1 <jsp:useBean id="cart" class="obs.Cart" scope="session" />
2 <jsp:useBean id=
"user" class="obs.User" scope="session" />
3
4 <%
5   
// check whether user has logged in, otherwise send user to login page
6   
out.println( user.isLogged());
7
8   
if (!user.isLogged())
9    response.sendRedirect(
"login.html");
10
11   
// read data about item
12
13   String isbn = request.getParameter(
"isbn");
14
15   cart.addItem(isbn);
16
17   response.sendRedirect(
"home.jsp");
18
19 %>
20
21   


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