📄 welcome.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. 10.4: welcome.jsp -->
<!-- JSP that processes a "get" request containing data. -->

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

   <!-- head section of document -->
   <head>
      <title>Processing "get" requests with data</title>
   </head>

   <!-- body section of document -->
   <body>
      <% // begin scriptlet

         String name = request.getParameter( "firstName" );

         if ( name != null ) {

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

            <h1>
               Hello <%= name %>, <br />
               Welcome to JavaServer Pages!
            </h1>

      <% // continue scriptlet

         }  // end if
         else {

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

            <form action = "welcome.jsp" method = "get">
               <p> Type your first name and press Submit</p>
      
               <p><input type = "text" name = "firstName" />
                  <input type = "submit" value = "Submit" />
               </p>
            </form>

      <% // continue scriptlet
         
         }  // end else

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

</html>  <!-- end XHTML document -->

<!--
 ***************************************************************
 * (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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