JSP Redirect or Forward Based on Host Header Value

String url = ((HttpServletRequest) request).getRequestURI();
if (url.toUpperCase().indexOf("ww1.domain.com")>-1 )
response.sendRedirect("ww1.domain.com/blah1");
else if (url.toUpperCase().indexOf("ww2.domain.com")>-1)
response.sendRedirect("ww2.domain.com/blah2");

<% response.sendRedirect("blah"+request.getServerName().substring(2,request.getServerName().indexOf('.'))); %>

Actually ysnky is right, you should use getRequestURI. I should go back to my beer.

Put this at the top of the page, before anything else, and nothing happens?

<%
String url = ((HttpServletRequest) request).getRequestURI();
if (url.toUpperCase().indexOf("sub1.domain.com")>-1)
        response.sendRedirect("sub1.domain.com/url1");
else if (url.toUpperCase().indexOf("sub2.domain.com")>-1)
        response.sendRedirect("sub2.domain.com/url2");
else if (url.toUpperCase().indexOf("sub3.domain.com")>-1)
        response.sendRedirect("sub3.domain.com/url3");
%>
Never worked with JSP, so may be something simple I'm missing?

if you are using toUpperCase() method must upper all domain names or you can use toLowerCase()

use this;

<%
String url = ((HttpServletRequest) request).getRequestURI();
if (url.toLowerCase().indexOf("sub1.domain.com")>-1)
        response.sendRedirect("sub1.domain.com/url1");
else if (url.toLowerCase().indexOf("sub2.domain.com")>-1)
        response.sendRedirect("sub2.domain.com/url2");
else if (url.toLowerCase().indexOf("sub3.domain.com")>-1)
        response.sendRedirect("sub3.domain.com/url3");
%>

I did that exactly and still it's not doing anything??

you have to trace, check what is the url variable value is set?

Can you let me know how to do this?

try this and see what url is?

String url = ((HttpServletRequest) request).getRequestURI();
out.println(url);
if (true)
return;

Just prints this

/

On a blank page....

That makes sense looking at the documentation

Since it's a get request and there is nothing after the "/" it returns only a "/"

getRequestURI
public java.lang.String getRequestURI()Returns the part of this request's URL from the protocol name up to the query string in the first line of the HTTP request. The web container does not decode this String. For example: First line of HTTP request  Returned Value
POST /some/path.html HTTP/1.1  /some/path.html  
GET http://foo.bar/a.html HTTP/1.0   /a.html  
HEAD /xyz?a=b HTTP/1.1  /xyz  

Almost there
now returns
http://sub.domain.com

How do I strip out the protocol and the // to just get

sub.domain.com?

Never mind, it works with the code you sent, thanks!