SpringBoot：扩展SpringMVC

If you want to keep those Spring Boot MVC customizations and make more MVC customizations (interceptors, formatters, view controllers, and other features), you can add your own @Configuration class of type WebMvcConfigurer but without @EnableWebMvc.

编写一个配置类，添加@Configuration注解，但不能标注@EnableWebMvc注解，实现WebMvcConfigurer接口，通过实现接口中定义的方法实现扩展springmvc的功能。

@Configuration
public class MyMvcConfig implements WebMvcConfigurer {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("login");
        registry.addViewController("/login").setViewName("login");
        registry.addViewController("/index").setViewName("login");
        registry.addViewController("/login.html").setViewName("login");
        registry.addViewController("/index.html").setViewName("login");
    }
    
}