📄 guestbooklogin.jsp

📁 高级java2 大学教程(含源码,经典的Java学习教程
💻 JSP
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<?xml version = "1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<!-- Fig. 10.22: guestBookLogin.jsp -->

<%-- page settings --%>
<%@ page errorPage = "guestBookErrorPage.jsp" %>

<%-- beans used in this JSP --%>
<jsp:useBean id = "guest" scope = "page" 
   class = "com.deitel.advjhtp1.jsp.beans.GuestBean" />
<jsp:useBean id = "guestData" scope = "request" 
   class = "com.deitel.advjhtp1.jsp.beans.GuestDataBean" />

<html xmlns = "http://www.w3.org/1999/xhtml">

<head>
   <title>Guest Book Login</title>

   <style type = "text/css">
      body { 
         font-family: tahoma, helvetica, arial, sans-serif;
      }

      table, tr, td { 
         font-size: .9em;
         border: 3px groove;
         padding: 5px;
         background-color: #dddddd;
      }
   </style>
</head>

<body>
   <jsp:setProperty name = "guest" property = "*" />

   <% // start scriptlet

      if ( guest.getFirstName() == null || 
           guest.getLastName() == null ||
           guest.getEmail() == null ) {

   %> <%-- end scriptlet to insert fixed template data --%>

         <form method = "post" action = "guestBookLogin.jsp">
            <p>Enter your first name, last name and email
               address to register in our guest book.</p>

            <table>
               <tr>
                  <td>First name</td>

                  <td>
                     <input type = "text" name = "firstName" />
                  </td>
               </tr>

               <tr>
                  <td>Last name</td>

                  <td>
                     <input type = "text" name = "lastName" />
                  </td>
               </tr>

               <tr>
                  <td>Email</td>

                  <td>
                     <input type = "text" name = "email" />
                  </td>
               </tr>

               <tr>
                  <td colspan = "2">
                     <input type = "submit" 
                        value = "Submit" />
                  </td>
               </tr>
            </table>
         </form>

   <% // continue scriptlet

      }  // end if
      else {
         guestData.addGuest( guest );

   %> <%-- end scriptlet to insert jsp:forward action --%>

         <%-- forward to display guest book contents --%>
         <jsp:forward page = "guestBookView.jsp" />

   <% // continue scriptlet

      }  // end else

   %> <%-- end scriptlet --%>
</body>

</html>


<!--
 ***************************************************************
 * (C) Copyright 2002 by Deitel & Associates, Inc. and         *
 * Prentice Hall. All Rights Reserved.                         *
 *                                                             *
 * DISCLAIMER: The authors and publisher of this book have     *
 * used their best efforts in preparing the book. These        *
 * efforts include the development, research, and testing of   *
 * the theories and programs to determine their effectiveness. *
 * The authors and publisher make no warranty of any kind,     *
 * expressed or implied, with regard to these programs or to   *
 * the documentation contained in these books. The authors     *
 * and publisher shall not be liable in any event for          *
 * incidental or consequential damages in connection with, or  *
 * arising out of, the furnishing, performance, or use of      *
 * these programs.                                             *
 ***************************************************************
-->
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