注意： ]xApw?{
1、重新计费部分还没有做好，大家自己动手吧！ LVy}4 't
VZ+7e^ Bs //shop_cart.jsp
zfy&K> = r>(?@)gfU <%@ page contentType="text/html;charset=gb2312"%>
~c ,o+Q^>! <%@ page session="true" %>
yp%3l<CD$/ <%@ page language="java" import="java.sql.*" %>
bTp"K& <jsp:useBean id="bka" scope="page" class="shop.bka" />
9$>On^M[y <%
) ylAdb k?@7L q>1 String product_type;
0 9 l0;# String action;
oG6Q K5 int product_id;
F&Y"`Jxi int curpage;
v] Sk>, WYu1 n P //商品类型
B2
+IHX+ if (request.getParameter("product_type")==null){
MiL ] product_type="all";
ZC,PH! }else{
XP<6q!H^L product_type=request.getParameter("product_type");
rw_r>E9] }
cNE!yg~, d c49-XR //页数和商品类型参数，可以在“继续购物”时返回到上次购物的页面
2v/Ny *&n6 if (request.getParameter("curpage")==null){
np#" v_ curpage=1;
R4 L+ R
_m }else{
2en-#6 U! curpage=java.lang.Integer.parseInt(request.getParameter("curpage"));
nm!oKw( }
(1PFNC&I; `x4/yR- //动作
RL3p:h if (request.getParameter("action")==null){
2reSZJjl action="view";
efWWC8jdi }else{
x:65;j ?D action=request.getParameter("action");
.p73;thn }
X3L8tj,X H {{VJUA8e //商品编号
+Ru#mu9\U\ if (request.getParameter("product_id")==null){
mU>@[$1w product_id=0;
J_Nf& }else{
Vqq<!2me product_id=java.lang.Integer.parseInt(request.getParameter("product_id"));
m3L.fkZ D }
9+YO%G5 ]/V; 7 int bbb;
\Qd>.%B bbb=1;
%I'q[* S X)w\G5p3\ Integer num = new Integer(bbb);
ew8w{l\_N; bT f0T //商店编号
t0Z /p session.putValue("shop_id",num);
s*&e]x\ //顾客username
RLPPB(L session.putValue("guest_name","asp2001");
W=.?9 be R3 76y KX String guest_name=(String)session.getValue("guest_name");
Pi *F>y Integer shop_id=(Integer)session.getValue("shop_id");
peqUJi]d:
Mc* 1
R Ks(4p[/8E| {wI|p#q! java.lang.String sql;
9"fP9vz java.sql.ResultSet rs;
> m\IO_lnq :S2B>WW0K 8*8B=4 I I @,*|Cco if (action.compareTo("add")==0) {
?
z%|O. ]Cc|
V sql="select cart_quantity from shop_cart where cart_shop_id=" + shop_id + " and cart_guest_id=''" + guest_name + "'' and cart_product_id=" + product_id ;
5JGiS e rs = bka.executeQuery(sql);
Q18~O )h:+ if (rs.next()){
A86go.pS int cart_quantity;
d3+1 _ KD cart_quantity=java.lang.Integer.parseInt(rs.getString("cart_quantity"))+1;
o?}knB&T| sql="update shop_cart set cart_quantity=" + cart_quantity + " where cart_shop_id=" + shop_id + " and cart_guest_id=''" + guest_name + "'' and cart_product_id=" + product_id ;
f j?,Qa rs = bka.executeQuery(sql);}
eAa4b E else
d2k%A {
c#\P7sJ?j sql="insert into shop_cart (cart_shop_id,cart_guest_id,cart_product_id,cart_quantity) values (''" + shop_id + "'',''" + guest_name + "'',''" + product_id + "'',1)";
0`7su&Ps rs = bka.executeQuery(sql);
R"(-Xxr }
tB:_8zP8 }
droapO' 4T + SLN if (action.compareTo("clear")==0) {
SBmANG&&} sql="delete from shop_cart where cart_shop_id=" + shop_id + " and cart_guest_id=''" + guest_name + "''";
jNbSe1oR rs = bka.executeQuery(sql);
S G65pPN }
*F .3\}: m37*kFP if (action.compareTo("delete")==0) {
q0VgL zn sql="delete from shop_cart where cart_shop_id=" + shop_id + " and cart_guest_id=''" + guest_name + "'' and cart_product_id=" + product_id ;
