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key
string 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);
}