Use 404. asp to automatically generate a page that does not exist

First, create a file 404.asp in the website directory

<%
Option explicit
Dim requesturl, requestfile
Requesturl = request. servervariables ("QUERY_STRING ")
Requestfile = Replace (requesturl, "404; http: //" & request. servervariables ("http_host "),"")
'Automatically generate the corresponding file based on the requestfile
'..............
Response. Redirect requestfile
%>

In IIS, select the website, attributes, and custom error information, find 404, edit, and select the URL for the message type, enter the URL address, and save