&_$_jU0s rs = bka.executeQuery(sql);
+1cdF }
M'eC /lCxq %>
?L- A,S| <div align="center"><center>
Q`{OKt+ ! %p g3z1| <table border="0" cellpadding="0" cellspacing="0" width="610"
Cdr s
7 .!& @W height="2">
\ MTkit <tr>
[T { D4 | <td><form method="POST"
.Q5 vn[X E''? action="shop_cart.jsp?action=update&product_type=<%=product_type%>&curp
:>ErR a
kA.yNL age=<%=curpage%>">
vwHjb=29< <table border="0" cellpadding="0" cellspacing="0" width="610"
rYFNPy`T Ck6u* height="2">
o
de \pb8 <tr>
3Nv?>{ <td width="122" height="7"><div align="center"><center><table
F/`N:bJY 2{O;MRU;.e border="1" cellpadding="2" cellspacing="0" width="100%" bordercolorlight="#FFB468"
`X"hxhj&-d Ej%{4-ot bordercolordark="#FFFFFF" bgcolor="#FFB468">
w\FsJ^G <tr>
+ia:rqp <td width="100%"><div
q G rm? `pI{pme8v align="center"><center><p>购物车</td>
@>o4 ^Pb </tr>
UJW'@"}3 </table>
G#UPfm }tU </center></div></td>
03 o k/UC <td width="122" height="7" style="border: medium"
P L.0
+ 6^.oA%4f align="center"><div align="center"><center><table
In"v(KI8v border="1" cellpadding="2" cellspacing="0" width="100%"
7kUZ
-ly*~" bordercolorlight="#FFB468"
3 -]w,R` bordercolordark="#FFFFFF" bgcolor="#FFB468">
F{f'v1@)x <tr>
=O`,hG^ <td width="100%"><div align="center"><center><p><a
*,X6 @?f70 B href="shop_list.jsp?shop_id=<%=shop_id%>&product_type=<%=product_type%>
TR@ :PA gS{
4Ja8 &curpage=<%=curpage%>">继续购物</a></td>
>@'^{ </tr>
x j AWCD$ </table>
*57!r ' </center></div></td>
y]
v4uT <td width="122" height="7" style="border: medium"
JMG.`}I@M 5:F
mD)b align="center"><div align="center"><center><table
3zX<UP T border="1" cellpadding="2" cellspacing="0" width="100%"
(U8VXxvl 6k5Rg bordercolorlight="#FFB468"
r2C% bordercolordark="#FFFFFF" bgcolor="#FFB468">
kn5 Bk0i
<tr>
l. MQ-_*D~ <td width="100%"><div align="center"><center><p><a
m& c5NG o*:Ak+P . href="javascript: document.forms[0].submit()">重新计费</a></td>
:P%n~Fr, </tr>
GoSK1#]g>3 </table>
/-{27\;H? </center></div></td>
oi{gezdGNS <td width="122" height="7" style="border: medium"
>9O0UpC. |V{<MxX align="center"><div align="center"><center><table
S8BBKgq]K border="1" cellpadding="2" cellspacing="0" width="100%"
*cT4-7R,3 EE0kJ$; bordercolorlight="#FFB468"
<U6JI\ [ bordercolordark="#FFFFFF" bgcolor="#FFB468">
5J<2BU D <tr>
`r>)=h <td width="100%"><div align="center"><center><p><a href="shop_cart.jsp?action=clear&product_type=<%=product_type%>&curpage=<%=curpage%>">清空购物车</a></td>
UJ2?W'*sx </tr>
Fd^ls(2 </table>
iye'"o V </center></div></td>
bT QX8 $zb <td width="122" height="7" style="border: medium" align="center"><div align="center"><center><table
m@2 /]h border="1" cellpadding="2" cellspacing="0" width="100%" bordercolorlight="#FFB468"
.K|rqk+t bordercolordark="#FFFFFF" bgcolor="#FFB468">
zO=}TQee <tr>
L%A)T_+T <td width="100%"><div align="center"><center><p><a href="shop_order.asp">确认购买</a></td>
&.?gZ{fk </tr>
AqnYb\{, </table>
U1 j'A,t </center></div></td>
Z 1
X-w`6 </tr>
*0dbny(#R <tr align="center">
