ImportAttribute.jsp Page that demonstrates the import attribute of the page directive. Uses the ServletUtilities class (Check Servlet Section)
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!--
Example of the import attribute of the page directive.
Taken from Core Web Programming Java 2 Edition
from Prentice Hall and Sun Microsystems Press,
.
May be freely used or adapted.
-->
<HTML>
<HEAD>
<TITLE>The import Attribute</TITLE>
<LINK REL=STYLESHEET
HREF="JSP-Styles.css"
TYPE="text/css">
</HEAD>
<BODY>
<H2>The import Attribute</H2>
<%-- JSP page directive --%>
<%@ page import="java.util.*,cwp.*" %>
<%-- JSP Declaration --%>
<%!
private String randomID() {
int num = (int)(Math.random()*10000000.0);
return("id" + num);
}
private final String NO_VALUE = "<I>No Value</I>";
%>
<%-- JSP Scriptlet --%>
<%
Cookie[] cookies = request.getCookies();
String oldID =
ServletUtilities.getCookieValue(cookies, "userID", NO_VALUE);
if (oldID.equals(NO_VALUE)) {
String newID = randomID();
Cookie cookie = new Cookie("userID", newID);
response.addCookie(cookie);
}
%>
<%-- JSP Expressions --%>
This page was accessed on <%= new Date() %> with a userID
cookie of <%= oldID %>.
</BODY>
</HTML>
