控制台打印错误

2023-10-14 20:43:38.747 ERROR 10024 --- [           main] c.a.c.n.c.NacosPropertySourceBuilder     : get data from Nacos error,dataId:null.yaml 
com.alibaba.nacos.api.exception.NacosException: 
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This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sat Oct 14 20:43:38 CST 2023There was an unexpected error (type=Forbidden, status=403).user not found!
	at com.alibaba.nacos.client.config.impl.ClientWorker.getServerConfig(ClientWorker.java:239) ~[nacos-client-1.4.2.jar:na]
	at com.alibaba.nacos.client.config.NacosConfigService.getConfigInner(NacosConfigService.java:160) ~[nacos-client-1.4.2.jar:na]
	at com.alibaba.nacos.client.config.NacosConfigService.getConfig(NacosConfigService.java:100) ~[nacos-client-1.4.2.jar:na]
	at com.alibaba.cloud.nacos.client.NacosPropertySourceBuilder.loadNacosData(NacosPropertySourceBuilder.java:85) [spring-cloud-starter-alibaba-nacos-config-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at com.alibaba.cloud.nacos.client.NacosPropertySourceBuilder.build(NacosPropertySourceBuilder.java:73) [spring-cloud-starter-alibaba-nacos-config-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadNacosPropertySource(NacosPropertySourceLocator.java:199) [spring-cloud-starter-alibaba-nacos-config-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadNacosDataIfPresent(NacosPropertySourceLocator.java:186) [spring-cloud-starter-alibaba-nacos-config-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.loadApplicationConfiguration(NacosPropertySourceLocator.java:144) [spring-cloud-starter-alibaba-nacos-config-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at com.alibaba.cloud.nacos.client.NacosPropertySourceLocator.locate(NacosPropertySourceLocator.java:103) [spring-cloud-starter-alibaba-nacos-config-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:52) [spring-cloud-context-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:47) [spring-cloud-context-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at org.springframework.cloud.bootstrap.config.PropertySourceBootstrapConfiguration.initialize(PropertySourceBootstrapConfiguration.java:98) [spring-cloud-context-2.2.6.RELEASE.jar:2.2.6.RELEASE]
	at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:626) [spring-boot-2.3.8.RELEASE.jar:2.3.8.RELEASE]
	at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:370) [spring-boot-2.3.8.RELEASE.jar:2.3.8.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-2.3.8.RELEASE.jar:2.3.8.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.8.RELEASE.jar:2.3.8.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.8.RELEASE.jar:2.3.8.RELEASE]
	at com.lyy.demo3.Demo3Application.main(Demo3Application.java:10) [classes/:na]

错误原因

是由于nacos开启了权限控制后，bootstrap.yml中没有配置用户名密码或者用户名密码出错，或者配置了的用户名没有该namespace的权限。

解决方法

方法一

关闭权限认证(不推荐，安全系数极低)

方法二

配置拥有该namespace权限并且正确的用户名密码