标签：style blog color java os io for ar
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<html>
<body>
<%
ArrayList books = new ArrayList();
books.add("三国演义");
books.add("西游记");
books.add("水浒传");
//将books放进session 名字为book
session.setAttribute("book",books);
%>
<a href=MyJsp2.jsp>查看购物车</a>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<html>
<body>
购物车内容为：
<hr>
<%
//从session中取出名为book的 放入数组中
ArrayList books = (ArrayList)session.getAttribute("book");
for(int i = 0;i<books.size();i++)
{
String book = (String)books.get(i);
out.println(book + "<BR>");
}
%>
</body>
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%>
<html>
<body>
<form action = "MyJsp3.jsp" method = "post">
请你输入书本：<input name ="book", type = "text">
<input type = "submit" value = " 添加到购物车">
</form>
<hr>
<%
//取出名为books的
ArrayList book = (ArrayList)session.getAttribute("books");
if(book==null) //如果没有 也就是第一次
{
out.print("wzz");
book = new ArrayList();
session.setAttribute("books",book);
}
String book1 = request.getParameter("book");
if(book1!=null)
{
book1 = new String(book1.getBytes("ISO-8859-1"));
book.add(book1);
}
%>
购物车里的内容：<br>
<%
for(int i =0;i<book.size();i++)
{
//从数组里取出
out.println(book.get(i)+"<BR>");
}
%>
</body>
</html>
标签：style blog color java os io for ar
原文地址：http://www.cnblogs.com/wzz1020/p/3899584.html
