搞一个包 --- interceptor 定义拦截器

public class LoginCheckInterceptor extends HandlerInterceptorAdapter {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("拦截器被执行了....:"+request.getRequestURI());
        return super.preHandle(request, response, handler);
    }
}

在搞一个 --- config --- 覆写.配置给Spring

@Configuration
public class WebConfig implements WebMvcConfigurer{

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginCheckInterceptor())
                .addPathPatterns("/**")
                .excludePathPatterns("/login");
    }

    @Bean
    public LoginCheckInterceptor loginCheckInterceptor(){
        return new LoginCheckInterceptor();
    }
}

启动

@SpringBootApplication
@Import(WebConfig.class)
public class WebApplication {
    public static void main(String[] args) {
        SpringApplication.run(WebApplication.class,args);
    }
}

效果