自定义注解：

• 自定义注解
• 实现一个拦截器，根据注解来实现拦截对应的方法

自定义一个注解

// 通过注解进行拦截
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface LoginRequired {
}

使用注解

@LoginRequired
@GetMapping("/setting")
public String getSettingPage() {
    return "/site/setting";
}

实现一个拦截器

@Component
public class LoginRequiredInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if(handler instanceof HandlerMethod) {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            LoginRequired loginRequired = method.getAnnotation(LoginRequired.class);
            if(loginRequired != null && HostHolder.getUser() == null) {
                response.sendRedirect(request.getContextPath() + "/login");
                return false;
            }
        }
        return true;
    }
}

配置添加这个拦截器

registry.addInterceptor(loginRequiredInterceptor)
                .excludePathPatterns("/**/*.css", "/**/*.js", "/**/*.png", "/**/*.jpg", "/**/*.jepg");