如何在IHttpModule中使用404結束請求？

Question

我在寫一個新的IHttpModule。我想使用BeginRequest事件處理程序使404的某些請求無效。我如何終止請求並返回404？

Answer 1

您可以在狀態代碼明確設置爲404，如：

HttpContext.Current.Response.StatusCode = 404; 
HttpContext.Current.Response.End(); 

響應將停止執行。

Answer 2

您可以

throw new HttpException(404, "File Not Found"); 

Answer 3

試試看你能做到以下幾點：

HttpContext.Current.Response.Clear(); 
HttpContext.Current.Response.AddHeader("Location", l_notFoundPageUrl); 
HttpContext.Current.Response.Status = "404 Not Found"; 
HttpContext.Current.Response.End(); 

分配l_notFoundPageUrl到您的404頁。

Answer 4

另一種可能性是：

HttpContext.Current.Response.StatusCode = 404; 
HttpContext.Current.Response.Flush(); // Sends all currently buffered output to the client. 
HttpContext.Current.Response.SuppressContent = true; // Gets or sets a value indicating whether to send HTTP content to the client. 
HttpContext.Current.ApplicationInstance.CompleteRequest(); // Causes ASP.NET to bypass all events and filtering in the HTTP pipeline chain of execution and directly execute the EndRequest event.