There was an unexpected error (type=Not Found, status=404)

There was an unexpected error (type=Not Found, status=404)

报错：

There was an unexpected error (type=Not Found, status=404)

 问题：

springboot项目启动，访问接口报错，可能时类没有被扫描到

解决方法：

在application类中添加包扫描,代码如下：

@ComponentScan("com.example.*")