wrongdestination.java

Servlet与JSP核心编程第二版代码

package coreservlets;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

/** Servlet that sends IE users to the Netscape home page and
 *  Netscape (and all other) users to the Microsoft home page.
 *  <P>
 *  Taken from Core Servlets and JavaServer Pages 2nd Edition
 *  from Prentice Hall and Sun Microsystems Press,
 *  http://www.coreservlets.com/.
 *  &copy; 2003 Marty Hall; may be freely used or adapted.
 */

public class WrongDestination extends HttpServlet {
  public void doGet(HttpServletRequest request,
                    HttpServletResponse response)
      throws ServletException, IOException {
    String userAgent = request.getHeader("User-Agent");
    if ((userAgent != null) &&
        (userAgent.indexOf("MSIE") != -1)) {
      response.sendRedirect("http://home.netscape.com");
    } else {
      response.sendRedirect("http://www.microsoft.com");
    }
  }
}