<form method="get" action="servlet/servJump">
         <input type="text" name="what" value="redir disp"><br>
   <input type="submit">
  </form>
  <hr>  /**
   * The doGet method of the servlet. <br>
   *
   * This method is called when a form has its tag value method equals to get.
   * 
   * @param request the request send by the client to the server
   * @param response the response send by the server to the client
   * @throws ServletException if an error occurred
   * @throws IOException if an error occurred
   */
  public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
 /*
   response.setContentType("text/html");
   PrintWriter out = response.getWriter();
   out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
   out.println("<HTML>");
   out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
   out.println("  <BODY>");
   out.print("    This is ");
   out.print(this.getClass());
   out.println(", using the GET method");
   out.println("  </BODY>");
   out.println("</HTML>");
   out.flush();
   out.close();
   */
   
   String what=null;
   if(request.getParameter("what") != null){
    what=request.getParameter("what"); 
   }
   if(what.startsWith("re"))
   {  
          response.sendRedirect("http://www.baidu.com");
   }
   else if(what.startsWith("dis"))
   {
    request.getRequestDispatcher("/Result2.jsp").forward(request, response);
   }
   
  }