https://izen.live/Blog/info/13.html

/// <summary>
/// action方法过滤器
/// </summary>
public class PlatformActionFilter : Attribute, IActionFilter
{private static MemoryCache cache = new MemoryCache(new MemoryCacheOptions());public const string hiddenToken = "hiddenToken";private ILog _log;public PlatformActionFilter(){this._log = LogManager.GetLogger(Startup.Repository.Name, typeof(PlatformActionFilter));}public void OnActionExecuted(ActionExecutedContext context){}/// <summary>/// action 执行之前/// </summary>/// <param name="context"></param>public virtual void OnActionExecuting(ActionExecutingContext filterContext){string httpMethod = WebUtility.HtmlEncode(filterContext.HttpContext.Request.Method);if (httpMethod == "POST"){//使用请求路径作为唯一keystring path = filterContext.HttpContext.Request.Path;string cacheToken = $"{hiddenToken}_{path}";string keyValue = new Guid().ToString() + DateTime.Now.Ticks;if (path != null){//var cache = iZen.Utils.Core.iCache.CacheManager.GetCacheValue(cacheToken);var cv = cache.Get(cacheToken);if (cv == null){//iZen.Utils.Core.iCache.CacheManager.SetChacheValueSeconds(cacheToken, keyValue, 1);//设置缓存1秒过期cache.Set(cacheToken, keyValue, new MemoryCacheEntryOptions() { SlidingExpiration = TimeSpan.FromSeconds(1) });_log.Info($"提交成功");}else{_log.Error($"{filterContext.HttpContext.Request.Method},请不要重复提交");//设置了 filterContext.Result 表示返回过滤失败的结果//filterContext.Result = new BadRequestObjectResult(filterContext.ModelState);filterContext.Result = new BadRequestObjectResult("请不要重复提交");}}return;}this.OnActionExecuting(filterContext);}}

action上添加过滤器特性

/// <summary>
/// 测试重复提交过滤器
/// </summary>
/// <returns></returns>
[PlatformActionFilter]
[HttpPost]
public JsonResult TestPost()
{var result = new ResultModel() { IsSuccess = true, Info = "测试重复提交" };return Json(result);
}