1.1.4.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:389) ~[nacos-client-1.1.4.jar:na] at com.alibaba.nacos.client.naming.net.NamingProxy.registerService(NamingProxy.java:191) ~[nacos-client-1.1.4.jar:na] at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:207) ~[nacos-client-1.1.4.jar:na] at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:64) ~[spring-cloud-alibaba-nacos-discovery-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) ~[spring-cloud-commons-2.2.1.RELEASE.jar:2.2.1.RELEASE]

• 我的application.yaml spring: application: name: demo-provider cloud: nacos: discovery: server-addr: 127.0.0.1:8848 server: port: ${random.int[10000,19999]}

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• 我的代码： @RestController公共类ProviderController { 私有日志记录器= LoggerFactory.getLogger(ProviderController.class)；@Value("${server.port}")私有整数serverPort；@GetMapping("/echo")公共字符串回显(字符串名称)引发InterruptedException { //模拟执行100行时长。Thread.sleep(100 L)；//记录被调用的日志logger.info(“回声”，名称)；返回serverPort + "-provider:“+名称；} }