📄 buyebook.jsp
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<?xml version="1.0" encoding="UTF-8" ?><%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@page import="java.util.*" %>
<%@page import="shop.*" %>
<%@page import="javax.servlet.http.HttpSession" %>
<%@page import="java.sql.*"%>
<% boolean login=false;
request.setCharacterEncoding("UTF-8");
HttpSession usersession = request.getSession(true);
String bookid=request.getParameter("bid");
String type=request.getParameter("type");
String[] bookids=new String[50];
for(int temp=0;temp<50;temp++){
bookids[temp]="0";
}
if(usersession.getAttribute("islogin")==null){
}else {
if(((Boolean)usersession.getAttribute("islogin"))==true){
login=true;
if(type.equals("1")){
if(usersession.getAttribute("buyebook")!=null){
String bbooks[]=(String[])usersession.getAttribute("buyebook");
int i=0;
while(!(bbooks[i].equals("0"))){
i++;
}
bbooks[i]=bookid;
usersession.setAttribute("buyebook",bbooks);
bookids=bbooks;
}else{
bookids[0]=bookid;
usersession.setAttribute("buyebook",bookids);
}
}
if(type.equals("-1")){
int temp2=49;
int temp;
String bbooks[]=(String[])usersession.getAttribute("buyebook");
for(temp=0;temp<49;){
if(bbooks[temp].equals(bookid)){
bbooks[temp]="0";
temp2=temp;
break;
}
temp++;
}
out.println(temp2);
for(temp=temp2;temp<49-temp2;){
bbooks[temp]=bbooks[temp+1];
temp++;
}
usersession.setAttribute("buyebook",bbooks);
bookids=bbooks;
}
if(type.equals("0")){
if(usersession.getAttribute("buyebook")!=null){
bookids=(String[])usersession.getAttribute("buyebook");
}
}
}
}
%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="web2.css" />
<title>娆㈣繋鏉ュ埌缃戜笂涔﹀煄</title></head><body>
<%if(login==true){%><div id="wrap">
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