User Example

import javax.servlet.*; import javax.servlet.http.*; /** * Simple Servlet Example using the getRemoteUser() method. */ public class UserServletExample extends HttpServlet { public void doGet (HttpServletRequest req, HttpServletResponse res) throws ServletException, java.io.IOException { // Start printing out the HTML page res.setContentType("text/html"); java.io.PrintWriter out = res.getWriter(); out.println(""); out.println("User Example"); out.println(""); // Get the username from the request. // This will be null String username = req.getRemoteUser(); if (username == null) { // User is not logged in. out.println("Hello. You are not logged in."); } else if ("Bob".equals(username)) { out.println("Hello, Bob. Nice to see you again."); } else { out.println("Hello, "+username+"."); } // Finish the HTML page out.println(""); out.println(""); out.close(); } }