java - Getting back to the client page -

in web i'm using servlet server. after have processed request, page made request. how do that?

i have used "response.sendredirect(request.getparameter("url"));" i'm getting blank page instead of page made request.

i appreciate every come.

you use refererhttp header:

public void doget(httpservletrequest request, httpservletresponse response)         throws servletexception, ioexception {   string ref = request.getheader("referer");   response.sendredirect(ref); } 

but keep in mind, refererheader optional , browser clients may not send it.