Whitelabel Error PageThere was an unexpected error (type=Not Found, status=404)问题解决

记录学习springboot遇到的问题
新建一个springboot项目
Whitelabel Error PageThere was an unexpected error (type=Not Found, status=404)问题解决运行，访问localhost:8080/hello,出现错误
究其原因就是 springboot默认机制下是类要放在Application下，不然扫描不到，建议初学者还是老老实实按默认机制的来，这样出错的概率会低很多
Whitelabel Error PageThere was an unexpected error (type=Not Found, status=404)问题解决
这样就可以啦

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