1. 自定义一个异常public class UserNotExistException extends RuntimeException {
public UserNotExistException(){
super("用户不存在");
}
}2. 定义controller层@Controller
public class HelloController {
SpringBoot框架—自动配置原理的解密什么是SpringBoot的自动配置？SpringBoot官网对SpringBoot的定义如下：SpringBoot makes it easy to create stand-alone, production-grade Spring-based Applications that you can run. We take an opiniona
