|
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Hashtable;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class PersonalizedServlet extends HttpServlet {
Hashtable accesses = new Hashtable();
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/html");
PrintWriter out = res.getWriter();
String remoteUser = req.getRemoteUser();
if (remoteUser == null) {
out.println("Welcome!");
}
else {
out.println("Welcome, " + remoteUser + "!");
Date lastAccess = (Date) accesses.get(remoteUser);
if (lastAccess == null) {
out.println("This is your first visit!");
}
else {
out.println("Your last visit was " + accesses.get(remoteUser));
}
if (remoteUser.equals("User A")) {
out.println("HI.");
}
accesses.put(remoteUser, new Date());
}
}
}
|
