First, process analysis
Second, the Code
1.view Layer
(1) list.jsp
<tr> <td colspan= "7" align= "right" > <a href= "Javascript:jiesuan ();" Id= "Jiesuan"class= "Jiesuan" ></a> </td> </tr></table> <form id= "Jiesuanform" action= "<c:url VA Lue= '/cartitemservlet '/> "method=" post "> <input type=" hidden "name=" Cartitemids "id=" Cartitemids "/> <input type= "hidden" name= "Total" id= "Hiddentotal"/> <input type= "hidden" name= "method" Value= "Loadcar Titems "/> </form>/** Settlement*/function Jiesuan () {//1. Get the ID of all selected entries and put them in the arrayvar ids =NewArray (); $("Input[type=checkbox][name=checkboxbtn]:checked"). Each (function (index, Domel) {Ids.push ($ (Domel). Val ()); }); //2. Set the value of the array to ToString (), and then assign the cartitemids of the form to this hidden$ ("#cartItemIds"). Val (IDs); //Save the total value to the form$ ("#hiddenTotal"). Val ($ ("#total"). text ()); //3. Submit this form$ ("#jieSuanForm"). Submit (); }
(2) showitem.jsp
1<%@ page language= "Java"Import= "java.util.*" pageencoding= "UTF-8"%>2<%@ taglib prefix= "C" uri= "Http://java.sun.com/jsp/jstl/core"%>3<%@ taglib prefix= "FMT" uri= "Http://java.sun.com/jsp/jstl/fmt"%>4 5 6<! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >789<title>showitem.jsp</title>Ten One<meta http-equiv= "Pragma" content= "No-cache" > A<meta http-equiv= "Cache-control" content= "No-cache" > -<meta http-equiv= "Expires" content= "0" > -<meta http-equiv= "keywords" content= "keyword1,keyword2,keyword3" > the<meta http-equiv= "description" content= "This is my page" > -<!-- -<link rel= "stylesheet" type= "Text/css" href= "Styles.css" > -- +<link rel= "stylesheet" type= "Text/css" href= "<c:url value= '/jsps/css/cart/showitem.css '/>" > -<script src= "<c:url value= '/jquery/jquery-1.5.1.js '/>" ></script> +<script src= "<c:url value= '/js/round.js '/>" ></script> A<style type= "Text/css" > at#addr {width:500px; height:32px;border:1px solid #7f9db9; padding-left:10px; line-height:32px;} -</style> - -<script type= "Text/javascript" > - //Calculate Totals - $ (function () { invar total = 0; -$ (". Subtotal"). each (function () { toTotal + = number ($ ( This). text ()); + }); - //$ ("#total"). Text (Round (total, 2)); the }); *</script> $Panax Notoginseng -<body> the<form id= "Form1" action= "<c:url value= '/jsps/order/ordersucc.jsp '/>" method= "POST" > +<input type= "hidden" name= "Cartitemids" value= "/> A<input type= "hidden" name= "method" Value= "/> the<table width= "95%" align= "center" cellpadding= "0" cellspacing= "0" > +<tr bgcolor= "#efeae5" > -<TD width= "400px" colspan= "5" ><span style= "font-weight:900;" > Generate Orders </span></td> $</tr> $<TR align= "center" > -<TD width= "10%" > </td> -<TD width= "50%" > Book name </td> the<td> Unit Price </td> -<td> Quantity </td>Wuyi<td> Subtotal </td> the</tr> - Wu -<c:foreach items= "${items}" var= "Item" > About<TR align= "center" > $<TD align= "Right" > -<aclass= "Linkimage" href= "<c:url value= '/jsps/book/desc.jsp '/>" > '/></a> -</td> -<TD align= "Left" > A<a href= "<c:url value= '/jsps/book/desc.jsp '/>" ><span>${item.book.bname}</span></a> +</td> the<td>¥${item.book.currprice}</td> -<td>${item.quantity}</td> $<td> the<spanclass= "Price_n" >¥<spanclass= "Subtotal" >${item.subtotal}</span></span> the</td> the</tr> the</c:forEach> - in<tr> the<TD colspan= "6" align= "right" > the<span> Total: </span><spanclass= "price_t" >¥<span id= "Total" >${total}</span></span> About</td> the</tr> the<tr> the<TD colspan= "5" bgcolor= "#efeae5" ><span style= "font-weight:900" > Shipping address </span></td> +</tr> -<tr> the<TD colspan= "6" >Bayi<input id= "addr" type= "text" name= "address" value= "Beijing Changping District xisanqi Xisanqi Office Building 1-layer Preach intelligence podcast Goodbye"/> the</td> the</tr> -<tr> -<TD style= "BORDER-TOP-WIDTH:4PX;" colspan= "5" align= "right" > the<a id= "Linksubmit" href= "javascript:$ (' #form1 '). Submit ();" > Submit Orders </a> the</td> the</tr> the</table> -</form> the</body> the2.servlet Layer
(1) Cartitemservlet.java
1 /**2 * Load multiple Cartitem3 * @paramreq4 * @paramresp5 * @return6 * @throwsservletexception7 * @throwsIOException8 */9 PublicString Loadcartitems (httpservletrequest req, HttpServletResponse resp)Ten throwsservletexception, IOException { One //1. Get the Cartitemids parameter AString ids = Req.getparameter ("Cartitemids"); - DoubleTotal = double.parsedouble (Req.getparameter ("Total")); - //2. Get list<cartitem> through the service thelist<cartitem> items =Service.loadcartitems (IDS); - //3. Save, then forward to/cart/showitem.jsp -Req.setattribute ("Items", items); -Req.setattribute ("Total", total); +Req.setattribute ("Cartitemids", IDS); - return"F:/jsps/cart/showitem.jsp"; + A}3.service Layer
(1) Cartitemservice.java
1 /**2 * Load multiple Cartitem3 * @paramIDs4 * @return5 */6 PublicList<cartitem>Loadcartitems (String IDs) {7 Try {8 returnDao.loadcartitems (IDS);9}Catch(SQLException e) {Ten Throw NewRuntimeException (e); One } A}4.dao Layer
(1) Cartitemdao.java
1 /**2 * Load multiple Cartitem3 * @paramIDs4 * @return5 * @throwsSQLException6 */7 PublicList<cartitem> Loadcartitems (String IDs)throwsSQLException {8String [] Idsarray = Ids.split (",");9String sql = "SELECT * from T_cartitem C, T_book b where c.bid=b.bid and cartitemid in" +Towheresql (idsarray.length);Tenlist<map<string,object>> maplist = qr.query (sql,NewMaplisthandler (), idsarray); One returntocartitemlist (maplist); A}Web Book Mall Project study notes-017 Checkout, jump checkout page
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