<uR SZ?h3 <td width="610" height="1" colspan="5"><div align="center"><center>
0>y%#v:N <table border="1" cellpadding="2" cellspacing="0" width="100%" bgcolor="#FDFEE2" bordercolorlight="#FFB468" bordercolordark="#FFFFFF" height="40">
lP@rOANk <tr>
yl GQ`){p <td width="20%" height="8" align="left">商品名称</td>
]79\`K ` <td width="10%" height="8" align="left">市场价</td>
[W\ ht5 <td width="10%" height="8" align="left">优惠价</td>
~4}QH G <td width="10%" height="8" align="left">数量</td>
Qy)M
K7#2 <td width="14%" height="8" align="left">小计</td>
Yr(HdQ
<td width="12%" height="8" align="left">定金比例</td>
3e^f%(=OI <td width="17%" height="8" align="left">定金小计</td>
JmI*Ni`@ <td width="17%" height="8" align="left">删除</td>
V} 0!I
</tr>
+X(k qD"H <%
k?BD
.L!- sql="select shop_product.product_id,shop_product.product_name,shop_product.product_price,shop_product.product_discount,shop_cart.cart_quantity,shop_product.product_first from shop_cart,shop_product where shop_cart.cart_shop_id=" + shop_id + " and shop_cart.cart_guest_id=''" + guest_name + "'' and shop_cart.cart_product_id=shop_product.product_id";
C!f u$ rs = bka.executeQuery(sql);
pynWW\_F int total;
g eRM &d int total_first;
). LbsK^s total=0;
4zcp
VQ@Ik total_first=0;
B]I\B=i
6 String product_name;
ET*/!d>Y#j int product_price;
1S+?>yt^r int product_discount;
}0_eT^cH int product_first;
?,$2F int cart_quantity;
?6xC tG+ 6f<vntLZ if (rs.next()){
:3wI?fx68 while (rs.next()) {
D-v8q#q7 product_id=java.lang.Integer.parseInt(rs.getString(1));
# U9o}. product_name=rs.getString(2);
4;Z- product_price=java.lang.Integer.parseInt(rs.getString(3));
3d }{-s product_discount=java.lang.Integer.parseInt(rs.getString(4));
C_
nk3
cart_quantity=java.lang.Integer.parseInt(rs.getString(5));
+qrMFg|n} product_first=java.lang.Integer.parseInt(rs.getString(6));
PNY)p<A' %>
ub&
yp ITb6/zgun <tr>
H{a(g<ew <td width="10%" height="1" align="left"><%=product_name%></td>
"A+#?2+^ <td width="10%" height="1" align="left"><%=product_price%></td>
w&$P"a9t <td width="10%" height="1" align="left"><%=product_discount%></td>
8c..WHC!Z <td width="10%" height="1" align="left"><input type="text" name="<%= "t" + product_id %>" size="3" value="<%=cart_quantity%>"></td>
[[>7FRz <td width="14%" height="1" align="left"><%=product_discount*cart_quantity%></td>
vpou@
hs <td width="12%" height="1" align="left"><%=product_first + "%"%></td>
l $ SE <td width="17%" height="1" align="left"><%=product_first*product_discount*cart_quantity/100.0%></td>
VQ/FYKDg <td width="17%" height="1"><div align="center"><center><p><a href="shop_cart.jsp?action=delete&product_id=<%=product_id%>">delete</a></td>
%Zoe*@ t </tr>
m|. Q 7Oz *' }ospp <%
j
_*haD total=total+product_discount*cart_quantity;
ly8Tv$eM total_first=total_first+product_discount*cart_quantity*product_first/100;
<' h2mTH/ }
m(sq,y9b %>
c5RmiL7J t3\ Wn\y( <tr align="center">
)U_L+ c_e <td width="72%" colspan="6" height="16"><div align="right"><p>总计</td>
O3w|WnKO <td width="36%" colspan="2" height="16"><div align="left"><%=total%></td>
w#nYj]@?a </tr>
