1、删除nacos安装路径下的bin同路径下的data文件，重启！
2、保证你的nacos服务是启动的。
浏览器输入：
```java
http://127.0.0.1:8848/nacos
```
可以正常打开。
3、idea所在的机子没开VPN等。
failed to req API:/nacos/v1/ns/service/list after all servers
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