?? cartservlet.java
字號:
package Controler;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import Entity.GoodsBean;
public class CartServlet extends HttpServlet {
public CartServlet() {
super();
}
public void destroy() {
super.destroy();
}
public void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String gid=request.getParameter("gid");
String gname=request.getParameter("gname");
String gprice=request.getParameter("gprice");
String gimage=request.getParameter("gimage");
int id=0;
GoodsBean bean=new GoodsBean();
if(gid!=null&&gname!=null&&gprice!=null)
{
id=Integer.parseInt(gid);
gname= new String(gname.getBytes("iso8859-1"),"GBK");
bean.setGid(id);
bean.setGname(gname);
bean.setGprice(Float.parseFloat(gprice));
bean.setGimage(gimage);
}
//判斷購物車是否已經存在
HashMap hash=null;
if(request.getSession().getAttribute("cart")==null)
{
System.out.print("1111111111111session="+gname);
hash=new HashMap();
}
else
{
System.out.print("22222222222222session");
hash=(HashMap)request.getSession().getAttribute("cart");
System.out.print("hashmap+size()="+hash.size()+"ddddddddddddddddd");
}
//判斷該商品在購物車中是否已經存在來設置商品的數量
if(hash.containsKey(id+""))
{
bean=(GoodsBean)hash.get(id+"");
bean.setNumber(bean.getNumber()+1);
System.out.print("have a goods");
}
else
{
bean.setNumber(1);
}
hash.put(id+"", bean);
request.getSession().setAttribute("cart", hash);
if(request.getParameter("do")!=null)
response.sendRedirect("/Project_Food/ShowFoodDetail.jsp?product_id="+gid+"&product_name="+gname+"&product_price="+gprice+"&product_iamge="+gimage);
else
response.sendRedirect("/Project_Food/Index.jsp");
}
public void init() throws ServletException {
// Put your code here
}
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -