import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class GoTo extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
IOException {
// Determine the site where they want to go
String site = req.getPathInfo();
String query = req.getQueryString();
// Handle a bad request
if (site == null) {
res.sendError(res.SC_BAD_REQUEST, "Extra path info required");
}
// Cut off the leading "/" and append the query string
// We're assuming the path info URL is always absolute
String url = site.substring(1) + (query == null ? "" : "?" + query);
// Log the requested URL and redirect
log(url); // or write to a special file
res.sendRedirect(url);
}
}