Obtain the URL of the previous page and the URL of this page.

Obtain the URL of the previous page and the URL of this page.

1. Obtain the URL of the previous webpage:

String url=request.getHeader("Referer");

2. Obtain the URL of this webpage:

String url=request.getScheme()+"://"+ request.getServerName()+request.getRequestURI();

How does ASP obtain the URL on this page?

The method is as follows:

<%
Private Function GetUrl ()
Dim ScriptAddress, M_ItemUrl, M_item
ScriptAddress = CStr (Request. ServerVariables ("SCRIPT_NAME") 'gets the current address
M_ItemUrl = ""
If (Request. QueryString <> "") Then
ScriptAddress = ScriptAddress &"? "
For Each M_item In Request. QueryString
If InStr (page, M_Item) = 0 Then
M_ItemUrl = M_ItemUrl & M_Item & "=" & Server. URLEncode (Request. QueryString ("" & M_Item &""))&"&"
End If
Next
End if
GetUrl = ScriptAddress & M_ItemUrl
End Function
Response. write geturl ()
%>

Yes, you can obtain part of the URL. Test it.

In PHP, how do I obtain the URL of the previous page?

$ _ SERVER ['HTTP _ referer']