中查找“实例讲解JSP Model2体系结构（中）”更多相关内容
中查找“实例讲解JSP Model2体系结构（中）”更多相关内容
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实例讲解JSP Model2体系结构（中）
来源：网络收集 作者：佚名 时间：2007-04-26 00:22:26
理解“音乐无国界”
“音乐无国界”的主界面是JSP页 Eshop.jsp(见代码清单1)。你会注意到，这个页面几乎只作为专门的用户界面，不承担任何处理任务――是一个最理想的JSP方案。另外，请注意另一个JSP页Cart.jsp（见代码清单2）被Eshop.jsp通过指令<jsp:include page="Cart.jsp" flush="true" />包含于其中。
代码清单 1:EShop.jsp
<%@ page session="true" %>
<html>
<head>
<title>Music Without Borders</title>
</head>
<body bgcolor="#33CCFF">
<font face="Times New Roman,Times" size="+3">
Music Without Borders
</font>
<hr><p>
<center>
<form name="shoppingForm"
action="/examples/servlet/ShoppingServlet"
method="POST">
<b>CD:</b>
<select name=CD>
<option>Yuan | The Guo Brothers | China | $14.95</option>
<option>Drums of Passion | Babatunde Olatunji | Nigeria | $16.95</option>
<option>Kaira | Tounami Diabate| Mali | $16.95</option>
<option>The Lion is Loose | Eliades Ochoa | Cuba | $13.95</option>
<option>Dance the Devil Away | Outback | Australia | $14.95</option>
<option>Record of Changes | Samulnori | Korea | $12.95</option>
<option>Djelika | Tounami Diabate | Mali | $14.95</option>
<option>Rapture | Nusrat Fateh Ali Khan | Pakistan | $12.95</option>
<option>Cesaria Evora | Cesaria Evora | Cape Verde | $16.95</option>
<option>Ibuki | Kodo | Japan | $13.95</option>
</select>
<b>Quantity: </b><input type="text" name="qty" SIZE="3" value=1>
<input type="hidden" name="action" value="ADD">
<input type="submit" name="Submit" value="Add to Cart">
</form>
</center>
<p>
<jsp:include page="Cart.jsp" flush="true" />
</body>
</html>
代码清单 2:Cart.jsp
<%@ page session="true" import="java.util.*, shopping.CD" %>
<%
Vector buylist = (Vector) session.getValue("shopping.shoppingcart");
if (buylist != null && (buylist.size() > 0)) {
%>
<center>
<table border="0" cellpadding="0" width="100%" bgcolor="#FFFFFF">
<tr>
<td><b>ALBUM</b></td>
<td><b>ARTIST</b></td>
<td><b>COUNTRY</b></td>
<td><b>PRICE</b></td>
<td><b>QUANTITY</b></td>
<td></td>
</tr>
<%
for (int index=0; index < buylist.size();index++) {
CD anOrder = (CD) buylist.elementAt(index);
%>
<tr>
<td><b><%= anOrder.getAlbum() %></b></td>
<td><b><%= anOrder.getArtist() %></b></td>
<td><b><%= anOrder.getCountry() %></b></td>
<td><b><%= anOrder.getPrice() %></b></td>
<td><b><%= anOrder.getQuantity() %></b></td>
<td>
<form name="deleteForm"
action="/examples/servlet/ShoppingServlet"
method="POST">
<input type="submit" value="Delete">
<input type="hidden" name= "delindex" value='<%= index %>'>
<input type="hidden" name="action" value="DELETE">
</form>
</td>
</tr>
<% } %>
</table>
<p>
<form name="checkoutForm"
action="/examples/servlet/ShoppingServlet"
method="POST">
<input type="hidden" name="action" value="CHECKOUT">
<input type="submit" name="Checkout" value="Checkout">
</form>
“音乐无国界”的主界面是JSP页 Eshop.jsp(见代码清单1)。你会注意到，这个页面几乎只作为专门的用户界面，不承担任何处理任务――是一个最理想的JSP方案。另外，请注意另一个JSP页Cart.jsp（见代码清单2）被Eshop.jsp通过指令<jsp:include page="Cart.jsp" flush="true" />包含于其中。
代码清单 1:EShop.jsp
<%@ page session="true" %>
<html>
<head>
<title>Music Without Borders</title>
</head>
<body bgcolor="#33CCFF">
<font face="Times New Roman,Times" size="+3">
Music Without Borders
</font>
<hr><p>
<center>
<form name="shoppingForm"
action="/examples/servlet/ShoppingServlet"
method="POST">
<b>CD:</b>
<select name=CD>
<option>Yuan | The Guo Brothers | China | $14.95</option>
<option>Drums of Passion | Babatunde Olatunji | Nigeria | $16.95</option>
<option>Kaira | Tounami Diabate| Mali | $16.95</option>
<option>The Lion is Loose | Eliades Ochoa | Cuba | $13.95</option>
<option>Dance the Devil Away | Outback | Australia | $14.95</option>
<option>Record of Changes | Samulnori | Korea | $12.95</option>
<option>Djelika | Tounami Diabate | Mali | $14.95</option>
<option>Rapture | Nusrat Fateh Ali Khan | Pakistan | $12.95</option>
<option>Cesaria Evora | Cesaria Evora | Cape Verde | $16.95</option>
<option>Ibuki | Kodo | Japan | $13.95</option>
</select>
<b>Quantity: </b><input type="text" name="qty" SIZE="3" value=1>
<input type="hidden" name="action" value="ADD">
<input type="submit" name="Submit" value="Add to Cart">
</form>
</center>
<p>
<jsp:include page="Cart.jsp" flush="true" />
</body>
</html>
代码清单 2:Cart.jsp
<%@ page session="true" import="java.util.*, shopping.CD" %>
<%
Vector buylist = (Vector) session.getValue("shopping.shoppingcart");
if (buylist != null && (buylist.size() > 0)) {
%>
<center>
<table border="0" cellpadding="0" width="100%" bgcolor="#FFFFFF">
<tr>
<td><b>ALBUM</b></td>
<td><b>ARTIST</b></td>
<td><b>COUNTRY</b></td>
<td><b>PRICE</b></td>
<td><b>QUANTITY</b></td>
<td></td>
</tr>
<%
for (int index=0; index < buylist.size();index++) {
CD anOrder = (CD) buylist.elementAt(index);
%>
<tr>
<td><b><%= anOrder.getAlbum() %></b></td>
<td><b><%= anOrder.getArtist() %></b></td>
<td><b><%= anOrder.getCountry() %></b></td>
<td><b><%= anOrder.getPrice() %></b></td>
<td><b><%= anOrder.getQuantity() %></b></td>
<td>
<form name="deleteForm"
action="/examples/servlet/ShoppingServlet"
method="POST">
<input type="submit" value="Delete">
<input type="hidden" name= "delindex" value='<%= index %>'>
<input type="hidden" name="action" value="DELETE">
</form>
</td>
</tr>
<% } %>
</table>
<p>
<form name="checkoutForm"
action="/examples/servlet/ShoppingServlet"
method="POST">
<input type="hidden" name="action" value="CHECKOUT">
<input type="submit" name="Checkout" value="Checkout">
</form>
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