!@|RV?l <tr align="center">
bD/<t1$NR <td width="72%" colspan="6" height="16"><div align="right"><p>定金总计</td>
SGi+:b.n <td width="36%" colspan="2" height="16"><div align="left"><%=total_first%></td>
Y$7f[d+ </tr>
) ;^ &| <tr align="center">
< m
CQq=" <td width="72%" colspan="6" height="16"><div align="right"><p>结余</td>
0r|*G
F ba <td width="36%" colspan="2" height="16"><div align="left"><%=total-total_first%></td>
/=_~4"atz </tr>
@ 5<$Zoi </table>
CV) - uN </center></div>
./>>n,/:Z 5"Ka ppk5 <%
KRBS"^iy }else{
w#wzHOq3d %>
F?'#2um! <p align="center">购物车为空!</p>
<;DQ [ <%
n~f`BW>7w }
z:vcF>1 %>
igxoa>c0 H'H"G%| 'y0dhDR
+zy 数据库操作部分
gF%D9l;U}+ XxJLMK
_H 程序用到两个表：
l&} jeNW$ 1 shop_cart表
#I}o\un/ cart_id int 购物车编号 自动编号
X,{_% e cart_shop_id nvarchar 商店编号
|X4y cQ cart_product_id nvarchar 商品编号
g@,{TDNK cart_quantity int 商品数量
YlaAg(ws 临时存放购物车数据
-HIyLSDu
"JxG$rMtq 2 shop_product表
x"\7 ?ib` product_id int 商品编号 自动编号
53?}*b<dQ+ shop_id nvarchar 商店编号
%+tF$&cC product_name nvarchar 商品名称
'X*VEFy product_bb nvarchar 商品介绍
cQYpm\k&p product_price int 市场价
% Ej$JC9\ product_discount int 优惠价
Dv,@ClJ product_img img 图片
Q9F=XMag Q product_status nvarchar 状态
&^I2KgV9 product_first int 定金比例
shPtK]c2h product_type nvanchar 商品类型
ifuO5 存放商品资料
; %l' Y! e%lYw 使用bka.java制成的javabean：bka.class可以提供对数据库的操作。
/OLTT|Ep& ZE^58AX 另外，需在控制面板的系统DSN中注册bka.dsn，
Y]{0&|\ 从而可使JSP通过JDBC-ODBC来调用sql数据库。
8m2q} lV 在页面中调用javabean，基本上可采用以下方式：
(XtU 2LtGE O|$Nd0 :7=,2d;X- <%@ page language="java" import="java.sql.*" %>
w! sJ671? <jsp:useBean id="RegisterBean" scope="page" class="shop.bka" />
/`; ?1q
C <%
|_tA *#l String sql="select * from xxx";
D_j\>w ResultSet rs = RegisterBean.executeQuery(sql);
>##E9[@p if(rs.next()) {
WXIJ~qBiz1 rs.close();
7E
}?& e RegisterBean.closeStmt();
[ '3Z1^L : session.putValue("register_message","duplicate name found!");
0mfM?*`T* }
@U#JN 8 @ %>
sk*o/#w. 注意应在使用后将rs关闭。
Fc}SY7 -D\ U9u|O_ !u:.
x3 以下是bka.java的源程序。注意在使用前需用javac加以编译成为class文件即javabean.
bYD/_%|f@ @ ^4e=I --shop/bka.java--
C`hu:q\
nJ 4%? Z<9 ? :6(D {-o package shop;
'
u 8n,qV| import java.sql.*;
IVG$8CB GZu+ i<v public class bka {
S@eCGwW
String sDBDriver = "sun.jdbc.odbc.JdbcOdbcDriver";
sRLb&={R` String sConnStr = "jdbc:odbc:bka";
f6C`tr, Connection conn = null;
"\lZT! ResultSet rs = null;
6JT.!1T!hI m njV?2` public bka() {
ks8@pd3}B try {
*R8iN5^3 Class.forName(sDBDriver);
J|f Q:.+ }
g3$<|B
enC catch(java.lang.ClassNotFoundException e) {
x_U`PP*E System.err.println("bka(): " + e.getMessage());
} o;&yO }
...4o2[[Mc }
c?DNVF@5 N -uEZ,w public ResultSet executeQuery(String sql) {
`:S )p rs = null;
WUY
WSp try {
2BZ] =3(Oj conn = DriverManager.getConnection(sConnStr,"xxx","yyy");
3DfdC5J Statement stmt = conn.createStatement();
N@0;#2^I rs = stmt.executeQuery(sql);
=mvo58n% }
N&wbn3+Jd catch(SQLException ex) {
xCcJ"Gm#2 System.err.println("aq.executeQuery: " + ex.getMessage());
vEXm
.ZT }
;YVy/B<U; return rs;
!b7s6_F }
VCMV?\+- }
习惯两个人
Posted:2007-01-27 02:23 |
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