package com.gao.action;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpSession;
import org.apache.struts2.ServletActionContext;
import com.gao.entity.Goods;
import com.gao.entity.Shop;
import com.gao.service.GoodsService;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class ShowGoodsAction extends ActionSupport
{
private static final long serialVersionUID = -8945761695779296093L;
private GoodsService goodService;
public GoodsService getGoodService()
{
return goodService;
}
public void setGoodService(GoodsService goodService)
{
this.goodService = goodService;
}
public String shopcaradd()
{
String strid = ServletActionContext.getRequest().getParameter("id");
String sname = ServletActionContext.getRequest().getParameter("sname");
String spic = ServletActionContext.getRequest().getParameter("pic");
String strsum = ServletActionContext.getRequest().getParameter("sum");
String strprice = ServletActionContext.getRequest().getParameter(
"price");
int id = Integer.parseInt(strid);
int sum = Integer.parseInt(strsum);
double price = Double.parseDouble(strprice) * sum;
Shop shop = new Shop();
shop.setShopid(id);
shop.setShopname(sname);
shop.setPicture(spic);
shop.setSum(sum);
shop.setPrice(price);
HttpSession session = ServletActionContext.getRequest().getSession();
/* Session session1 = (Session) ActionContext.getContext().getSession(); */
List<Shop> slist = (List<Shop>) session.getAttribute("slist");
if (slist == null)
{
slist = new ArrayList<>();
slist.add(shop);
session.setAttribute("slist", slist);
return SUCCESS;
} else
{
//此处的 作用相当于做一个简单的标记，方便下面的逻辑处理。
boolean f = false;
for (int i = 0; i < slist.size(); i++)
{
if (slist.get(i).getShopid() == id)
{
slist.get(i).setSum(slist.get(i).getSum() + sum);
slist.get(i).setPrice(slist.get(i).getPrice() + price);
f = true;
break;
}
}
if (f == true)
{
session.setAttribute("slist", slist);
return SUCCESS;
} else
{
slist.add(shop);
session.setAttribute("slist", slist);
return SUCCESS;
}
}
}
}
shop类：（存放获取的数据）
package com.gao.entity;
public class Shop
{
private Integer shopid;
private String shopname;
private String picture;
private Integer sum;
private Double price;
}