web實(shí)驗(yàn)簡(jiǎn)單購(gòu)物車的實(shí)現(xiàn)

1、web實(shí)驗(yàn)簡(jiǎn)單購(gòu)物車的實(shí)現(xiàn)實(shí)驗(yàn)三簡(jiǎn)單購(gòu)物車的實(shí)現(xiàn)實(shí)驗(yàn)?zāi)康模海?）進(jìn)一步掌握jsp的基本語(yǔ)法。（2）熟悉JSP相關(guān)指令元素和動(dòng)作元素。實(shí)驗(yàn)內(nèi)容：編寫JSP程序的實(shí)現(xiàn)購(gòu)物車的基本功能，即想購(gòu)物車中添加商品，并給出購(gòu)物車中的商品信息和總金額。實(shí)驗(yàn)步驟：新建一個(gè)名為Cart。Html的html文件，在其中輸入下面的代碼：請(qǐng)選擇您要購(gòu)買的書(shū)籍： Book_5 購(gòu)買數(shù)量：界面運(yùn)行如下：在編寫一個(gè)ShowCartInf。JSP的頁(yè)面代碼如下：String bookName=request.getParameter(BName);String bookNumber = request.getParameter

2、(BNumber);if(bookName!=null&bookName!=)int nbookNumber=Integer.parseInt(bookNumber);Cart.add(bookName,nbookNumber);Hashtable h=Cart.ShowCartInf();Enumeration e=h.keys();sum=Cart.getSum();%書(shū)籍名稱數(shù)量（本）while(e.hasMoreElements()String name=e.nextElement().toString();int number=(Integer)h.get(name).intValu

3、e();%onclick=javascript:window.location=Delete.jsp? Bname=%總價(jià)格:onclick=javascript:window.location=Cart.htm.htmlCart。Java程序代碼：package Cart;import java.io.Serializable;import java.util.*;import java.io.*;public class Cart implements Serializablefloat Sum=0;Hashtablepublic void cart()public float getPr

4、ice(String goodsname)if(goodsname.equals(Book_1)return new Float(59.0);else if(goodsname.equals(Book_2)return new Float(37.0);else if(goodsname.equals(Book_3)return new Float(49.0);else if(goodsname.equals(Book_4)return new Float(27.0);else if(goodsname.equals(Book_5)return new Float(32.0);else if(g

5、oodsname.equals(Book_6)return new Float(28.0);elsereturn new Float(0);public void add(String GoodsName,int GoodsNumber)if(Goods.containsKey(GoodsName)int Num=(Integer)Goods.get(GoodsName).intValue();Num=Num+GoodsNumber;Goods.put(GoodsName,new Integer(Num);Sum=Sum+getPrice(GoodsName)*GoodsNumber;else

6、Goods.put(GoodsName,new Integer(GoodsNumber);Sum=Sum+getPrice(GoodsName)*GoodsNumber;public Hashtable ShowCartInf()return Goods;public void delete(String GoodsName)int GoodsNum=(Integer)Goods.get(GoodsName).intValue();Sum=Sum-getPrice(GoodsName)*GoodsNum;Goods.remove(GoodsName);public float getSum()return Sum;運(yùn)行如下：點(diǎn)繼續(xù)購(gòu)物：點(diǎn)擊“提交”：實(shí)驗(yàn)總結(jié)通過(guò)本次試驗(yàn)，我基本了解了JSP的基本語(yǔ)法；并運(yùn)用Tomcat 服務(wù)器調(diào)試JSP程序