当判断来路域名为yuzhenhai.com的时候，301跳转到：https://www.yuzhenhai.com/
<%
dim url
url=request.servervariables("http_host")
if url="yuzhenhai.com" then
Response.Status="301 Moved Permanently"
Response.AddHeader "Location","https://www.yuzhenhai.com/"
Response.End
end if
%>