> ...how we can get a image with a dynamic source via servlet?!?
> Thanks
> nicole
Think about returning a HTTP redirect from the servlet to the static file.
eg
http://www.w3.org/Protocols/Specs.html ->
http://www.w3.org/Protocols/rfc2068/rfc2068
(from RFC 2068: HTTP 1.1)
10.3.4 303 See Other
The response to the request can be found under a different URI and
SHOULD be retrieved using a GET method on that resource. This method
exists primarily to allow the output of a POST-activated script to
redirect the user agent to a selected resource. The new URI is not a
substitute reference for the originally requested resource. The 303
response is not cachable, but the response to the second (redirected)
request MAY be cachable.
If the new URI is a location, its URL SHOULD be given by the Location
field in the response. Unless the request method was HEAD, the entity
of the response SHOULD contain a short hypertext note with a
hyperlink to the new URI(s).
and also
http://java.sun.com/products/servlet/2.2/javadoc/javax/servlet/http/HttpServ
letResponse.html#sendRedirect(java.lang.String)
thus
public abstract class ImageRedirector
extends HttpServlet
{
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
String relativeOrAbsoluteUrl_1 = "../images/whatever.123.gif";
String relativeOrAbsoluteUrl_2 =
"http://us.a1.yimg.com/us.yimg.com/i/ww/m5v5.gif";;
resp.sendRedirect(relativeOrAbsoluteUrl_1);
}
}
john
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