gwc.txt

网上购书,可以实现网上购书,界面漂亮,代码易懂

商品编码:shopID
商品数量:shopNumber


public void shopcar(int shopId,int shopNumber,HttpSession httpsession)
{
     HttpSession session=httpsession;
     String s=""
     if(session.getAttribute("shopcar")!=null)
     {
        s=session.getAttribute("shopcar");
                
      }
     s+=","+shopid+":"+shopNumber;
     session.setAttribute("shopcar",s);

}

读的时候用
String s=session.getAttribute("shopcar");
s.splip (","); //分割商品
s.splip (":");//分割商品id /商品数量