Asp.Net WebApi防重提交

一、添加过滤器

/// <summary>
   /// 重复提交
   /// </summary>
   public class ReSubmitAttribute : ActionFilterAttribute
   {
       /// <summary>
       /// 操作成功提示消息
       /// </summary>
       public string SuccessMsg = null;
 
       /// <summary>
       /// 方法执行前的拦截方法
       /// </summary>
       /// <param name="actionContext"></param>
       public override void OnActionExecuting(HttpActionContext actionContext)
       {
           if (actionContext.Request.Method == HttpMethod.Post)
           {
               string reValue = HttpContext.Current.Request.Form["ReFlag"];
               if (string.IsNullOrEmpty(reValue))
               {
                   actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.OK, BaseResult.GetError("提交数据中必须包含防重提交标识"), "application/json");
                   return;
               }
               string cacheName = RedisHelper.GetCacheName(RedisCacheType.ReSubmit, reValue);
               string cacheValue = CacheManager.GetCache(cacheName);
               string submitValue = actionContext.ActionArguments.Count > 0 ? MD5Helper.MD5Encrypt32(SerializeHelper.ToJson(actionContext.ActionArguments)) : "0";
               if (string.IsNullOrEmpty(cacheValue) || cacheValue.Equals(submitValue) == false)
               {
                   CacheManager.SetCache(cacheName, submitValue, TimeSpan.FromMinutes(1), Tools.Cache.Redis.ExpirType.Absolute);
                   return;
               }
               if (cacheValue.Equals(submitValue))
               {
                   actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.OK, BaseResult.GetSuccess(string.IsNullOrEmpty(SuccessMsg) ? "操作成功" : SuccessMsg), "application/json");
                   return;
               }
           }
       }
 
       /// <summary>
       /// 删除重复提交标识
       /// </summary>
       public static void RemoveReFlagCache()
       {
           string reValue = HttpContext.Current.Request.Form["ReFlag"];
           if (string.IsNullOrEmpty(reValue) == false)
           {
               string cacheName = RedisHelper.GetCacheName(RedisCacheType.ReSubmit, reValue);
               CacheManager.RemoveCache(cacheName);
           }
       }
   }

二、添加实体基类

/// <summary>
/// 防重提交实体
/// </summary>
public abstract class ReSubmitModel
{
    /// <summary>
    /// 防重提交标识
    /// </summary>
    [Ignore]
    public Guid ReFlag { get; set; } = Guid.NewGuid();
}