SpringBoot接口防抖（防重复提交）

在Spring Boot中实现接口防抖，可以通过自定义注解和拦截器来实现。以下是一个简单的示例：

1. 自定义注解AntiDingding：

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface AntiDingding {
    long timeout() default 5000;
}

2. 创建拦截器AntiDingdingInterceptor：

@Component
public class AntiDingdingInterceptor implements HandlerInterceptor {
 
    private final Map<String, Long> cache = new ConcurrentHashMap<>();
 
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (handler instanceof HandlerMethod) {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            AntiDingding antiDingding = method.getAnnotation(AntiDingding.class);
            if (antiDingding != null) {
                String key = getKey(request);
                Long lastTime = cache.get(key);
                long currentTime = System.currentTimeMillis();
                if (lastTime != null && currentTime - lastTime < antiDingding.timeout()) {
                    // 如果在指定的时间内重复提交，则返回false，不执行方法
                    return false;
                }
                cache.put(key, currentTime);
            }
        }
        return true;
    }
 
    private String getKey(HttpServletRequest request) {
        // 根据实际情况生成唯一的key，例如可以使用用户ID、请求的URL等
        return request.getRequestURI();
    }
}

3. 注册拦截器AntiDingdingInterceptor：

@Configuration
public class WebConfig implements WebMvcConfigurer {
 
    @Autowired
    private AntiDingdingInterceptor antiDingdingInterceptor;
 
    @Override
    public void addInterceptors(InterceptorRegistry