不用写空方法，直接映射

WebMvcConfigurer

package com.atguigu.gulimall.auth.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * @author : liuke
 * @date : 2022-11-21 21:54
 **/
@Configuration
public class GulimallWebConfig implements WebMvcConfigurer {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/login.html").setViewName("login");
        registry.addViewController("/reg.html").setViewName("reg");
    }
}