ASP dynamic 301 redirect based on Product ID

[rumblepup]

I've been going nuts about this for awhile, but I just can't find the answer. I'm not a coder, but a script scraper, so I'm dead if I can't do this.

I'm changing a site over from asp to asp.net. One of the problems I'm having is 301 redirecting all of the dynamic urls to their new counterparts. There was only one constant I was able to maintain in the dabase migration, and it was the product table UID (ID's) Those are all the same and the basis for product navigation in both applications.

Well here is my problem. I need to do a 301 redirect from three files:

1. default.asp: (No problem really, just giving you background)

2. prodList.asp: Which are the Category Navigation pages. These look like this:
prodList.asp?idCategory=26

and finally
3. prodView.asp: which is the product detail view.
These look like this:
prodView.asp?idproduct=418

Ok.
For default.asp, just a 301 redirect. Found it here in the forums, no problem.

For prodList.asp, I have to 301 redirect to a corresponding Category page which looks like
SearchResult.aspx?CategoryID=(ID)

I have to do these by hand because the Category ID's are not consistent. I had to re-categorize for better SEO.
So how do I construct an IF/Then statement for the following logic
IF
prodlist.asp?idCategory=(ID)
then redirect to
SearchResult.aspx?CategoryID=(ID)
IF Not
Then
IF
And so on.

And then there is the prodView.asp page. I have to redirect these to like this
prodView.asp?idproduct=(UID)
detail.aspx?=ID(UID)
both the UID numbers will be the same number.

I'm hoping that I can do this with a couple of lines of code , to make life easier for myself.

Any help. Please! Please! Please! Please!
(I ain't to proud to beg)

[incrediblehelp]

So you don't want to simply list all the old URLs in the htaccess file with the corresponding new URLs?

Your trying to do this with a wildcard somehow?

[rumblepup]

So you don't want to simply list all the old URLs in the htaccess file with the corresponding new URLs?

IIS hosting. Doesn't have cool htaccess

Your trying to do this with a wildcard somehow?

Nope. With the prodlist.asp page I'll be manually coding 301 redirect from old Category ID to new Category ID....problem is, I don't know how.

With prodview.asp, kinda sorta.
The one constant, as I said, is the product UID. So even though the page name is different, the ID's are the same.

So the argument is
IF
prodView.asp?idproduct=(querystringID)
then
detail.aspx?=ID(querystringID)

[rumblepup]

Ok, how about this. Instead of pointing a product display page to the corresponding product display page in the new ap, what if I point all of the old product pages to a special page I have called all products, which is a list of all active products.

[blac6789]

If your urls have some sort of pattern to the conversion you can use a tool called isapi rewrite. I use it to make my urls for our shopping cart users more search engine friendly but you could also use it to do the redirect like this. Conversely just make a delimited text file and read it in from your not found page and if it finds a matching url it goes to the new page perhaps??

[rumblepup]

ISAPI rewrite not available.

[ADAM Web Design]

If you can get a custom 404 installed, you can do it that way.

What you do is you set up the 404 to gather the URL, including the querystring. Then you'd extract the querystring and redirect to the new URL.

I don't have a code sample whipped up to show you the gathering of an old URL to a new URL (since that's situation-specific), but I do have some generic ASP 301 code here:

http://www.walkonmypath.com/asp-301-redirect-code/

(It's the proper 301 code too...battle-tested to the hilt.)

[ddwebguru]

use it for 301 redirection from .asp page to .aspx page > write it in old .asp page

<%@ Language=VBScript %>
<%
Response.Status="301 Moved Permanently"
Response.AddHeader "Location", "http://www.yourdomain.com/yourpage.aspx"
%>

I think you can made it.

