nacos client keep reporting ’config changed'

[rickyEI]

Describe the bug
如果我的远程配置文件在修改配置时，不小心在key前面加了空格，会导致客户端这里不间断的打config changed的日志。
If my remote configuration file accidentally adds a space in front of the key when modifying the configuration, it will cause the client to continuously type config changed logs.

Expected behavior
期望可以有明确的提示，是配置的问题，或者处理这个空格。而不是打config changed日志，不好排查。
It is expected that there can be a clear prompt, which is a configuration problem, or how to deal with this blank space. Instead of logging 'config changed', it is not easy to check.

Actually behavior
不间断的打config changed日志。
Continuously log config changed.

Desktop (please complete the following information):

• Version nacos-server 1.3.2, nacos-client 1.4.3
• SDK spring-cloud-alibaba-nacos

[KomachiSion]

是不是设置了命名空间为public？

[rickyEI]

是不是设置了命名空间为public？

没设置命名空间，只是不小心在某个配置项前面加了个空格，导致一直报这个configChange日志。如果不支持，是不是可以加个提示有空格啥的。如果配置项多了，哪里不小心加了个空格这种问题，如果之前没有遇到过，感觉不是很好排查。

[KomachiSion]

配置项加个空格应该不影响， 一直打这个日志应该是md5一只没有对上。

[rickyEI]

我把服务从nacos上拉到的配置和在nacos上的配置做了个对比。服务拉到的配置是没有这个空格的，nacos上的是有这个空格的。因为这个原因服务拉到的配置的md5一直都是同一个。

[realJackSun]

拉取到本地之后的配置会自动把空格删除？

[realJackSun]

#6891
跟这个是不是类似

[rickyEI]

现象类似，拉取到本地的配置确实是自动把空格给删掉了

[realJackSun]

@rickyEI 请升级到1.4.3，新版本修复了

[stale]

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