[tim2005]

Use this code for default.asp

<%@ Language=VBScript %>
<%
Response.Status="301 Moved Permanently"
Response.AddHeader "Location", "http://www.yourdomain.com/default.aspx"
Response.End
%>

Use this code for prodlist.asp

<%@ Language=VBScript %>
<%
Dim CategoryID
CategoryID = Request.QueryString("idCategory")

'Here you can insert some processing for category ID if you need
If IsNumber(CategoryID) Then
	CategoryID = CLng(CategoryID)
Else
	'Some default category
	CategoryID = 111
End If

If CategoryID = 1 Then
	CategoryID = 10
ElseIf CategoryID = 2 Then
	CategoryID = 22
End If
'Here you can insert some processing for category ID if you need

Response.Status="301 Moved Permanently"
Response.AddHeader "Location", "http://www.yourdomain.com/SearchResult.aspx?CategoryID=" & CStr(CategoryID)
Response.End
%>

Use this code for prodView.asp

<%@ Language=VBScript %>
<%
Dim ProductID
ProductID = Request.QueryString("idproduct")
'Check the ID
If Not IsNumber(ProductID) Then
	ProductID = "111" 'Some default product
End If
'Check the ID

Response.Status="301 Moved Permanently"
Response.AddHeader "Location", "http://www.yourdomain.com/detail.aspx? ID=" & ProductID
Response.End
%>

I suppose it should work.

[rumblepup]

You my friend....ARE AN ANIMAL!!!

The script works GREAT!

One problem I found,

<%@ Language=VBScript %>
<%
Dim ProductID
ProductID = Request.QueryString("idproduct")
'Check the ID
If Not IsNumber(ProductID) Then
SHOULD BE
If Not IsNumeric(ProductID) Then
ProductID = "111" 'Some default product
End If
'Check the ID

Response.Status="301 Moved Permanently"
Response.AddHeader "Location", "http://www.yourdomain.com/detail.aspx? ID=" & ProductID
Response.End
%>


Other than that.

OMG, now I can relax, throw back a Cuba Libre and a Glazed donut.

Thank you! Thank you! Thank you! Thank you! Thank you!

[rumblepup]

Now this is terrible.

Just found one other parameter:

prodList.asp?brand=(a brand name)

Now, I can redirect these as well, based on a name, to this

searchresults.aspx?Keywords=(a brand name)

Any idea

I can add
Dim Brand
Brand = Request.QueryString("brand")

but I can't wrap my head around the argument

[tim2005]

You are welcome :-)

Exact solution depends on how parameters "idCategory" and "brand" are used. I mean page can receive only one parameter or both.

If both parameters are used, just add processing for "brand" parameter:

<%@ Language=VBScript %>
<%
Dim CategoryID
CategoryID = Request.QueryString("idCategory")
Dim Brand
Brand = Request.QueryString("brand")

'Here you can insert some processing for category ID if you need
If IsNumeric(CategoryID) Then
   CategoryID = CLng(CategoryID)
Else
   'Some default category
   CategoryID = 111
End If

If CategoryID = 1 Then
   CategoryID = 10
ElseIf CategoryID = 2 Then
   CategoryID = 22
End If
'Here you can insert some processing for category ID if you need

Response.Status="301 Moved Permanently"
Response.AddHeader "Location", "http://www.yourdomain.com/SearchResult.aspx?CategoryID=" & CStr(CategoryID) & "&brand=" & Server.URLEncode(Brand)
Response.End
%>

If only one parameter is possible:

<%@ Language=VBScript %>
<%
Dim CategoryID
CategoryID = Request.QueryString("idCategory")
Dim Brand
Brand = Request.QueryString("brand")
Dim URL
URL = ""

'Check if CategoryID present
If Len(CategoryID) > 0 Then
   'Here you can insert some processing for category ID if you need
   If IsNumeric(CategoryID) Then
      CategoryID = CLng(CategoryID)
   Else
      'Some default category
      CategoryID = 111
   End If

   If CategoryID = 1 Then
      CategoryID = 10
   ElseIf CategoryID = 2 Then
      CategoryID = 22
   End If
   'Here you can insert some processing for category ID if you need
   URL = "http://www.yourdomain.com/SearchResult.aspx?CategoryID=" & CStr(CategoryID)

'Check if Brand present
ElseIf Len(Brand) >0 Then
   URL = "http://www.yourdomain.com/SearchResult.aspx?brand=" & Server.URLEncode(Brand)
Else
   'There are no expected parameters, so place some default search here
   URL = "http://www.yourdomain.com/SearchResult.aspx?brand=defaultbrand"
End If

Response.Status="301 Moved Permanently"
Response.AddHeader "Location", URL
Response.End

%>